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

Industry News

Phase Invariant Attenuators

Use of phase invariant attenuator to change the amplitude in the processing of a microwave signal with minimal impact to the phase characteristic
Product Feature Phase Invariant Attenuators G.T. Microwave Inc. Randolph, NJ The function of a phase invariant attenuator is to change the amplitude in the processing of a microwave signal with minimal impact to the phase characteristic. The theory of operation is that when a signal reaches its maximum attenuation,...
Read More

Electronically Tunable Thin Film Filters for Microwave Applications

A new line of electronically tunable RF filters is featured
Cover Story Electronically Tunable Thin Film Filters for Microwave Applications Paratek Microwave Inc. Columbia, MD Interference in wireless systems increases bit error rate (BER) and decreases the reliability and quality of service of the communication network. Interference mitigation requires filtering of the transmitted and received energies to reject all...
Read More

Dual Mode Broadband Hybrids: Theory and Experiment

Development of a theoretical approach to the control and optimization of the major parameters of side and top wall hybrid couplers
Technical Feature Dual Mode Broadband Hybrids: Theory and Experiment Alex D. Lapidus Microwave Communications Company International Inc. Valencia, CA A theoretical approach to both side and top wall (hybrid) couplers based on strong experimental work is developed. Broadband operation, related to dual mode propagation through the coupling section, is...
Read More

Implementation of a Neural Network HEMT Model into ADS

An approach for implementing a neural network algorithm to develop a large-signal HEMT model into ADS
Technical Feature Implementation of a Neural Network HEMT Model into ADS Neural network algorithms have been applied to various areas of engineering and computer science. A high electron-mobility transistor (HEMT) large-signal model has been implemented in the Advanced Design System (ADS) software package using a multilayered neural network. The...
Read More

A Broadband Planar Isolator Using Coupled Microstrip Lines on a Magnetized Gyrotropic Substrate

Introduction to a new type of broadband isolator using nonreciprocal coupling between two microstrip lines fabricated on a magnetized gyrotropic substrate
Technical Feature A Broadband Planar Isolator Using Coupled Microstrip Lines on a Magnetized Gyrotropic Substrate A new type of broadband isolator, using coupled microstrip lines on a transversely magnetized gyrotropic substrate, is proposed in this article. The nonreciprocal coupling between two microstrip lines can be used to create an...
Read More

Aluminum Nitride vs. Beryllium Oxide for High Power Resistor Products

Extensive study on the use aluminum nitride as an alternative to beryllium oxide for high power resistor and termination applications
Technical Feature Aluminum Nitride vs. Beryllium Oxide for High Power Resistor Products Michael Kettner, Patrick Biebersmith, Nelson Roldan And Balram K. Sharma Florida RF Labs Inc. Stuart, FL For the past few decades, beryllium oxide (BeO) has been the main substrate material used for RF resistors and terminations for...
Read More

Planar EM Simulation of Multi-chip Modules and BGA Packages

Effect of planar electromagnetic simulators on multi-chip modules and ball grid array mounting techniques
Technical Feature Planar EM Simulation of Multi-chip Modules and BGA Packages Jim DeLap Agilent EEsof EDA Westlake Village, CA As electronics vendors and consumers demand smaller and lower cost products, manufacturers must find ways to increase levels of integration while maintaining product functionality. These higher levels of integration are...
Read More

An Embedded MOS Model 9 for CMOS RF Circuit Design

Presentation of an n-channel MOS transistor model for the simulation of CMOS RF circuits in the gigahertz range
Technical Feature An Embedded MOS Model 9 for CMOS RF Circuit Design This article presents an n-channel MOS transistor model for the simulation of CMOS RF circuits in the gigahertz range. This model is based on a MOS model 9 (MM9) compact transistor model, embedded in a network describing...
Read More

Rigorous Analytical Expressions for Electromagnetic Parameters of Transmission Lines: Coupled Sliced Coaxial Cable

A set of accurate closed-form formulas for primary parameter matrices and even- and odd-mode impedances for coupled sliced coaxial cables
Technical Feature Rigorous Analytical Expressions for Electromagnetic Parameters of Transmission Lines: Coupled Sliced Coaxial Cable This article is a continuation of a previous article that appeared in Microwave Journal and is the first part in the development of accurate closed-form formulas for the primary parameters (inductance [L] and capacitance...
Read More

Circuit Designers: An Endangered Species?

Overview of the impact of sophisticated CAD software on today's analog design engineer
Special Report Circuit Designers: An Endangered Species? Ernest Rejman, Contributing Editor Back in the Jurassic Period, when the four-function calculator first made its appearance, some greeted it with dismay. "Suitable for imbeciles," spat an elder engineer of my acquaintance. "Now it won't be necessary to even know how to...
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