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GSM/GPRS quad band power amp includes antenna switch
Nov 1, 2004
Combining gallium arsenide (GaAs) power amplifier circuit with integrated passive devices (IPDs) and microvia high-density interconnect (HDI) technology,...

Quantifying system performance of GSM/GPRS PAs with differing levels of integration
Oct 1, 2004 By Mendy Ouzillou
The two key power amplifier metrics are power and efficiency. When comparing power amps with different levels of integration, the context of how the specifications are defined is important. The performance of the system solution is referenced to the antenna and battery, then distilled into one metric....

Bluetooth and WiFi integration: Solving co-existence challenges
Oct 1, 2004 By Jeffrey Wojtiuk
As popular wireless technologies like Bluetooth and WiFi are being integrated on common semiconductor substrates and printed circuit boards, this article looks at a number of system challenges that must be overcome to ensure proper interoperability with co-located Bluetooth and WiFi functionalities....

Using field-programmable analog to build adaptable RFID readers
Oct 1, 2004 By Tegid Roberts
Typical radio frequency identification reader design challenges include multistandard adoption, installation issues, high tag failure rate, and...

CMOS RF antenna switches offer new alternative
Oct 1, 2004
Implementing its proprietary ultrathin-silicon-on-sapphire (UTSi) CMOS, also known as UltraCMOS process, Peregrine Semiconductor has developed RF CMOS...

A miniature reader/active tag streamlines supply chain management
Sep 1, 2004 By Fred Mohamadi
This article describes the design of the proposed mini-RAT's hardware to enable implementation of a nesting architecture....

Active mixer resolves passive issues
Aug 1, 2004
While ultra-high frequency (UHF) and microwave passive mixers are known to deliver high linearity and signal-to-noise ratio performance, they require...

Designing military data-conversion systems involves multiple tradeoffs
Aug 1, 2004 By Mark Looney and Steve Reine
Converting RF signals to digital data that can be processed for a variety of system-level functions, analog-to-digital (ADC) and digital-to-analog converters...

Extending Benefits of 3-D Integration to Next-Generation Wireless Devices
Jun 1, 2004 By Bob Markunas
Three-dimensional integration provides a methodology to address many of the concerns confronting RF designers. Advances in 3-D can be extended to the RF front to integrate RF, analog and digital functions in miniature IC packages and overcome the roadblocks presented by process technology....

Effective IM2 estimation for two-tone and WCDMA modulated blockers in zero-IF
Apr 1, 2004 By Walid Y. Ali-Ahmad
As third-generation (3G) wireless networks are currently expanding in Japan (IMT-2000), in Europe (UMTS) and in the United States (CDMA 2000), the need...

Locator beacon design for victims in distress
Mar 1, 2004 By Fred Mohamadi
A multiband radar beacon locates victims in distress during search and rescue missions. The beacon can also help provide ordinance's accurate delivery...

Integration-by-parts: An approach to the RFIC market
Feb 1, 2004 By Dan Nobbe
A concept learned in freshman calculus, but now applied to wireless integrated circuits, is the classical approach Peregrine is taking to wireless integration....

Silicon integration with millimeter wave phased array antenna
Feb 1, 2004 By Fred Mohamadi
To achieve a reliable, efficient and high-speed Wireless LAN (WLAN, IEEE802.11) and wireless metropolitan area network (WMAN, IEEE802.16) a system must...

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