advertisment Advertisement
This ad will close in  seconds. Skip now
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement

Industry News

A Mobile Ultra-low Phase Noise Sapphire Oscillator

Introduction to a low noise fixed-frequency X-band sapphire cavity oscillator
Poseidon Scientific Instruments Pty Ltd.
No Comments
Product Feature A Mobile Ultra-low Phase Noise Sapphire Oscillator Poseidon Scientific Instruments Pty Ltd. Fremantle, Western Australia Radar, communications, and test and measurement designers require ever-improving phase noise performance in their master oscillator. For mobile system success, ultra-low phase noise performance must be coupled with exceptional immunity to vibration...
Read More

2.5 V GaAs pHEMT Switches for GSM Handsets

A new line of 2.5 V GaAs pHEMT switches for GSM handsets is featured
MACOM
No Comments
Cover Feature 2.5 V GaAs pHEMT Switches for GSM Handsets M/A-COM Lowell, MA A new line of robust GaAs pHEMT switches for operation in 2.5 V GSM handsets has been developed. These switches feature performance that is unrivaled in the industry for harmonics at 2.5 V in addition to...
Read More

A CMOS-based Front-end Downconverter for GPS Applications

Description of a CMOS-based front-end downconverter used to downconvert incoming satellite signals from 1.575 GHz to an intermediate frequency of 1.023 MHz
Valence Semiconductor
No Comments
Product Feature A CMOS-based Front-end Downconverter for GPS Applications Valence Semiconductor Irvine, CA The industry is striving for single-chip Global Positioning System (GPS) designs given the limited real estate available within cell phones, personal digital assistants (PDA) and other consumer electronic devices. Since GPS designs are typically comprised of...
Read More

Advanced Microwave Chip Capacitor Models

Use of accurate substrate-dependent chip capacitor models in computer-aided engineering software
Modelithics Inc.
No Comments
Product Feature Advanced Microwave Chip Capacitor Models Modelithics Inc. Temple Terrace, FL Fig. 1 Measured S 11 of a 4.7 pF 0402 chip capacitor on different thickness FR4 substrates (series configuration). The use of computer-aided engineering (CAE) software by microwave printed circuit board (PCB) designers has become commonplace. These...
Read More

Antenna Selection to Minimize Pointing Requirements

Use of antenna optimization to ensure antenna pointing requirements are kept to a minimum
Keith Willey
No Comments
Technical Feature Antenna Selection to Minimize Pointing Requirements Traditionally, when designing a satellite communications system, an allowance is made in the link budget for pointing loss. The earth station's antenna size is then selected to achieve the desired gain margin. In this article, a different approach called antenna optimization...
Read More

Axial Ratio Measurements of Single Circularly Polarized Antennas

Presentation of a procedure for measuring the axial ratio of single circularly polarized antennas
Robert Gunnels
No Comments
Technical Feature Axial Ratio Measurements of Single Circularly Polarized Antennas Robert Gunnels Andrew Corp. Orland Park, IL The measurement of antenna axial ratios must be done properly if accurate results are to be obtained. When measuring on a terrestrial antenna test range, a straightforward approach is often used whereby...
Read More

SOI CMOS Technology For RF System-on-chip Applications

Overview of current advances in silicon-on-insulator (SOI) CMOS technology, including reduction in cross-talk between RF and digital circuits and integration of high quality passive elements
Jerry Yue and Jeff Kriz
No Comments
Technical Feature SOI CMOS Technology For RF System-on-chip Applications CMOS technology is one of the most promising choices for RF applications. Its highly integrated nature provides true RF system-on-chip integration. Silicon-on- insulator (SOI) CMOS offers specific additional design advantages that include a significant reduction in cross-talk between RF and...
Read More

Performing Transient Analysis on PLL Frequency Synthesizers

Use of system-level simulation tool with flexible behavorial modeling capability to simulate and enhance the performance of a wireless PLL circuit
David Vye
No Comments
Technical Feature Performing Transient Analysis on PLL Frequency Synthesizers A PLL can be considered a subsystem within a larger communications system, so it is appropriate to analyze this type of network with the help of a system-level simulator. The use of flexible behavioral models within the simulator allows only...
Read More

A Feedforward Power Amplifier with Loops to Reduce RX Band Noise and Intermodulation Distortion

Introduction to a new power amplifier developed to reduce amplified noise and intermodulation distortion signals using a feedforward technique
Yong-Chae Jeong
No Comments
Technical Feature A Feedforward Power Amplifier with Loops to Reduce RX Band Noise and Intermodulation Distortion This article proposes a new power amplifier approach for the reduction of amplified noise signals in the receiver (RX) band as well as intermodulation distortion signals in the transmitter (TX) band using a...
Read More

A Large Bandwidth T-shaped Microstrip-fed Ground Plane Slot Antenna

Use of the finite difference time domain method to analyze the impedance of the T-shaped microstrip feedline structure
Yong-Woong Jang, Jeong-Chull Yoon and Ho-Sub Shin
No Comments
Technical Feature A Large Bandwidth T-shaped Microstrip-fed Ground Plane Slot Antenna The characteristics of a T-shaped microstrip feeding a ground plane slot antenna have been analyzed using the finite difference time domain (FDTD) method. The impedance and bandwidth of the proposed antenna depend highly on the design parameters. The...
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