COMPONENTS
* 25 W Load
The model 25-CT-FA 25 W conduction cooled load is designed for volume production applications. It is a compact, 50 Ω load with a frequency range and SWR of DC to 1 GHz and 1.15 (max) and 1 to 3 GHz at 1.25 (max). SMA female or male connectors are standard but customer specific semi-rigid or flexible cable connections are also available. The 25-CT-FA has no magnetic materials or plating and is available with AlN as an option to BeO ceramic. Price: $70 (1 to 10). Delivery: two to four weeks.
Bird Component Products (BCP),
Largo, FL (727) 547-8826.
Circle No. 216
* Double Bandpass Filter
The model 16DBCVSP-2317/2348/C4.5-N cross coupled double bandpass filter uses "Super Q" Perovskite dielectric resonators, which yields a typical passband loss of 1.0 dB with a percent bandwidth of 0.19 along with a 30 dB shape factor of 1.33. In addition to the extremely low loss, the unit can withstand 200 W power handling.
ComNav Engineering,
Portland, ME (207) 797-4588.
Circle No. 217
* Fifth Order Filter
The models MAX7418 to MAX7425 fifth order, switched-capacitor, lowpass filters operate from a single supply of +5 V (MAX7422 to MAX7425) or +3 V (MAX7418 to MAX7421). These Bessel, Butterworth and elliptic filters support corner frequencies as high as 40 kHz while consuming only 2.5 mA, and are clock tunable for 1 Hz to 40 kHz with a clock-to-corner ratio of 100. When in shutdown quiescent current drop to 0.2 µA. Self-clocking or external clocking for tighter cutoff-frequency control is available. The low output offset (±4 mV) may be adjusted via an offset-adjust pin. Price: starts at $1.98 (1000+).
Maxim Integrated Products,
Sunnvale, CA (800) 998-8800.
Circle No. 221
* Miniature Electromechanical Switches
The MSM1 line of ultra-small, connectorized single pole, single throw mechanical switches have a frequency range from DC to 2 GHz, making them ideal for many wired and wireless RF communications applications. The switches are capable of being hermetically sealed, making them a reliable and stable solution for specific industrial markets with applications in cable TV, high density matrices, aerospace, medical and instrumentation. The series provides a low cost alternative to bulkier switches, while integrating some of the characteristics such as fail-safety found in mechanical switches, with high repeatability rates and speed found in solid state switches. Size: 0.83" * 0.37".
Micronetics Wireless Inc.,
Hudon, NH (603) 883-2900 ext. 311.
Circle No. 223
* Low Priced Coaxial Loads
The model 462-1F3 SMA-male coaxial termination is ideally suited for low power applications dissipating 1 W average power (250 W peak) with SWR of 1.05 (typ) to 3 GHz. The model 401-1F3 is an N-male coaxial termination providing high value and outstanding specifications while dissipating 2 W average power (1 kW peak) with SWR of 1.05 (typ) to 3 GHz. Both terminations feature brass housings and connectors, gold plated contact pins, and virgin electrical grade Teflon® insulation within the connectors.
MECA Electronics Inc.,
Denville, NJ (973) 625-0661.
Circle No. 222
* Low Profile Directional Coupler
The model ADC-6-10-75 wideband directional coupler is designed for 75 Ω CATV applica tions in the 20 to 1000 MHz frequency range. Designed with an ultra-low 0.108" profile, these couplers free engineers from the expensive task of compensating by providing a nominal 6.6 ±0.5 dB coupling value and good ±0.5 dB (max) coupling flatness. Midband, mainline loss is low at 2.1 dB (typ) and typical directivity is 15 dB. Price: $6.95 (10 to 49).
Mini-Circuits,
Brooklyn, NY (718) 934-4500.
Circle No. 224
* DC-6 GHz Microminiature Connectors
These microminiature MMCX connectors conform to CECC 22340 standard interface specification to insure performance and intermateability. This series of connectors is designed for high density packages requiring good RF performance. Engineers have a choice of PCB mounting technology, surface, edge mount or through hole, and tape-and-reel packaging for high volume pick and place board manufacturing. Straight and right angle plugs designed for miniature flexible and semi rigid coaxial cable completes the interface packages. MMCX connectors are designed to function in applications operating to 6 GHz and maintain low leakage by the use of an outer conductor that is not slotted. Mechanical stability is maintained by a snap fit interface. The impedance is 50 Ω, voltage rating is 170 V RMS and insulation resistance is 1000 mΩ. Typical applications include wireless/PCS devices, telecommunications, GPS receivers and consumer electronics.
