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Microwave Journal

May 2010

May 2010 Issue

Volume: 0
Edition: 5

Cover Feature

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Emerging Technology and Market Trends for Frequency Controlled Circuits and Timing Devices

This article reports the current trends in timing solutions (timing devices and frequency control circuits) for modern electronic and communication systems, including the transition from discrete frequency sources to integrated circuits. Solutions that...
Current versions of handsets do not seem to be getting smaller as they are already quite small. In fact, some handsets are becoming bigger to accommodate more functions desired by consumers, such as DSC, DVC, MP3, GPS, Internet access, Bluetooth, DTV, etc. Opposite to the earlier thought that fewer...
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Technical Features

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A Highly Linear Low Noise Amplifier

Design of a highly linear receiver low noise amplifier used to downconvert high power signals in conformance to modern wireless standards
In full-duplex communication systems such as W-CDMA, a receiver’s tolerance to unwanted transmit signals, including a co-located transmitter, is significantly important since transmission and reception occur simultaneously. Since transmit signals can be as little as 30 MHz away in frequency from the receive signal, surface acoustic wave (SAW) filters...
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Multiport Power Amplifiers for Flexible Satellite Antennas and Payloads

Use of multiport power amplifiers in satellite transponders allowing higher edge of coverage gains and more efficient use of the frequency spectrum
In the last few years, the architectural design of satellite communications payloads has benefited from the view point of flexibility, from the adoption of Multiport Power Amplifiers (MPA). Multiport power amplifiers offer a means to combine discrete amplifiers in a way that is reconfigurable and will degrade gracefully in...
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Bandwidth Improvement of a Single-stage Distributed Amplifier

A novel design of a single-stage microwave distributed amplifier is presented in this article. The design is based on the use of a Chebyshev polynomial to express the transducer power gain of the distributed amplifier. The obtained amplifier provides a considerable increase in the bandwidth as compared to both...
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A Dual-band CPW-fed Monopole Antenna for IMT-2000/WLAN

A novel and simple dual-band design of a coplanar waveguide (CPW)-fed monopole antenna is proposed. By adding lateral patches to the sides of a pentagonal monopole, multi-resonant modes with two separate broad operating bands can be generated for wirel...
Over the past decade, extensive research on broad dual- or multi-band antennas, with low-profile, lightweight, flush mounted and single-feed to fit the limited equipment space of portable wireless devices, has contributed to the development of modern communication technology. In the past, a whole host of dual- or multi-band planar...
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Special Reports

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The Puzzler - May 2010

Amplifiers and Oscillators Download the Puzzler (PDF) Across 1 PLL (3 words) 4 Short term variations of a signal with respect to its ideal position in time 6 A rate change in free running VCO frequency, when the power supply level changes (2 words) 8 Solid State Power Amplifier...
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Tutorial

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Product Features

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3G Power Amplifier Promises to Initiate Industry Shift to CMOS

MVPIntroduction to a power amplifier designed to initiate a shift in handset power amplifier technology from GaAs to CMOS
CMOS power amplifiers (PA) are prevalent in today's WiFi and Bluetooth markets, yet extensive industry-wide development efforts for CMOS PAs for 2G and 3G mobile handsets have so far failed to yield a product that met the performance of incumbent GaAs PAs. However, a new CMOS PA from Javelin...
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RF5755 Front End Module

IMSInsiderRFMD5755RFMD’s RF5755 front end module delivers a complete integrated solution for handset/handheld WLAN 802.11b/g/n and Bluetooth® systems. The module also features integrated matching circuitry with output harmonic attenuation, reducing BOM and manufacturing costs.


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EpHEMT MMIC Product Line

RFHIC expands its market position with EpHEMT GaAs MMIC by securing design wins across leading CATV line extenders and optical network system manufacturers.
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SKY77701-SKY77705 PAMs

Skyworks Solutions Inc. has introduced five 3 x 3 mm power amplifier modules (PAMs) with integrated daisy chain coupler for next-generation platforms.
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HMC-T2100B Synthesized Signal Generator

hmc-t2100b_100Hittite Microwave Corporation, the world class supplier of complete MMIC based solutions for communication & military markets, has launched the HMC-T2100B, the first battery powered, 10 MHz to 20 GHz Portable Synthesized Signal Generator. Designed to fulfill signal generation needs in the field or on the bench, and priced at only $14,998.


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New Products

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New Products

Medium Power Amplifiers AML announces the immediate availability of medium power broadband amplifiers model AML0126P3001 and AML0126P3002. Operating in the frequency range of 100 MHz to 26.5 GHz, these amplifiers offer gain of 30 dB minimum and typical noise figure below 5 dB (above 500 MHz). Output P1dB is...
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Departments

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Net-centric Communication Trends to Boost MilSatCom

Satellite-based communications, with their broad coverage areas, allow geographically dispersed users to exchange information quickly and efficiently. Higher bandwidth availability and networking requirements in Military Satellite Communications (MilSatCom) create new opportunities for advanced electronic components. The Strategy Analytics Advanced Defense Systems (ADS) service report, "MilSatcom Electronic Market Trends through...
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Peregrine and IBM Partner on SOS Roadmap

Peregrine Semiconductor and IBM have teamed up to develop and manufacture future generations of Peregrine's patented UltraCMOS™ silicon-on-sapphire (SOS) process technology. When fully qualified, the next-generation UltraCMOS RF ICs will be manufactured by IBM for Peregrine in the jointly-developed 180-nanometer RF CMOS process at IBM's 200 mm semiconductor manufacturing...
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Around The Circuit

Industry News Wireless Telecom Group Inc. announced the execution of a definitive agreement to sell substantially all of the operating assets of its wholly owned subsidiary Willtek Communications GmbH and affiliates to Aeroflex Inc. , a Delaware corporation, in exchange for $2,750,000 in cash and the assumption of certain...
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Catalog Update

Hi-Rel Components Short Form Catalog This new short form catalog from Aeroflex/Metelics Hi-Rel Components outlines the current product portfolio of JAN-certified discrete products. Included are Switching, TC Zeners, and Zener Diodes that are certified to MIL-19500 for JAN, JANTX and JANTXV. Aeroflex/Metelics Hi-Rel Components also offers Class H and...
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The Book End

Discrete Oscillator Design: Linear, Nonlinear, Transient, and Noise Domains Randall W. Rhea This is Randy Rhea’s third book on oscillator design and is motivated by a decade of advancement in the state-of-the-art, his additional design experience and questions/feedback from his students. Discrete Oscillator Design: Linear, Nonlinear, Transient, and Noise...
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