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Industry News

Dual Slant Linearly Polarized Antenna for Broadband High Power Applications

Enhanced performance is needed from antennas, radomes and other microwave components to support ever-increasing functionality for military communications and electronic warfare (EW) applications. There is a continuing demand for antennas with broader bandwidth, higher power handling and better controlled radiation patterns, while at the same time reducing size and...
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High Speed Digital Packaging

This article presents the detailed design drivers for high speed digital packaging. Transmission line and interconnect requirements for packaging high speed digital assemblies are discussed. Details of the mechanical requirements to properly attach the...
A number of factors are driving the design of high speed digital packaging. At the assembly level, metal boxes are the dominant configuration due to mounting and interconnect constraints. The next assembly connectivity is accomplished through cables, requiring coaxial connectors. Since a variety of companies manufacture many of the...
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A GSM Standard Band Selective Repeater

In recent years, GSM systems have been deployed using many base transceiver stations (BTS). However, in some areas, such as basements of buildings, tunnels and valleys, there may be no signal, and in some regions fading may occur. These problems can be solved cheaply by implementing repeaters. Figure 1...
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Using Guided Wavelength as a Basis for the Design of Dielectric Rod Antennas

When designing dielectric rod antennas for maximum bandwidth, maximum gain, minimum beamwidth and/or low side lobes, design parameters reported in the literature are provided in terms of free-space wavelength. While this methodology lends itself well to other antenna types, it is not as useful when used to describe dielectric...
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Fast and Accurate High Power Device Characterization with a Microstrip SOL Method

High power device characterizations, performed with a microstrip short-open-load (SOL) calibration kit, are presented. This article demonstrates an interesting alternative to the classical through-reflect-line (TRL) method, when only terminating impeda...
Precise device characterization is the starting point of any good circuit design. This task can be particularly challenging when the device is a high power transistor having low input and output impedances. For devices working only under pulse conditions, specific test benches exist 1 but are rather complicated and...
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An Aircraft Single-antenna FM Radio Altimeter

Advantages of a frequency modulated single-antenna radio altimeter, including lower cost and weight, improved accuracy and higher altitude range
As is well known, there are two general types of altimeter systems - a pulse radar altimeter and a frequency modulated, continuous wave (FM-CW) radio altimeter. Aircraft radio altimeters typically operate at altitudes from 0 to 8000 feet utilizing separate antennas for transmit and receive. Such radio altimeters have...
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Welcome to the 2003 International Microwave Symposium

Welcome to Philadelphia, home of the 2003 International Microwave Symposium! The fifth-largest city in the United States and the second largest on the East Coast, Philadelphia (known from June 8-13, 2003 as Microwave Metropolis) is one of the world's most dynamic destinations. In Philadelphia, you will be at the...
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Attending the Conference

This year the IEEE MTT-S International Microwave Symposium (IMS) and Exhibition will be held in Philadelphia, PA at the Pennsylvania Convention Center. Although the MTT-S Symposium was hosted by the Philadelphia Chapter of MTT-S at Cherry Hill, NJ in 1976, this is the first time the IMS will be...
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Philadelphia: So Much to Do, So Little Time

Philadelphia, nestled between New York City and Washington, DC, has at times been overlooked or forgotten when noting major US cities. But since it is one of America's oldest cities (1682), Philly has had, I guess you could say, a little head start over other towns. No wonder she...
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2003 IMS Exhibitors

The following list is complete as of April 9, 2003. 7 Layers.......... 2619 A-Alpha Waveguide Co........... 2410 AC Microwave.......... 1048 Accent Optical Technologies.......... 2010 Accumet Engineering Corp........... 2406 ACE Technology.......... 1949 Actipass Co. Ltd........... 2251 Advance Reproductions Corp........... 2404 Advanced Control Components.......... 2519 Advanced Power Technology RF.......... 1148 Advanced...
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