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Industry News

A DC to 35 GHz mm-wave MMIC Package

A Di-Pak packge that offers a solution to testing die at functional RF power levels
A DC to 35 GHz mm-wave MMIC Package Dielectric Laboratories, a Dover Technologies company Cazenovia, NY One of the potentially gating issues for implementing MMIC die in high volume commercial and consumer markets is the determination of known good die. It is difficult to reliably RF test the die...
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A Miniature SPDT Switch for Hi-rel Space Applications

A single-pole, double-throw (SPDT) elctromechanical switch that provides a long awaitedsolution for miniaturizing space equipment
A Miniature SPDT Switch for Hi-rel Space Applications Dow-Key Microwave Corp. Ventura, CA The trend toward component miniaturization is not new; it has already become prevalent in the commercial industry, especially in the wireless sector. However, the space industry is more conservative and, although there is good reason to...
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A Low Cost, 1200 MHz Frequency Synthesizer

A new synthesizer that operates over the 1 to 1200 MHz frequency range and offers fast switching, low phase noise and a competitive pric is featured on this month's cover
A Low Cost, 1200 MHz Frequency Synthesizer Programmed Test Sources Inc. (PTS) Littleton, MA As wireless production expands, test systems requiring high performance LO sources are proliferating. To address the price pressures found in the wireless market, a new low cost synthesizer that features fast switching and low phase...
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Dual-band GSM/PCS Handset Antennas

A new dual-band antenna set that uses a descending- pitch helical configuration to overcome the problem of a helical antenna tuned and matched to the PCS at 1800 MHz that has too much of a capacitive component at GSM frequencies
Dual-band GSM/PCS Handset Antennas Ace Antenna Co. Chatsworth, CA Today's new cellular telephone must be capable of operating in two distinct frequency bands to be compatible with the various operating systems it is likely to encounter. As a result, the unit's single-handset antenna must perform efficiently and effectively within...
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A 2 kW Solid-state Pulse Amplifier

A stand-alone, 19-inch, rack-mount power amplifier system capable of amplifying RF pulses to a level in excess of 2000 W peak power with five percent duty cycle
A 2 kW Solid-state Pulse Amplifier Wavesat Te´le´com Inc. St-Laurent, Quebec, Canada The model WPA-129063-53PR solid-state power amplifier system is a stand-alone, 19" rack-mount unit capable of amplifying RF pulses to a level in excess of 2000 W peak power with five percent duty cycle (100 W average power)....
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Test Equipment Synchronization: Problems and Solutions

Issues to be dealt with while running CDMA tests as well as some suggested solutions
Technical Feature Test Equipment Synchronization: Problems and Solutions Boris Sheyer Please click here to view the pdf file of the Technical Feature...
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Testing of Smart Antenna Systems

Key tests that can be performed on switched beam systems, which are considered the simplest, but most popular, smart antenna technologies
Testing of Smart Antenna Systems Smart antenna systems must be tested to verify the various claims made by the system designer and manufacturer. The tests should be performed primarily to evaluate the most and least successful functions of the system under consideration. Extensive testing should also establish the best...
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Experimental Adaptive Nulling with a Genetic Algorithm

Application of a genetic algorithm with an experimental antenna for placing a null in the direction of an interference source
Experimental Adaptive Nulling with a Genetic Algorithm An adaptive antenna system rejects interference by placing a null in its antenna pattern in the direction of the interfering source. A single-element antenna needs at least one other element or some scattering object to form a null. Thus, adaptive antennas are...
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Broadside Radar Echoes from Wires and Strings

Simple formulas for calculating the broadside radar cross section of both metal wires and strings
Technical Feature Broadside Radar Echoes from Wires and Strings E.F. Knott, A.W. Reed and P.S.P Wei Please click here to view the pdf file of the Technical Feature...
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A Novel Tapered Slot PCS Antenna Array and Model

A modification to the conventional tapered slot aperature that results in improved SWR performance as well as an acute radiation pattern prediction of tapered slot antenna arrays
A Novel Tapered Slot PCS Antenna Array and Model An antenna array comprising multiple tapered slot radiators and its microstrip feed network has the capability to be etched on a single piece of thin dielectric circuit board, resulting in the relatively inexpensive mass production of a highly consistent product....
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