Motorola Corporation

Honeywell International Inc.

Don Reginald Holcomb

Yogendra Y Sheoran

John Taylor Pearson

Arthur Jonathan Kline, Jr

John Raymond Nelson

James Robert Shaner

Ramalingam Nallur

Airfield guidance sign

A transponder including a receiver and a transmitter controlled by the output of the receiver, with the receiver including a first phase locked loop with a mixer and a voltage controlled oscillator supplying an output to a second phase locked loop including a switchable frequency divider connected to supply a low side injection signal to the mixer of the first loop in the first mode of operation and a high side injection signal to the mixer in the second mode of operation.

Dual mode receiver

In a tracking filter, which includes a conventional phase locked loop having a phase detector, a filter and a voltage controlled oscillator adapted to track a wanted signal and attenuate unwanted signals and noise from an incoming spectrum of signals, there is provided a phase modulator and an additional filter adapted to attenuate further the unwanted signals and the noise without degrading the ability of the loop to track the wanted signal.

Phase locked loop tracking filter having enhanced attenuation of

Growing community of inventors

Phoenix, AZ, United States of America

Don Reginald Holcomb