advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement

Industry News

Ultraminiature Coaxial Connectors for SMT Applications

A new generation of surface-mount technology (SMT) coaxial connectors that further miniature interconnects and provide cost savings
PRODUCT FEATURE Ultraminiature Coaxial Connectors for SMT Applications RF Interconnect Products Radiall Inc. Stratford, CT T he ever-increasing demand for miniaturization in microwave communications systems and equipment continues to require components that are both smaller and less costly. One of the determinants of size has traditionally been interconnect devices....
Read More

A Flyaway Tri-band SATCOM SSPA

The first tri-band solid-state power amplifiers (SSPA) for use in earth terminals with X-band military satellites and C- and Ku-band commercial satellites
PRODUCT FEATURE A Flyaway Tri-band SATCOM SSPA Advantech, Advanced Microwave Technologies Inc. Dorval, Quebec, Canada T he first tri-band solid-state power amplifier (SSPA) for use in earth terminals with X-band military satellites and C- and Ku-band commercial satellites has been developed. The amplifier is designed to operate in any...
Read More

A Broadband 2 to 18 GHz Cascaded Reactively Terminated Single-stage Distributed Amplifier

A novel design technique and measured performance for a broadband amplifier using a cascaded reactively terminated single-stage distributed amplifier configuration
TECHNICAL FEATURE A Broadband 2 to 18 GHz Cascaded Reactively Terminated Single-stage Distributed Amplifier This article presents a novel design technique and measured performance for a broadband (2 to 18 GHz) amplifier using a cascaded reactively terminated single-stage distributed amplifier (CRTSSDA) configuration. The amplifier employs double heterojunction pseudomorphic high...
Read More

Limitations in Feed-forward Linearization: Part II

The effects of main path amplifier distortion characteristics on feed-forward systems
TECHNICAL FEATURE Limitations in Feed-forward Linearization: Part II This article analyzes the effects of main path amplifier distortion characteristics on feed-forward systems. Part 1 ( Microwave Journal , August 2000) described the basic operation of a feed-forward amplifier system and the impact of nonideal effects on the ability of...
Read More

Effects of RF-circuit Nonlinear Distortion on Digitally Modulated Signals in Wireless Communications

Computer simulation and measurement of the error vector magnitude and adjacent-channel power ratio of a 2.4 GHz MMIC power amplifier and a 2.4 GHz transceiver RF front end for digital wireless communications
TECHNICAL FEATURE Effects of RF-circuit Nonlinear Distortion on Digitally Modulated Signals in Wireless Communications Computer simulation and measurement of the error vector magnitude (EVM) and adjacent-channel power ratio (ACPR) of a 2.4 GHz MMIC power amplifier (PA) and a 2.4 GHz transceiver RF front end for digital wireless communications...
Read More

Applying Switched Gain Stage Concepts to Improve Efficiency and Linearity for Mobile CDMA Power Amplification

Improvements obtained using a switched gain stage power amplifier where the second stage is bypassed at lower output power levels
TECHNICAL FEATURE Applying Switched Gain Stage Concepts to Improve Efficiency and Linearity for Mobile CDMA Power Amplification Efficiency and linearity of the power amplifier contained in second-generation (2G) CDMA cellular mobile radios are critical parameters. Further system application of power control where the mobile unit transmits output power levels...
Read More

Liquid Sensing at Radio Frequencies

Complex impedance measurement of liquid samples as a function of frequency
TECHNICAL FEATURE Liquid Sensing at Radio Frequencies Combining RF measurements of complex impedance and a database of measurements can produce a sensing system to detect, identify and quantify changes to liquids and other materials in near real time. Thomas J. Warnagiris Southwest Research Institute San Antonio, TX C omplex...
Read More

Stabilization of RF Parameters of Injection-locked Pulsed IMPATT Oscillators

Methods for RF parameter stabilization of injection-locked pulsed impact avalanche and transit time (IMPATT) oscillators during a pulse width over the locking band in a wide range of ambient temperatures
TECHNICAL FEATURE Stabilization of RF Parameters of Injection-locked Pulsed IMPATT Oscillators The methods for RF parameter stabilization of injection-locked pulsed impact avalanche and transit time (IMPATT) oscillators during a pulse width over the locking band in a wide range of ambient temperatures are described. A combination of current compensation...
Read More

The International Broadband Wireless Jigsaw

A survey of impending international changes and developments in the world of broadband wireless technology
EUROPEAN SUPPLEMENT The International Broadband Wireless Jigsaw From ramp-up to near-3G services to developing broadband wireless for fixed network access, this year has seen major moves in the deployment of wireless services and technology introductions. In this special supplement, Microwave Journal surveys the impending international changes and developments in...
Read More

High Performance Wideband MMIC Low Noise Amplifiers

Two fabricated 0.25 µm first-passs pHEMT wideband MMIC low noise amplifiers that operate from 1 to 8 GHz and 5 to 20 GHz, respectively
TECHNICAL FEATURE High Performance Wideband MMIC Low Noise Amplifiers This article presents two fabricated 0.25 µm first-pass pHEMT wideband MMIC low noise amplifiers (LNA) covering 1 to 8 GHz and 5 to 20 GHz, respectively. Wideband MMIC LNAs are usually designed with the emphasis on noise figure, which sacrifices...
Read More

Sign-In

Forgot your password?

No Account? Sign Up!

Get access to premium content and e-newsletters by registering on the web site.  You can also subscribe to Microwave Journal magazine.

Sign-Up

advertisment Advertisement