Molex, RF/Microwave Division, Mooresville, IN (877) 665-3973 or (317) 834-5600.
Circle No. 225
* UMTS Band Diplexer
The model SL-8028 UMTS band diplexer for 3G applications operates over the 1920 to 1980 and 2110 to 2170 MHz frequency bands with loss of < 1.0 dB. Return loss is 16 dB (min) in the passband. The passband-to-passband isolation will hold up to 3 GHz. Power handling is 60 W CW with an operating temperature of 40° to +85°C. Size: 1.25" x 3.50" x 7.00".
Reactel Inc.,
Gaithersburg, MD (301) 519-3660.
Circle No. 226
* Relay Series
This design enhanced, surface-mount technology, coaxial RF 1P1T RSS relay series provides a low cost option in the DC to 4.0 GHz frequency band. This SMT device is available with 50 Ω impedance and failsafe to open actuation with standard operating voltages of 12, 24 and 28 V DC. These relays are intended for high volume, high power, high performance commercial wireless and industrial applications requiring small size with typical insertion loss of 0.07 dB at 900 MHz and 0.12 dB at 1900 MHz. Typical power handling of the series is 175 W at 900 MHz and 100 W at 1900 MHz, while typical isolation is 85 dB at 900 MHz and 90 dB at 1900 MHz. Size: 1.0" * 0.5" * 1.0".
RelComm Technologies Inc.,
Salisbury, MD (410) 749-4488.
Circle No. 227
* Phase Shifter for Clock and Data Recovery
The model 6705K OC 48 & OC 192 protocol electromechanical phase shifter operates over the DC to 26.5 GHz range and offers phase adjustment of 40° per GHz. SWR is 1.6 (max) and insertion loss is 1.25 dB (max). Available options include a turns counter, shaft lock or slotted shaft. Type K connectors are standard, but alternate connector or pin requirements can be requested. Typical applications include phase adjustment in clock and data recovery segments of optical networking architectures.
Sage Laboratories Inc.,
Natick, MA (508) 653-0844.
Circle No. 228
* Blindmate Connector
The BMA series of blindmate connectors are qualified to MIL-PRF-31031 with the interface in accordance with MIL-STD-348. The connectors offer the advantage of push-on mating while providing superior microwave performance. The connectors provide for miniaturization through modular design by eliminating cumbersome cable assemblies. Configurations include hermetic versions and adapters, fixed and floating versions, low profile styles, high power versions, stripline and microstrip launchers and terminations.
SV Microwave Inc.,
West Palm Beach, FL
(561) 840-1800.
Circle No. 229
* UHF Male Crimp Connector
The model EZ-400-UM non-solder EZ install Type-UHF male connector is in response to demand for a non-solder PL-259 UHF connector for LMR-400 flexible low loss coaxial cable. The connector eliminates the need to solder the center conductor and braid which can cause overheating and melting of the cable dielectric. The center conductor slides into a silver-plated spring finger contact pin and the outer braid is attached with a crimp-style attachment ring using standard 0.429" hex dies. It is easier and faster to install and is much more reliable than the solder-on PL-259. EZ style connectors are available for most LMR® cable sizes and include UHF, N, 7-16DIN, TNC and reverse polarity TNC interfaces. LMR cables are flexible, non-kinking low loss 50 Ω RF transmission line cables that utilize easy-to-install connectors.
Times Microwave Systems,
Wallingford, CT (203) 949-8424.
