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TECHNICAL FEATURE DC, LINEAR AC AND NONLINEAR AC STABILITY ANALYSIS USING BIFURCATION AND NYQUIST THEORY JAKE GOLDSTEIN AND MEHDI SOLTAN Xpedion Design Systems Inc. Santa Clara, CA Designing power and low noise amplifiers, gain blocks, multipliers and oscillators for modern communication systems requires delicate trade-offs between various design specifications...

TECHNICAL FEATURE MODULATION IMPERFECTIONS IN IS54/136 DUAL-MODE CELLULAR RADIO Abstract: Nonideal in-phase and quadrature (IQ) calibration circuits on one hand, and the synthesizer's phase noise spurious response and carrier leakage on the other, affect modulation quality by degrading modulation parameters such as error vector magnitude (EVM), spectral mask and...

DC and Pulsed IV Characteristics of GaAs MESFET Devices New measurement procedures using a DC and pulsed IV characterization system illustrate the significant effect that the thermal and frequency dispersion phenomena in GaAs MESFETs have on the IV characteristics of the device. The new procedures presented enable the effects...

Duplexer Considerations for X-band T/R Modules A transmit/receive (T/R) module’s duplexer plays a critical role in determining a phased array’s reliability, radar cross section (RCS) and performance. Several different block diagrams are typically used to realize the duplexer, but many common configurations do not satisfy basic duplexer requirements. This...

Around the Circuit INDUSTRY NEWS Advanced technology product and service provider TRW Inc. and first-mile broadband engine supplier for e-business gateways Endgate Corp. have signed a definitive agreement to merge Endgate and TRW Milliwave Inc. , a wholly owned TRW subsidiary, to create Endwave Corp. The new company will...

New Literature Systems Approach Catalog This 20-page catalog describes a systems approach to wireless RF transmission lines, overviewing electrical, mechanical, system and supplier performance; transmission line cable; water migration; connectors; electrical performance; installation issues; RF systems; quality; and options. Product photographs are included. Andrew Corp., Orland Park, IL (800)...

Components Nonreflective/Absorptive Switch This variable rise time, high power (1 W), high isolation nonreflective/absorptive SPST switch operates from 500 MHz to 18 GHz (other frequencies are available) with the capability of adjusting the rise time in four discrete steps of 25, 50, 75 and 100 ns. Insertion loss is...

Amplifiers Broadband Test Amplifier The model 150W1000 broadband test amplifier offers 150 W minimum power and frequency response from 80 to 1000 MHz. The unit provides the extra margin of power needed when testing to International Electrotechnical Commission 10 V/m requirements at 3 m from 80 to 90 MHz....

Antenna 2.4 GHz Fiberglass Antenna The model MFB24010 industrial, scientific and medical band omnidirectional antenna provides stable 10 dBi gain performance over 2.4 GHz frequencies with an SWR of less than 1.5. The unit is vertically polarized and terminates in a type-N female connector. Other electrical features include an...

Integrated Circuits 868/915 MHz RF Transceiver Chip The model CC900 totally integrated RF transceiver chip is designed for use in the European 868 MHz and US 915 MHz short-range device RF bands. Offering high flexibility and integration, the unit also complies with all requirements for communication in all 868...