Browse Prior Art Database

RSSI CONTROLLED I.F. LIMITER WITH IMPROVED INTERMODULATION PERFORMANCE

IP.com Disclosure Number: IPCOM000005811D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2001-Nov-08

Publishing Venue

Motorola

Related People

Authors:
George Anderson Ed Callaway

Abstract

Large signals present in the receiver first i.f. stage may require limiting to avoid overdriving the i.f. amplifiers. In portable receivers this is usually done by placing a diode, typically a PIN or Schottky diode, in shunt with the crystal filters The diode conducts when the incoming i.f. signal is large enough to forward bias it, thereby limiting the signal (Figure 1).