Circle No. 231
* 7-16 Panel Receptacle
This 7-16 panel receptacle features a safety interlock switch that prevents people from touching a live high power, high current RF contact. The interlock switch panel receptacle only completes a circuit when the male center contact is fully seated and the plug is mated per DIN 47223 specifications. Providing a fail-safe way to prevent people from touching a live contact, the panel receptacle is defaulted to the off position and is less cumbersome than using safety covers and other devices. The receptacle operates on 4 to 24 V DC and is constructed with either gold or silver center conductors, beyllium-copper contacts, Teflon® insulators and brass bodies, either silver- or TruLustre™ (tri-metal) plated. Rated for
5000 W, it has a dielectric withstanding voltage of 4000 V RMS. Price: $89.
Tru-Connector Corp.,
Peabody, MA (800) 262-9878
or (978) 532-0775.
Circle No. 232
* LGA Connectors
The MicroConn® connection solution for land grid array (LGA) applications offers OEM de-signers a highly reliable and economical solderless interconnect for microprocessors, ASICs and other large packages. It is ideal for computer, server, workstation and test instrument applications. The design features a robust liquid crystal polymer (LCP) plastic matrix containing high density metal contacts (up to 1.0 mm contact spacing). The short contact length delivers low inductance at high frequencies, and a positive stop prevents overstressing of contacts. The result is a highly robust, low profile, flush mount connector with improved performance.
Teledyne Interconnect Devices,
San Diego, CA (800) 344-4334.
Circle No. 230
* Switch-isolator Integrated Assembly
The model 249D90900 iso-switch addresses insertion loss, weight and size limitation issues. This integrated assembly of an electromechanical RF switch and isolator performs a redundancy function in an LNA RF circuit. By combining the switch and isolator into one unit, RF parameters are improved over individual devices as well as saving weight and space. The switch component has a frequency range of DC to 26 GHz and the bandwidth is limited by the isolator and can be optimized for other frequency ranges. The isolation is 70 dB (min) with an input SWR of 1.2 (max) and insertion loss of 0.3 dB. Size: 58 * 58 * 58 cm. Weight: 114 g.
Dow-Key Microwave Corp.,
Ventura, CA (805) 650-0260.
Circle No. 243
AMPLIFIERS
* Power Amplifier
The model 30-1-200-45-R high performance 200 W RF power amplifier covers the 1 to 30 MHz frequency range with 45 dB of gain. Features include automatic current limiting, forced-air cooling, current meter, over-current and thermal protection. The amplifier is also available as a DC module in a small, high efficiency package. Weight: 35 lb. Size: 19" * 18" * 7".
LCF Enterprises,
Post Falls, ID (208) 457-0292.
Circle No. 234
* High Power Frequency Power Amplifier
The model AMF-8F-265325-80-29P high frequency power amplifier operates in the 26.5 to 32.5 GHz range. The unit features an output power of +30 dBm typical (+29 dBm min), 8.0 dB (typ) noise figure and 30 dB (min) gain. The amplifier is available with various electrical options and an assortment of connector combinations to satisfy every user.
Miteq Inc.,
Hauppauge, NY (631) 439-9447.
Circle No. 235
* SiGe HBT MMIC Amplifiers
The model SGL-0163 and model SGL-0263 silicon germanium (SiGe) HBT MMIC amplifiers offer very low noise, high input intercept point products aimed at applications in 2G/3G wireless infrastructure and fixed wireless applications. The SGL family is optimized for the 800 to 1000 MHz and 1900 to 2400 MHz communication bands. The SGL-0163 has a noise figure of 1.2 dB, +5 dBm input third-order intercept point and small signal gain of 16 dB. The SGL-0263 has a noise figure of 1.3 dB, +6 dBm input third-order intercept point and small signal gain of 15 dB. P1dB compressed output power can be improved 5 dB in both products by increasing the input voltage from 3 V to 4 V and current from 11 mA to 25 mA. Price: 50¢ for the SGL-0163 (10,000); 95¢ for the SGL-0263 (10,000).
Stanford Microdevices Inc.,
Sunnyvale, CA (800) 764-6642.
Circle No. 236
DEVICES
* Planar Doped Barrier Detectors
The model 603SK planar doped barrier detector operates over the entire frequency range of 10 MHz to 40 GHz. The unit is available with an input connector of 3.5 mm, 2.4 mm or K male. Frequency response is ±0.3 dB to 20 GHz, ±0.6 dB to 26.5 GHz and ±1.0 dB to 40 GHz. SWR is 1.3 (max) to 20 GHz, 1.4 to 26.5 GHz and 1.5 to 40 GHz. Low level sensitivity is 0.4 mV/µW (min) and video impedance is 0.8 to 3.0 kΩ. An application note is available which outlines detector risetime versus RF performance, and DC output voltage as a function of temperature from 60° to +100°C.
