An ISM band transceiver chip for digital spread spectrum communication

This paper discusses a transceiver chip operating in the Industrial, Scientific and Medical (ISM) band, 902MHz to 928MHz, developed for use in digital cordless telephones for the United States. The design has been fabricated on GPS' HGC process. Design objectives included low noise figure and distortion, low system cost and low current consumption from a 2.7V supply. Emphasised in this paper are the circuits which enabled the device to meet the required system specifications.