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Semiconductors / Integrated Circuits

Designing a Bluetooth Transceiver in RF CMOS

Presentation of a design methodology used to facilitate the rapid prototyping and design of an RFIC
February 1, 2002
Technical Feature Designing a Bluetooth Transceiver in RF CMOS Bob Koupal and Marshall Wang Signia Technologies Milpitas, CA Cory Edelman Agilent Technologies Westlake Village, CA The design of a 2.4 GHz Bluetooth transceiver RFIC in CMOS requires careful verification of key performance criteria at all stages of the design...
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A New Type of Amplitude Equalizer for In-band Flatness Improvement

Presentation of a cascade amplitude equalizer used for improving the performance of a bandpass filter frequency response in cellular band
February 1, 2002
Technical Feature A New Type of Amplitude Equalizer for In-band Flatness Improvement There is a growing need in modern communication systems for low cost bandpass filters of small size, high selectivity and flat passband response in order to meet the demands for inter-channel power balance, and to avoid interference....
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Intermodulation Products for a Mixer Subjected to a Multi-carrier Signal

Use of a nonlinear mixer model to demonstrate how a transient simulation is used to predict the behavior of intermodulation products in a multi-carrier environment
February 1, 2002
Technical Feature Intermodulation Products for a Mixer Subjected to a Multi-carrier Signal Applying a multi-carrier signal to a mixer leads to a large range of intermodulation products. To perform a link budget of a multi-carrier transmit-receive system, it is important to predict the location and magnitude of those intermodulation...
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Externally Induced VCO Phase Noise

Description of the degradation of voltage-controlled oscillator phase noise due to noise on tuning and supply lines
February 1, 2002
Tutorial Externally Induced VCO Phase Noise This article describes the degradation of VCO phase noise due to noise on tuning and supply lines, particularly from tuning source resistance and supply voltage regulators. Dennis Colin Micronetics Wireless Hudson, NH VCOs, especially low noise wideband units, are extremely sensitive voltage-to-frequency converters,...
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Technology and Innovation in Single Layer Capacitors

Introduction to the buried single layer capacitor,™ a technologically advanced device manufactured for high frequency microwave applications
February 1, 2002
Application Note Technology and Innovation in Single Layer Capacitors Lambert Devoe and Alan Devoe Presidio Components Inc. San Diego, CA Single layer capacitors have been manufactured for many years for high frequency microwave applications. The simple parallel plate structure has advantages over multi-layer capacitors up to gigahertz frequencies due...
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A Mobile Ultra-low Phase Noise Sapphire Oscillator

Introduction to a low noise fixed-frequency X-band sapphire cavity oscillator
January 1, 2002
Product Feature A Mobile Ultra-low Phase Noise Sapphire Oscillator Poseidon Scientific Instruments Pty Ltd. Fremantle, Western Australia Radar, communications, and test and measurement designers require ever-improving phase noise performance in their master oscillator. For mobile system success, ultra-low phase noise performance must be coupled with exceptional immunity to vibration...
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2.5 V GaAs pHEMT Switches for GSM Handsets

A new line of 2.5 V GaAs pHEMT switches for GSM handsets is featured
January 1, 2002
Cover Feature 2.5 V GaAs pHEMT Switches for GSM Handsets M/A-COM Lowell, MA A new line of robust GaAs pHEMT switches for operation in 2.5 V GSM handsets has been developed. These switches feature performance that is unrivaled in the industry for harmonics at 2.5 V in addition to...
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A CMOS-based Front-end Downconverter for GPS Applications

Description of a CMOS-based front-end downconverter used to downconvert incoming satellite signals from 1.575 GHz to an intermediate frequency of 1.023 MHz
January 1, 2002
Product Feature A CMOS-based Front-end Downconverter for GPS Applications Valence Semiconductor Irvine, CA The industry is striving for single-chip Global Positioning System (GPS) designs given the limited real estate available within cell phones, personal digital assistants (PDA) and other consumer electronic devices. Since GPS designs are typically comprised of...
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SOI CMOS Technology For RF System-on-chip Applications

Overview of current advances in silicon-on-insulator (SOI) CMOS technology, including reduction in cross-talk between RF and digital circuits and integration of high quality passive elements
January 1, 2002
Technical Feature SOI CMOS Technology For RF System-on-chip Applications CMOS technology is one of the most promising choices for RF applications. Its highly integrated nature provides true RF system-on-chip integration. Silicon-on- insulator (SOI) CMOS offers specific additional design advantages that include a significant reduction in cross-talk between RF and...
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Performing Transient Analysis on PLL Frequency Synthesizers

Use of system-level simulation tool with flexible behavorial modeling capability to simulate and enhance the performance of a wireless PLL circuit
January 1, 2002
Technical Feature Performing Transient Analysis on PLL Frequency Synthesizers A PLL can be considered a subsystem within a larger communications system, so it is appropriate to analyze this type of network with the help of a system-level simulator. The use of flexible behavioral models within the simulator allows only...
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