Krytar, Sunnyvale, CA (408) 734-5999.
Circle No. 241
* Low Capacitance Varactors
The model SMV1232-079, SM1263-079 and SMV1405-079 low capacitance silicon varactor diodes are designed for VCO designs in IMT-2000 (WCDMA/UMTS) applications. These varactors have low series resistance for low phase noise and low capacitance making them suitable for applications up to 2.5 GHz. They are manufactured in a small SC-79 package for reduced package parasitics, and are available in tape-and-reel for high volume, low cost applications. Price: 19¢ (250,000).
Alpha Industries,
Woburn, MA (781) 935-5150.
Circle No. 240
ANTENNA
* Millimeter-wave Scanning Antenna
This millimeter-wave scanning antenna is specifically configured for automotive radars. A scanning antenna is the crucial element that determines the overall performance of automotive radar systems. It is distinguished by fast scanning rates, narrow beamwidth, wide scanning range, high efficiency, lightweight, small size, high reliability, rugged construction and low cost to manufacture.
WaveBand Corp.,
Torrance, CA (310) 212-7808.
Circle No. 239
INTEGRATED CIRCUITS
* Integrated 300-950 MHz Double Superhet Receiver Chips
The model TH7107 through TH71082 chip family enables designers to match their RF transmitter system requirements by each application's frequency range, modulation scheme or output power requirements. The family has been specifically designed for worldwide RF applications in the unlicensed ISM and short-range devices (SRD) frequency bands. The single-channel transmitter devices cover the entire ISM and SRD frequency range of 300 to 950 MHz, and are divided into two groups in order to optimize performance over that bandwidth. Three lower frequency variants are available for applications at 300 to 480 MHz. The chip family is designed in a highly integrated 0.8 micron BiCMOS process. It has low current consumption of 5 to 13 mA, depending on variant and power setting, and a very low standby current of < 100 nA. The operating temperature is from 40° to +85°C and it has a wide supply voltage range of 2.0 to 5.5 V. The adjustable RF output power range is 18 to 3 dBm.
Melexis, Concord, NH (603) 223-2362.
Circle No. 244
MATERIAL
* SONET Semiconductor Packaging
This full line of synchronous optical network (SONET) semiconductor packaging ranges from OC-48, OC-192 solutions, to the research and development on the next generation OC-768. These ceramic, glass and metal-based packages are used in the fiberoptics market for packaging a variety of semiconductors used in broadband SONET topologies. The packages maintain the integrity and electrical properties of high frequency components while providing thermal management where necessary. The packages can either be purchased from a number of off the shelf designs or custom configured to a specific need. Assembly services to package the chips are available. Features of the packages include ceramic or glass RF layers, metal, glass or ceramic bases, leaded, leadless or surface-mount attachment.
StratEdge,
San Diego, CA (858) 569-5000.
Circle No. 245
PROCESSING EQUIPMENT
* Laser Drilling Machine
The LPKS MicroLineDrill 600 laser drilling machine can structure as well as drill HDI boards. This system offers a specially developed laser for drilling blind holes. The drilling only requires one single process step because the system works with one laser source only. It can also produce circuit board structures on a medium number of boards by removing the resist and copper layer. Another important advantage is that the metallization can be done immediately without previous cleaning. The machine offers high throughput, an excellent price-performance ratio and low consumption costs.
LPKF Laser & Electronics AG,
Garbsen, Germany
+49 (0) 5131 7095 0.
Circle No. 246
SOFTWARE
* Automated Modeling Program
ParICs automated modeling program for popular IC packaging types such as quad flat packs (QFPs), thin small outline packages (TSOPs), small outline integrated circuits (SOICs) and dual inline packages (DIPs) offers a unique mix of automation, design flexibility and ease of use. The ParICs tool has now been ported to run on Windows NT and has been integrated into the company's Maxwell Control Panel. The license management now supports FLEXLM, and online documentation has been added.
