Time domain radio transmission system

Patent 4743906 Issued on May 10, 1988. Estimated Expiration Date:

June 3, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3175214

3195130

3423754

3631351

3680100

3806795

Pulse radar altimeters
Patent #: 4241346
Issued on: 12/23/1980
Inventor: Watson

Spread spectrum radar
Patent #: 4443799
Issued on: 04/17/1984
Inventor: Rubin

Spread spectrum radio transmission system Patent #: 4641317
Issued on: 02/03/1987
Inventor: Fullerton

Inventor

Fullerton, Larry W.

Assignee

Phillips; Charles A.

Application

No. 06/870177 filed on 06/03/1986

US Classes:

342/27, PRESENCE DETECTION ONLY342/21, BASE BAND SYSTEM375/130, SPREAD SPECTRUM375/256PULSE TRANSMISSION VIA RADIATED BASEBAND

Examiners

Primary: Blum, Theodore M.
Assistant: Gregory, Bernarr E.

Attorney, Agent or Firm

Phillips; C. A.

International Classes

H04B 14/02 (20060101)
H01Q 21/06 (20060101)
H01Q 9/28 (20060101)
H01Q 9/04 (20060101)

Abstract

A communications system wherein there is employed a signal mixer in which a received signal is multiplied by a template signal, and then the output of the mixer is integrated. By this process, usable signals are obtained which would be otherwise obscured by noise.

Other References

Skolnik, Intro. to Radar Systems; pp. 375-376; (McGraw-Hill, 1980)
Bennett et al., "Time-Domain Electromagnetics and Its Applications," Proceedings of the IEEE, vol. 66, No. 3, Mar. 1978
Cook, J. C., "Monocycle Radar Pulses As Environmental Probes," Institute of Science and Technology, The University of Michigan