Title :
A high efficiency 835 MHz linear power amplifier for digital cellular telephony
Author :
Koch, M.J. ; Fisher, R.E.
Author_Institution :
AT&T Bell Lab., Whippany, NJ, USA
Abstract :
The authors describe an approach to linear power amplification for digital cellular telephony which exploits the high efficiency of a class-C amplifier. An average efficiency exceeding 50%, with third-order intermodulation products 30 dB down, has been demonstrated. Low cost, moderate complexity, conventional RF technology was used in the amplifier circuitry. A block diagram of the 835 MHz linear power amplifier is presented
Keywords :
cellular radio; digital radio systems; power amplifiers; radiotelephony; ultra-high-frequency amplifiers; 835 MHz; UHF; cellular radio; class-C amplifier; digital cellular telephony; high efficiency; linear power amplifier; third-order intermodulation products; Amplitude modulation; Circuits; Digital modulation; High power amplifiers; Pulse width modulation; Quadrature amplitude modulation; Radio frequency; Radiofrequency amplifiers; Telephony; Voltage;
Conference_Titel :
Vehicular Technology Conference, 1989, IEEE 39th
Conference_Location :
San Francisco, CA
DOI :
10.1109/VETEC.1989.40042