Ansoft Corp.,
Pittsburgh, PA (412) 261-3200.
Circle No. 247
SOURCES
* VCXOs for Telecom/Datacom
The model VCXO-C3 voltage controlled oscillators (VCXO) offers an outstanding cost-to- performance ratio and features an inexpensive metal DIP package. It is ideal for telecommunications, telephony and datacom applications such as set top boxes. The oscillators feature a standard stability of ±50 ppm over 10° to +70°C. The pullability of the VCXO is a minimum of ±100 ppm with a control voltage of 2.5 V ±2 V on pin 1. The oscillators are offered in frequencies from 1.0 to 30.0 MHz, including the popular 27.000 and 35.326 MHz versions. Price: $1.98 (10,000). Delivery: 10 weeks (ARO).
Fox Electronics,
Fort Meyers, FL (888) 438-2369.
Circle No. 251
* Low Jitter VCXOs
The Panther™ line of miniature surface-mount, voltage controlled crystal oscillators (VCXOs) exhibit extremely clean, exceptionally low jitter properties. This line provides one of the lowest jitter rates (< 1 ps) available. Panther complements the company's line of frequency products for data communications including SONET, Gigabit Ethernet, ATM, STM-1, STS-3c and OC-3 applications. Packaged in a hermetically sealed SMT ceramic package the oscillators operate on +3.3 or +5.0 V DC. All Panther VCXOs employ high frequency fundamental crystal technology and are available in popular frequencies like 77.76 and 155.52 MHz.
CTS Corp., Elkhart, IN (717) 243-5929.
Circle No. 250
* 1.8 V Crystal Clock Oscillator
The NTH series of 1.8 V HCMOS crystal clock oscillators operates over a frequency range of 20 to 70 MHz and a temperature range of 0° to 70°C. Supply current ranges from 6 to 20 mA for frequencies up to 50 MHz, 10 to 50 mA approaching 70 MHz. A tri-state function enables a high impedance output when desired. Available as a half-size, eight-pin through-hole mount DIP metal package, the NTH crystal clock oscillator addresses the needs of developers that prefer leading parts to fit sockets on their development boards.
SaRonix, Menlo Park, CA (650) 470-7700.
Circle No. 252
* SMT Programmable Oscillators
The model CFPP-72 and model CFPP-73 factory programmable oscillators are housed in an industry standard ceramic surface-mount package and are available in any frequency between 1 and 133 MHz. They also provide a readily available alternative to scarce fixed-frequency components for a very wide range of production applications, including telecommunications transmission systems and process equipment. CFPP-72 series oscillators operate from a 5 V supply and cover the entire 1 to 133 MHz frequency range, while the low power CFPP-73 series takes a 3.3 V supply and offers frequencies up to 100 MHz. Both models can be specified for operating temperature ranges from 0° to +70°C or from 40° to +85°C, with frequency stabilities down to ±50 ppm. All devices can be operated in tri-state mode and provide HCMOS output, while the CFPP-72 offers TTL ouput. Components can be supplied in tape-and-reel if required.
C-MAC MicroTechnology,
Harlow, Essex, UK +44 (0) 1279 824200.
Circle No. 249
* Low Noise VCO
The model V621ME07 VCO is designed for demanding, reliable point-to-point radio systems. It delivers unparalleled SSB phase noise performance together with excellent harmonic suppression and is guaranteed to generate frequencies between 1658 and 1718 MHz within 1 to 4 V DC of control, making it very attractive for quick integration into phase-locked loops. In addition, this oscillator is further advanced by providing a spectrally pure signal of 107 dBc/Hz (typ) at 10 kHz from the carrier, while attenuating the second harmonic to better than 25 dBc. Along with improvements in noise suppression, the V621ME07 will optimize any radio PLL due to its 1.1 linearity over frequency and temperature. It also minimizes power consumption by drawing only 2.2 mA (typ), while operating from a 5 V DC supply. The VCO provides the end user 0.25 ±3.25 dBm of output power into a 50 Ω load and can handle any rugged environment by operating over the commercial temperature range of 40° to +85°C. Size: 0.50" * 0.50" * 0.22".
Z-Communications Inc.,
San Diego, CA (858) 621-2700.
