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Industry News

An Affordable Harmonic Load Pull Setup

Programmable mm-wave hamonic and fundamental/harmonic combination tuners that operate from 1.6 to 33 GHz
October 1, 1998
An Affordable Harmonic Load Pull Setup Focus Microwaves Inc. Ville St. Laurent, Quebec, Canada Since the early days of semiconductor amplifier design when bipolar transistors were used, it has been common knowledge that short-circuiting the second and third harmonic frequencies with the correct phase at the output of a...
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A Flexible Upconverter/Signal Generator to Support Communication and Radar Systems

A state-of-the-art microwave upconverter/signal source covering the 0.01 to 20 GHz frequency range with east tuning and low phase noise
October 1, 1998
A Flexible Upconverter/Signal Generator to Support Communication and Radar Systems Communication Solutions Inc. Baltimore, MD As modulation formats become more complex and communication and radar systems push the edge of technology, timely and cost-effective maintenance of these systems requires sophisticated test equipment. Wider bandwidth, AM and FM modulation, and...
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Third-generation Wireless Test Equipment Requirements

New technology enhancements that will be found in third-generation wireless systems and the equipment needed to evaluate these designs
October 1, 1998
Third-generation Wireless Test Equipment Requirements Rob Van Brunt Telecom Analysis Systems Inc. Eatontown, NJ Although the technology rollout is still several years away, development of third-generation (3G) wireless systems is well under way. During this critical development phase, manufacturers are making strategic decisions on the most appropriate modulation, protocol...
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Current Techniques for Tuning Dielectric Resonators

Advantages and disadvantages of the various electronic tuning techniques for dielectric resonators
October 1, 1998
Current Techniques for Tuning Dielectric Resonators Electronic tuning of dielectric resonators over a relatively wide range while also preserving their characteristics is highly desirable, especially for use in nonaccessable systems such as airborne or spaceborne systems or in areas of high sophistication such as cellular radio systems. This article...
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The Age of the Precision Oscillator: The Role of the TCXO and the DCXO

Temperature-compensated crystal oscillators (TCXO) and digitally compensated crystal oscillators (DCXO), which feature high stability and are good candidates for use as precision reference oscillators in various applications
October 1, 1998
The Age of the Precision Oscillator: The Role of the TCXO and DCXO Bill Jennewein M-tron Industries Inc. Yankton, SD The need for quality, high precision timing devices is increasing daily. The heart of all communications is linked directly to a stable and dependable source of frequency control. Computer...
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COMPONENTS

October 1, 1998
COMPONENTS SP4T Nonreflective Switch The model AS115-61 high isolation, SP4T nonreflective switch operates with 0 and -3 V or -5 V over the DC to 2 GHz frequency range. The switch delivers low insertion loss of 0.7 dB at 0.9 GHz with high isolation of 50 dB at 0.9...
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MATERIALS

October 1, 1998
MATERIALS Low Loss Dielectric Materials The ECCOSTOCK" series low loss dielectric materials for microwave applications feature dielectric constants ranging from 1.04 to 30 with loss tangents of < 0.002. The material is effective in antennas as a lens and in patch antennas as the spacer dielectric. It is also...
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SYSTEM

October 1, 1998
SYSTEM 800 MHz Data Transceiver The model DT800 800 MHz data transceiver operates over a frequency range of 806 to 866 MHz with an operating temperature range of -30° to +60°C. Additional features include a 25 W output power, forward error correction, data interleaving for burst error protection, high...
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ANTENNAS

October 1, 1998
ANTENNAS Cellular/GSM Low Profile Patch Antenna The model S8248P12NF cellular/Global System for Mobile communications (GSM) antenna features a low profile design for minimum visual impact for discreet antenna installations. The unit is engineered with high quality etched copper circuitry to improve cellular service quality, decreasing both interference and lost...
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AMPLIFIERS

October 1, 1998
  AMPLIFIERS Broadband, Small-signal Amplifier The model PE1-38-0218-12/-6V-SFF 2 to 18 GHz amplifier is capable of gains of more than 40 dB. The unit's noise figure is 5.5 dB (max) from 2 to 14 GHz and 6 dB (max) from 14 to 18 GHz. SWR is 2 (max), P1dB...
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