Electro optical microwave communications system

Details Electro optical microwave communications system Electro optical microwave communications system

2006-08-15

2006-08-15

Vanderpuye, Kenneth (Department: 2613)

Optical communications

Receiver

Heterodyne

Reexamination Certificate

active

07092645

ABSTRACT:
A wideband communications system uses a photomixer, a radio frequency (RF) mixer, and an antenna. The photomixer is comprised of high speed phototransistors that are illuminated by two laser beams. The laser beams are generated by two lasers, one tunable, and conveyed to the photomixer via fiber optic cables. The two beams are mixed by the photomixer to generate a radio heterodyne signal that is mixed with antenna signals to generate an intermediate frequency (IF) signal based on the differences of the generated heterodyne frequency and the antenna signals. Conventional fiber optic means may be used to convey the IF signals, along with the fiber optic cables to the photomixer, to and from a remote RF head located at some distance from the rest of the communications system to overcome losses in transmission lines.

REFERENCES:
patent: 3970839 (1976-07-01), Javan
patent: 5003625 (1991-03-01), Khoe
patent: 5293170 (1994-03-01), Lorenz et al.
patent: 5339184 (1994-08-01), Tang
patent: 5526158 (1996-06-01), Lembo
patent: 5663639 (1997-09-01), Brown et al.
patent: 5687261 (1997-11-01), Logan
patent: 5710651 (1998-01-01), Logan, Jr.
patent: 5796506 (1998-08-01), Tsai
patent: 6493131 (2002-12-01), Tarng et al.
“Fiber-optic antenna remoting for multisector cellular cell sites”, Tang, D, Communications, 1992. ICC 92, Conference record, SUPERCOMM/ICC '92, Discovering a New World of Communications. IEEE International Conference on (Jun. 14-18, 1992).

Affiliated with

Also associated with

Rating

Electro optical microwave communications 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 Electro optical microwave communications system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro optical microwave communications system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3707027