Browse Prior Art Database

INTEGRATED LOGIC TRANSLATOR AND RAMP CIRCUIT FOR GaAs POWER AMP

IP.com Disclosure Number: IPCOM000007269D
Original Publication Date: 1994-Oct-01
Included in the Prior Art Database: 2002-Mar-08
Document File: 2 page(s) / 83K

Publishing Venue

Motorola

Related People

Authors:
Tom Schiltz Bill Beckwith

Abstract

System specifications for digital cordless tele- phones require that some form of transmitter burst mask control be implemented to limit out-of-band spurious emissions. For systems that employ constant-envelope modulation schemes such as FSK, GMSK, and GFSK, the burst mask control is easily implemented by ramping the positive voltage sup- ply of the power amplifier in a controlled manner with a discrete power MOSFET.