Circle No. 254
* Low Jitter, J-type VCXOs
This series of low jitter J-type VCXOs are available at frequencies from 1.024 to 170 MHz and adhere to a package footprint compatible with the industry-common surface-mount J-lead package. Typical jitter performance is < 0.5 ps rms (12 kHz to 20 MHz) at the output frequency for the CMOS version and < 1 ps rms for the PECL option. The units are CMOS or PECL compatible with an input of +3.3 or +5.0 V DC. The devices are ideal for clock smoothing and frequency translation in SONET/SDH, ATM, DSLAM and other telecommunications applications.
Vectron International,
a Dover Technologies company,
Norwalk, CT (888) 328-7661.
Circle No. 253
SUBSYSTEMS
* Module for GPIO Mode
This module for the GPIO mode is designed to interface with the Zeus radio modem, which allows remote switching for controls such as security doors, gates or anywhere a remote switch is needed. The relay module is currently available for the stand-alone trasceiver. The units operate in the 2.4 GHz ISM band and no license is required. A true frequency hopper with 500 mW output that will self adjust to conditions. Certification has been received for use in the US, Canada, Europe and Brazil, with other certifications pending.
RF Neulink, a division of RF Industries, San Diego, CA (858) 549-6340.
Circle No. 259
* Single Channel S-band Synthesizer
The model STEL-9941 high performance single channel S-band synthesizer combines direct digital synthesis (DDS) with microwave mix/divide circuits to accomplish very advanced performance specifications. The frequency resolution is 0.7 Hz, with switching speed of 150 ns and high spectral purity. Standard models operate from 1.6 to 2.8 GHz. Due to its modular design, however, several performance options are available up to 18 GHz with limited effect on lead times. These generic modules are attached to a common baseplate with blind mate connectors. The internal oscillator is free running or phase locks to an external 10 MHz reference. Output power is 0 dBm ±1.5 dB. The unit has an operating temperature of 0° to 70.25°C. Weight: 9.9" * 6.0" * 5.3".
ITT Industries, Microwave Systems, Lowell, MA (978) 441-0200.
Circle No. 256
* Dual-channel Slot Synthesizer
The model PTS DLx10 dual-channel slot synthesizer contains two fully independent high performance, low phase noise, fast-switching slot frequency synthesizers, each covering a 10 MHz decade between 0.1 and 100 MHz, with 0.1 Hz resolution. The unit is housed in a single rack or bench-top cabinet. For each independent channel, frequency control is via a 50-pin parallel interface, which is pin and programming compatible with the remote interface standard on current PTS synthesizers. The instrument features fast frequency switching (5µs max), low phase noise (132 dBc/Hz at 1 kHz offset) and low spurious output (60 dBc). The DLx10 has the capability of operating from either an internal PTS-supplied frequency standard or from a customer-supplied 5 or 10 MHz external drive. Price: $3600 ($4150 with OCXO; $3870 with TCXO). Delivery: four to six weeks (ARO).
Programmed Test Sources Inc.,
Littleton, MA (978) 486-3400.
Circle No. 258
* Switch Mode DC Power Supply
The model 1692 compact, lightweight switching DC power supply utilizes a standard 115 V AC outlet as the power source and provides a variable voltage output of 3 to 15 V DC, or a fixed 13.8 V DC (selectable), and up to 40 A at continuous operation. The DC power supply is suitable for a variety of applications, especially DC operated mobile radio equipment on the bench. The bench-top unit provides high current output in a lightweight and compact package. Weight: 7.7 lb. Size: 8.67" * 4.33" * 11.82". Price: $299.
B&K Precision Corp.,
Placentia, CA (714) 237-9220.
Circle No. 255
TEST EQUIPMENT
* Impedance Test System
The model CITS500s controlled impedance test system for PCB production environments is now available with four channels. The new version allows permanent connection of more than one test probe, for efficient testing of coupons with both single-ended and differential traces. Based on the company's proven time reflectometer (TDR) impedance measurement technology, the CITS500s is very easy to use. The system is controlled by Windows software, and the user simply selects the appropriate test file, positions the test probes and then presses the foot switch to invoke the test. The system comes complete with a 50 Ω single-ended probes and a 100 Ω differential probe as standard. Also available are 75 and 100 Ω variable pitch probes and a barcode reader for identification of PCBs being tested. Measurement accuracy and repeatability of the system is ensured by high precision 28, 50, 75 and 100 Ω reference airlines, which are factory calibrated to traceable to NPL and NIST standards. Price: $34,995.
