Frequency hopping communication system

Details Frequency hopping communication system Frequency hopping communication system

1968-08-01

1980-03-11

Birmiel, Howard A.

Pulse or digital communications

Repeaters

Testing

375 38, 375 46, 375 62, 375 67, 325145, H04K 100

Patent

active

041930304

ABSTRACT:
A signal modulated with information is hopped to discrete frequencies and its phase is selected to be 0.degree. or 180.degree. in each frequency hop interval under control of a pseudo noise binary code signal produced by a code generator. The discrete frequencies are generated in a binary frequency synthesizer and the phase is selected by a balanced modulator. One embodiment is a transceiver employing a single code generator for both transmission and reception. In another embodiment, a code generator is employed at the transmitter and another code generator is employed at the receiver of a communication system. In each embodiment, acquisition circuitry is employed to synchronize the code signal to the received frequency hopped and phase selected signal for synchronous detection of the information.

REFERENCES:
patent: 3223779 (1965-12-01), McFarlane
patent: 3384822 (1968-05-01), Miyagi
patent: 3447085 (1969-05-01), De Haas et al.
patent: 3493866 (1970-02-01), Miller
patent: 3706933 (1972-12-01), Bidell et al.
patent: 3824468 (1974-07-01), Zegers et al.

Affiliated with

Also associated with

Rating

Frequency hopping communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency hopping communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency hopping communication system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2002910