Industry News

Comtech Receives Orders Totaling $24.3 M

Comtech Telecommunications Corp. announced that its Maryland-based subsidiary, Comtech Mobile Datacom Corp., received orders totaling $24.3 M in support of ongoing Movement Tracking System Program activities. The orders were received on the company's Movement Tracking System (MTS) contract with the US Army. Total orders received to date against the...
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Qualcomm and Motorola to Collaborate on UMTS Handsets

QUALCOMM Inc. and Motorola Inc. announced an expansion in their relationship. In addition to collaborating on CDMA2000®, the two companies will now be working together to bring UMTS handsets to global markets. Motorola Mobile Devices has approved QUALCOMM's Mobile Station Modem™ (MSM™) chipsets for incorporation into future UMTS handset...
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Comarco and Ascom Establish Alliance

Comarco Wireless Test Solutions , a supplier of wireless test systems for field applications, and Ascom , a specialist in wireless onsite communication solutions, announced that the two companies have formed a cooperative alliance to develop and market 3G and 4G wireless network Quality of Service, optimization and test...
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RF Component Profits Steady in Q2 2006

Strategy Analytics’ RF & Wireless Component service has released “RF Component Industry Review: April - June 2006,” which notes that more than half of the leading suppliers of RF components reported significant profits in Q2, about the same industry financial performance as reported in Q1. In the second quarter...
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Intermodulation Distortion in Medium-power Drop-in Ferrite Isolators and Circulators

One of the major applications for ferrite junction components is in base station amplifiers. Each amplifier module may include several isolators, which typically provide mismatch protection. In the case of the isolator placed between the power amplifier and the antenna, the primary purpose is protection against high levels of...
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Novel Microstrip Band-stop Filters Based on Complementary Split Ring Resonators

In this article, the stop-band characteristics of complementary split ring resonators (CSRR) and their applications to microstrip band-stop filters are proposed. The equivalent circuit model of a unit CSRR is applied to explain its characteristics and ...
In recent years, there has been a growing interest in electromagnetic bandgap structures (EBG), which exhibit the properties of rejecting electromagnetic waves at certain frequencies. The most interesting applications for these structures are the filtering of frequency bands or the suppression of undesired spurious passbands and harmonics in microwave...
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A Novel Wideband Transition Between a Conductor-backed Finite Ground CPW and a Microstrip Line

This article describes a transition between a conductor-backed coplanar waveguide (CPW) and a microstrip line, which provides a very low loss alternative to a standard microstrip-to-coplanar line transition at higher frequencies. This simple topology i...
Microstrips (MS) and coplanar waveguides (CPW) are two of the main waveguide structures used in higher frequency applications, because of their compatibility with monolithic fabrication and solid-state devices. In CPW, the signal lines and ground planes are placed on one side of the substrate, permitting a circuit consisting of...
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