Polar Instruments Ltd.,
Garenne Park, Guernsey, UK
+44 1481 253081.
Circle No. 262
* Programmable Precision Pulse Generator
The model PB-5 programmable precision pulse generator includes a full-featured, highly flexible ramp generator and complete programmability. As a precision pulse generator, the PB-5 surpasses or equals all existing designs in the important performance areas of resolution, linearity and stability. The pulse repetition rates, which are variable over a broad range, go up to 0.5 MHz. The higher rates are required when testing for MCA and PHA linearity because of the high number of data points required for a statistically valid test. The built-in ramp generator allows the user to control ramp duration, the number of ramps and the ramp limits. The new user interface is intuitive and easy-to-use. Items can be selected and changed by spinner knob and/or keypad pushbuttons. Price: $4580. Delivery: 30 days (ARO).
Berkeley Nucleonics Corp., San Rafael, CA (800) 234-7858.
Circle No. 260
* Test Cable Assemblies
The RHT (replaceable head test) series cable assemblies have a variety of phase matched and replaceable connector heads on an armored flexi ble cable. The RHT 300 and RHT 400 feature a double shielded high performance, high frequency cable assembly, covered by a stainless steel armor and a polyurethane jacket. They can be fitted with a variety of high frequency connector heads. These stainless steel heads include 2.4, 2.92 and 2.5 mm and SMA for the RHT 300 and SME, type N, TNC, ETNC and 7 mm for the RHT 400. A RHT 300 assembly with 2.4 mm connector heads will have a SWR of < 1.45 and an insertion loss of < 1.4 dB/ft at 50 GHz. A RHT 400 assebly with SMA connector heads will have a SWR of < 1.35 and an insertion loss of < 0.48 dB/ft at 26 GHz.
Semflex Inc., Mesa, AZ (800) 778-4401.
Also available from Avnet Electronics Marketing (800) 332-8638.
Circle No. 263
* Active Load Pull System for Wireless Applications
This line of active tuning test sets (ATTS) for independent fundamental and harmonic load pull in the characterization of power devices uses a proprietary design for the absolute stability of the active loop up to higher reflection coefficient irrespective of DUT gamma. It incorporates PoliPull software in Windows NT/2000 to measure data in real-time for device modeling or power amplifier design applications. Using ATTS there is no need to pre-match the device and it also has the capability to measure DUT input reflection coefficient. The system is VNA based, and gives full vector error correction resulting in excellent measurement accuracy.
Maury Microwave Corp., Ontario, CA (909) 987-4715.
Circle No. 261
* Portable RF Analyzer
The model 7500 RF field strength analyzer combines the functionality of a graphic RF spectrum analyzer, frequency counter and tunable RF monitor in a single hand-held instrument. It covers the 100 kHz to 2060 MHz frequency range, and is compatible with AM, single side band (SSB), and narrow or wideband FM. This makes the model 7500 ideal for a wide range of RF signal analysis, detection and verification tests. Applications include mobile, PCS, cellular and cordless phones, antenna tuning, field strength, commercial radio and TV broadcasting, amateur, aeronautical, satellite and marine radio. Weight: < 1.5 lb. Price: $2195.
TEGAM Inc., Geneva, OH (440) 466-6100.
Circle No. 264
TUBES
* High Efficiency C- and Ku-band Traveling Wave Tubes
The model TH 3975(X), TH 3976(L) and TH3977(L) high efficiency traveling wave tubes (TWTs) operate in the extended C and Ku-bands, as well as the specific band for DBS applications. Due to their high output power, these TWTs cover all applications from 400 to 750 W. These tubes provide efficiency exceeding 40 percent, exceptional linearity, high gain, smaller tube size and a low level of dissipated heat.
Thomson Tubes Electroniques,
Velizy Cedex, France +33 (0) 1 30 70 35 00.
Circle No. 265