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Industry News

A Temperature Dependent PIN Diode Model for Simple Temperature Invariant Attenuator Circuits

In this article a temperature dependent equivalent circuit of a forward-biased PIN diode is discussed. Using this equivalent circuit, the temperature behavior of a PIN diode attenuator circuit is analyzed and test results are presented. A novel control circuit is also offered for temperature invariant variable attenuation over a...
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The Effect of High Stability Reference Oscillators on System Phase Noise

Highly accurate microwave systems derive their frequency stability from lower frequency reference oscillators, crystals or atomic standards. The resulting phase noise is, ideally, the lower frequency reference oscillator noise multiplied by 20 log N, where N is the frequency multiplication factor. In microwave systems, this factor can be very...
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New Products

New Waves: RF Components & Systems
Power Amplifier for CDMA Handsets This RF power amplifier (RMPA0965) is optimized for CDMA2000-1X applications in the 824 to 849 frequency band. It has single positive-supply operation, low power and shutdown modes, and provides 40% CDMA mode efficiency at 28 dBm average power output. Its high/low power modes optimize...
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Around the Circuit

Industry News Agilent Technologies , Boeblingen, Germany, announced its 100th design win for its film bulk acoustic resonator (FBAR) duplexer and full band transmit filter. These devices are designed into nine of the 10 code division multiple access (CDMA) phone manufacturers’ handsets for the US market. The Agilent ACMD-7401...
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New Literature

LTCC Design Guide This design guide is for advanced electronic packages produced with co-fire multi-layer ceramic technology (LTCC). The guide includes a basic process overview and ceramic specifications for HTCC and AlN to assist in materials selection. Structural and metallization interconnect capabilities are shown with appropriate tolerances. AdTech Ceramics...
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Software Update

Automated Tuner System Software Maury Microwave Corp. is releasing the latest software, MT993 version 4.0 for its automated tuner system. Key features of version 4.0 include an improved GUI, significant functional enhancements, complete migration and support for ATN systems, and a comprehensive DLL kit. This release continues to provide...
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Lockheed Martin to Compete for Integrated Wireless Network Contract

Lockheed Martin has been invited to compete for the next phase of the Integrated Wireless Network (IWN). IWN will provide secure, interoperable nationwide wireless communications for federal agents and officers and allow multi-agency operations between the Department of Justice, Homeland Security and Treasury. The final contract is potentially worth...
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