RF Technology Tradeoffs for Wireless Data Applications

Rapidly evolving wireless system standards and applications are placing demands on RF semiconductor manufacturers to produce highly specific and optimized RFIC solutions for specific growth segments including wireless data terminals. unent RF wireless connectivity standards used for LANs and WANs include cellular and PCS (Personal Communications Services) protocols such as GSM (Global System for Mobile Communications) and AMPS (Advanced Mobile Phone System), trunk radio systems such as RAM and...

An Enhancement Mode PHEMTfor Single Supply Power Amplifiers

To address the growing handset power amplifier needs for the emerging Personal Communications Services (PCS) markets, a 3-volt, single-supply, enhancement-mode pseudomorphic high-electron-mobility transistor E-PHEMT has been developed. The device exhibits + 33-dBm output power and 65 drain efficiency at 1.88 GHz. . CS telephone handsel manufacturers have hud to face some tough choices to find the most suitable technology for their output power amplifiers. Most manufacturers would prefer to use...

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-M-oday there are over 88 million subscribers of paging services throughout the world. By the year 2000, the number of subscribers is expected to grow to over 140 million. To meet this demand, pager manufacturers will need to produce over 30 million pagers per year. This makes pagers one of the Leading RF devices in production today. The design and testing of pagers from concept to production requires sophisticated test equipment. In addition to the typical RF measurements, a paging signal is...