Adaptive polarization combining system

Details Adaptive polarization combining system Adaptive polarization combining system

1989-09-06

1991-11-26

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

333 28R, 333 21A, H01Q 2106, H03H 500

Patent

active

050686682

ABSTRACT:
An adaptive polarization combining system automatically adjusts the polarization of a polarization diverse antenna to match that of the incoming RF signal, thereby maximizing the received signal-to-noise ratio. Signals from the orthogonally polarized ports of the antenna are passed through a variable combiner circuit which is adjusted to maximize the combined signal at a single output port. Sample signals from each antenna port are provided to a calibration circuit which obtains phase and amplitude information from the two orthogonally polarized received signals and uses this information to control the combiner circuit phase shifters to adapt the combiner circuit to the polarization of the received signals. Therefore, the combining system can rapidly adapt electronically to polarization changes in the received signals.

REFERENCES:
patent: 3523294 (1970-08-01), Okamura et al.
patent: 3943517 (1976-03-01), Vogt
patent: 4107678 (1978-08-01), Powell
patent: 4191926 (1980-03-01), Pontano et al.
patent: 4220923 (1980-09-01), Pelchat et al.
patent: 4268829 (1981-05-01), Baurle et al.
patent: 4280128 (1981-07-01), Masak
patent: 4283795 (1981-08-01), Steinberger
patent: 4293858 (1981-10-01), Hockham
patent: 4298873 (1981-11-01), Roberts
patent: 4310813 (1982-01-01), Yuuki et al.
patent: 4313220 (1982-01-01), Lo et al.
patent: 4369519 (1983-01-01), Yuuki et al.
patent: 4438530 (1984-03-01), Steinberger
patent: 4577330 (1986-03-01), Kavehrad
patent: 4606054 (1986-08-01), Amitay et al.
patent: 4644562 (1987-02-01), Kavehrad et al.
patent: 4723321 (1988-02-01), Saleh
patent: 4757319 (1988-07-01), Lankl
Alves et al., Arbitrary Polarization Microwave Receiver Applied to OTS Reception, Electronics Letters vol. 15; No. 20 9/27/79.
Lamberty et al., Interference Suppression Using an Adaptive Polarization Combiner; Proc. of 1987 Antenna Applications Symposium Allerton Park, Sep. 23-25, 1987 pp. 1-15.

Affiliated with

Also associated with

Rating

Adaptive polarization combining 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 Adaptive polarization combining system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive polarization combining system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2388454