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Inverted Mesa Fundamental-mode Crystals

Low cost, high frequency crystals developed using a proprietary processing technology that produces crystals with low series resistance, high pulling ability adn good unit-to-unit and lot-to-lot repeatability
October 1, 1999
Champion Technologies Inc.
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Inverted Mesa Fundamental-mode Crystals Champion Technologies Inc. Franklin Park, IL High frequency fundamental-mode crystals are increasingly in demand for applications such as precision high speed clocks, voltage-controlled crystal oscillators (VCXO) and voltage-controlled temperature-compensated crystal oscillators (VCTCXO). However, conventional crystal processing utilizing flat quartz blanks has limited the available frequency...
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A Microwave Antenna Path-alignment Test Set

A test set that offers an accurate and cost-effective method of microwave antenna alignment that is easily performed by two technicians without the use of system radios
October 1, 1999
XL Microwave Inc.
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A Microwave Antenna Path-alignment Test Set XL Microwave Inc. Oakland, CA Microwave links require accurate path alignment to ensure proper operation. This process has traditionally required highly trained tower crews to physically align the antennas as well as ground technicians and complex and expensive test equipment to monitor the...
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A Transceiver Chipset for 2.4 GHz Direct Sequence Spread Spectrum Applications

A transceiver chipset for 2.4 GHz direct sequence spread spectrum applications is featured on this month's cover
October 1, 1999
RF Micro Devices
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A Transceiver Chipset for 2.4 GHz Direct Sequence Spread Spectrum Applications RF Micro Devices Greensboro, NC The 2.4 GHz industrial, scientific and medical (ISM) band is coming of age, largely due to the coincidental emergence of three wireless local area network (LAN) standards. However, there are still relatively few...
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Programmable Attenuator Subsystems

A flexible, easy-to-program, low cost attenuator solution for benchtop test and calibration setups and sunsystem applications
October 1, 1999
Weinschel Corp.
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Programmable Attenuator Subsystems Weinschel Corp. Frederick, MD Finally there is a low cost, easy-to-use programmable attenuator for use on the test bench or in subsystem applications. The new 8310 series SmartStep™ attenuator units represent a new concept in programmable attenuation that is both flexible and easy to program. The...
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Digital Predistortion Techniques for RF Power Amplifiers with CDMA Applications

The application of digital predistortion to both GaAs and laterally diffused metal oxide semiconductor amplifiers with narrowband and wideband input signals
October 1, 1999
Frank Zavosh, Mike Thomas, Chris Thron, Tracy Hall, Daniel Artusi, David Anderson, David Ngo and David Runton
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Technical Feature Digital Predistortion Techniques for RF Power Amplifiers with CDMA Applications Frank Zavosh, Mike Thomas, Chris Thron, Tracy Hall, Daniel Artusi, David Anderson, David Ngo and David Runton Please click here to view the pdf file of the Technical Feature...
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Microwave MCM-C Utilizing Low Loss LTCC and Photo-patterning Processes

A new low loss, low temperature cofired ceramic (LTCC) technology, offers outstanding interconnect density and microwave performance
October 1, 1999
Peter Barnwell, Michael O'Neill and Charles Sabo
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Microwave MCM-C Utilizing Low Loss LTCC and Photo-patterning Processes Microwave applications at frequencies in excess of 1 GHz, such as wireless devices, are well suited to ceramic construction. Other circuit fabrication technologies do not exhibit the same balance of low loss, precise geometries, cost and reliability. In addition, ceramic...
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Vector Signal Measurement for 38 GHz Digital Radio Applications

A 38 GHz vector signal measurement test set and its application for performing vectorsignal analysis of a 37 to 40 GHz power amplifier module
October 1, 1999
G. Samuel Dow, Jeff Yang, Kuo-Hsiang Yen, Robert Matreci, Eric Spotted-Elk, Stephen Pettis and Long Trinh
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Vector Signal Measurement for 38 GHz Digital Radio Applications G. Samuel Dow, Jeff Yang and Kuo-Hsiung Yen, TRW, Electronics Technology Division Redondo Beach, CA Robert Matreci, Eric Spotted-Elk, Stephen Pettis and Long Trinh Hewlett-Packard Co., Santa Rosa Systems Division Santa Rosa, CA Broadband access using millimeter-wave digital radio technology...
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