RF Design Magazine
products 
Jul 1, 2003 
AMPLIFIERS A 4 Watt, 30 GHz packaged amplifier TriQuint Semiconductor Inc. introduced the TGA4905, a 4 W packaged transmit amplifier for satellite ground...

Let's face it, it's time for a face lift 
Jul 1, 2003  Todd Judd Erickson Editor terickson@primediabusiness.com
Change is inevitable. People change, product designs change, even entire markets change. The wireless device markets are in the midst of changing from...

Digitally controlled, variable-gain amplifier 
Jul 1, 2003 
Maxim Integrated Products Inc. introduced the MAX2055, which the company says is the industry's first high-performance, digitally controlled, variable-gain,...

product focus Tx/Rx 
Jul 1, 2003 
Ceramic 2 way power splitter Mini-Circuits Inc. introduced its new SCN series of ceramic 2 way-degree power splitters. The devices operate in the 800...

Analysis and implementation of carrier recovery process in a multimission remote sensing satellite ground station 
Jul 1, 2003  By P. K. Jain, Surendra Pal and V. M. Pandharipande
Remote sensing satellites transmit digitally modulated signals of different data rates in different PSK modulation schemes. The ground stations meant for receiving these signals are designed with the feed and front-end system broad enough to accommodate the reception of signals anywhere in the assigned spectrum. Various carrier regeneration schemes have been developed and implemented in this multimission demodulator design for optimal performance in different applications. This article briefly d...

Reflections on Transistor Stability 
Jun 1, 2003  By Stan Alechno
When designing amplifiers, one goal is to get rid of any oscillations. The standard approach is to examine the so-called K-factor, or stability circles on the Smith chart. However, there are limitations to this approach. This paper examines those limitations and presents a new methodology to reduce oscillations by employing a complex sphere....

The 4G soldier new developments in military mobile communications 
Jun 1, 2003  By Dr. Larry Williams and Allen Kupetz
The key to empowering the military with tactical broadband voice, video and data is 4G communications technology that requires a minimal amount of fixed infrastructure, is small and highly portable, and inexpensive enough to be standard issue for every soldier....

Introduction to GSM and GSM Mobile RF Transceiver Derivation 
Jun 1, 2003  By Paul Kimuli
The GSM system works properly only when its component parts operate within precise limits. Learn the key measurements required for testing GSM transceivers....

products 
Jun 1, 2003 
Low-noise amplifier ICs for broadband millimeter wave communications TriQuint Semiconductor Inc. announced the introduction of three new low-noise amplifier...

product focus test and measurement 
Jun 1, 2003 
Anritsu Co. Measurement Solution for Handset Power Amplifiers Anritsu Co. Corp. introduced the ME7840/4 handset power amplifier test system (PATS), a...

Designing Signals for Arbitrary Waveform Generators 
Jun 1, 2003  By Andy Street
Many modern RF signal generators are equipped with a baseband signal processing board that includes a dual arbitrary waveform generator, which is used to drive an IQ modulator. These signal generators typically support a wide variety of modulation schemes implemented either as part of their firmware personalities or via dedicated external software packages. An alternative to instrument specific multitone, modulated pulsed signals is to design the waveform in customized software....

PSCPS Family of Coplaner Analog Phase Shifters 
Jun 1, 2003 
Agile Materials & Technologies Inc. announced its PSCPS family of coplanar analog phase shifters. These products are the first in a series that enable...

Serving the new DoD cheaper, faster, stronger 
Jun 1, 2003  By Mason Carter
As the telecommunications industry comes to grips with standards issues, debt loads larger than some countries' GNP, and dozens of unanswered technical questions, the microwave industry is looking for ways to replace its lost wireless revenue. Ironically, this new business may well come from the same source that was lost in 1990 when microwave companies rode off into the wireless revolution: the defense industry. The microwave manufacturers that plan to prosper in this new military environment m...

Ultrawideband: New promises, new problems 
Jun 1, 2003  By William Stumpf
Ultrawideband (UWB) uses low-power transmission of a high-speed pulsed radio signal to send information through the air over short distances. The pulses are very short or narrow, resulting in a wide transmission bandwidth. UWB technology may lead to advances in safety and rescue operations, military applications, medical imaging, and enable broadband communications to devices in homes and offices....

Products 
Jun 1, 2003 
Commercial prescalers for advanced synthesizer apps Inphi Corp. announced six pre-scalers for advanced synthesizer applications requiring low and stable...

Correlating High-Speed ADC Performance to Multicarrier 3G Requirements 
Jun 1, 2003  By Brad Brannon
The sensitivity analysis of multicarrier 3G receivers depends on various aspects of the system design goals. While linear devices have well known system contributions, data converters contribution to system performance is less well understood. This article will provide guidelines for analog-to-digital converter (ADC) selection based on receiver performance requirements....

RF Module Design: Requirements and Issues 
Jun 1, 2003  By William Dunham, Rich Kirkham, Doug Stolarz and Juergen Hartung
At the hub of a top-down design flow for an RF-system-design-to-product implementation is the RF module design for RF integrated circuits (RFICs), boards and a final RF system prototype. A lack of EDA tool integration and/or standard data-interfaces for the various design disciplines — such as the RF system, printed circuit boards (PCBs), IC packages and IC designs, and prototype testing — have contributed to the difficulty of achieving more accurate models. This article will highlig...

RF Fundamentals 
Jun 1, 2003  By Keith Vick
As I am sure some of you have noticed, there have been a few changes on the editorial staff of RF Design in the last few months. I am the latest addition...

An Innovative Shortwave Coupler Design 
May 1, 2003  By Michael P. Gaynor
The wireless industry is demanding modules with more functionality and smaller size1. The designer must achieve this combined functionality at a lower...

Does Next-Gen Phone's Success Hang on the Cool Factor? 
May 1, 2003  by Ernest Worthman Technology Editor eworthman@primediabusiness.com
I received an e-mail I recently with an article that eluded to the fact that the next generation of cell phones will succeed based on the factor. What...

MMDS, Wireless Broadband Access and the Last Mile 
May 1, 2003  By Mike Rude
Two-way multichannel, multipoint distribution service (MMDS) is a cost-effective, wireless alternative to digital subscriber lines (DSL) and cable modem...

Techniques for Determining Small Antenna Gain 
May 1, 2003  By Riad Ghabra and Argy Petros
In miniature receiver design, such as keyless entry and security devices, one challenging task is optimizing all circuits affecting radiated sensitivity....

products 
May 1, 2003 
Short Range Unidirectional Radio Frequency System Microchip Technology Inc. introduced a complete system for short-range uni-directional RF communications....

A Low Noise, Multiple Output PLL Synthesizer for Radar Applications 
May 1, 2003  By Manish Vaish
Advanced radar applications require highly stable frequency references with extremely low phase noise floor performance. Generally the frequency of references...

product focus passive components 
May 1, 2003 
Mil Spec SMPS Stacked Capacitors AVX Corp. is offering encapsulated stacked capacitors for very high-performance applications in both T- and B-levels...

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