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Industry News

A Transmit Frequency Converter for LMDS Set Top Box Applications

A frequency converter module set suitable for use in set top boxes in local multipoint distribution system (LDMS) applications
January 1, 2000
A Transmit Frequency Converter for LMDS Set Top Box Applications Vari-L Company Inc. Denver, CO A frequency converter module set suitable for set top boxes used in local multipoint distribution system (LMDS) applications has been developed. The module set has been designed in accordance with the standards established by...
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A High Stability Phase-locked Source for QAM Radio Application

A new 9 to 13 GHz high stability, low noise phase- locked source that addresses the 155 Mbps data rate requirements of quadrature amplitude modulation (QAM) radios
January 1, 2000
A High Stability Phase-locked Source for QAM Radio Applications Microwave dB Newbury Park, CA Consumers have pressured service providers who, in turn, have pressured equipment manufacturers to design wireless communications systems that are more reliable while simultaneously demanding significantly higher data rates. This new generation of radios provides high...
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New Fractal Antennas for Compact and Versatile Telecommunication Services

Base station multiband antennas based on the fractal-shaped antenna concept that operate concurrently at the GSM 900 and GSM 1800 bands
January 1, 2000
New Fractal Antennas for Compact and Versatile Telecommunication Services Fractus SA Barcelona, Spain The wireless telecommunication market is constantly subjected to turbulent and rapid changes. Today’s telecom applications require total mobility as well as constant improvement toward the integration of multiple services. These features, accompanied by an ongoing cost...
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Design of an Ultralinear Wideband Feedforward Amplifier Using EDA Tools

An electronic design automation (EDA)-based method to design an ultralinear wideband feedforward amplifier in the 460 MHz grequency band
January 1, 2000
Technical Feature Design of an Ultralinear Wideband Feedforward Amplifier Using EDA Tools Jianyi Zhou, Limin Feng, Xiaowei Zhu and Wei Hong Please click here to view the pdf file of the Technical Feature...
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Microwave FET Oscillators: An Analytic Approach to Simplify Computer-aided Design

A simple analytic approach to microwave FET oscillator design that defines explicit expressions for optimum values of feedback elements through transistor Z parameters
January 1, 2000
Technical Feature Microwave FET Oscillators: An Analytic Approach to Simplify Computer-aided Design Andrey V. Grebennikov Please click here to view the pdf file of the Technical Feature...
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Phase Noise Theory and Measurements: A Short Review

Phase noise theory, phase noise modeling of a VCO and phase-locked loop source with a focus on practical considerations and the various methods used to measure phase noise
January 1, 2000
Tutorial Phase Noise Theory and Measurements: A Short Review Bar-Giora Goldberg Please click here to view the pdf file of the Tutorial...
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Polarization Diversity Antennas for Compact Base Stations

The use of diversity reception for mobile radio base stations and a comparison of space and polarization diversity techniques
January 1, 2000
Polarization Diversity Antennas for Compact Base Stations This article describes the use of diversity reception for mobile radio base stations and compares the performance of space and polarization diversity techniques. In urban areas polarization diversity offers performance that is generally comparable with that of space diversity. The compact three-antenna...
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A Review of the 1999 Wireless Workshop

A look back at the 1999 Wireless Workshop held October 24-27 in Gold Canyon, AZ
January 1, 2000
A Review of the 1999 Wireless Workshop Frank Bashore Microwave Journal Staff The 1999 Wireless Workshop was held October 24-27 in Gold Canyon, AZ. The workshop is designed to serve as a technical forum and discussion group for various engineering and technical representatives from leading companies involved in the...
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K-band Quadrature Mixers with Plastic-packaged Diodes

Two practical K-band, quadrature mixer designs using inexpensive. packaged semiconductor devices installed on conventional printed circuit boards
January 1, 2000
K-band Quadrature Mixers with Plastic-packaged Diodes Matjaz Vidmar University of Ljubljana, Slovenia Quadrature mixers (also known as IQ mixers) are important signal-processing components in radio transmitters (as vector modulators) and radio receivers (as image-reject mixers and/or demodulators) as well as other microwave equipment (phase-locked loops (PLL)). A quadrature mixer...
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A 76 to 77 GHz GMIC Mixer for Automotive Radar

The diode modeling and mixer design approach along with the measured results of a 76 to77 GHz mixer developed on a 127 µm-thick glass MIC for autonomous cruise control radar applications
January 1, 2000
A 76 to 77 GHz GMIC Mixer for Automotive Radar A 76 to 77 GHz mixer that uses flipped Hewlett-Packard HSCH-9401 Schottky diodes has been developed on a 127-µm-thick glass microwave integrated circuit (GMIC) for autonomous cruise control (ACC) radar applications. The design process for diode modeling and mixer...
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