Polarization agile antenna

Details Polarization agile antenna Polarization agile antenna

2005-08-18

2010-02-23

Nguyen, Hoang V (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S742000, C343S867000

Reexamination Certificate

active

07667651

ABSTRACT:
A compact polarization agile antenna includes a dual-orthogonal loop structure which is excited by a single RF feed (21). The loop structure includes a pair of loops (8, 10), each loop is connected to ground (45) through a complex impedance via a solid state switch (41, 43). Current flows in the loop when the switch (41, 43) is closed. The switches (41, 43) and impedances (47, 49) in each leg are independently controlled. Additionally, the relative phase of the current in each leg can be controlled over a narrow bandwidth via a complex impedance for narrowband circular polarized applications. Using this approach, orthogonal linear, slant, or left-hand and right-hand circular polarizations can be generated.

REFERENCES:
patent: 4410891 (1983-10-01), Schaubert et al.
patent: 4644366 (1987-02-01), Scholz
patent: 5661494 (1997-08-01), Bondyopadhyay
patent: 5844525 (1998-12-01), Hayes et al.
patent: 5943016 (1999-08-01), Snyder, Jr. et al.
patent: 5977929 (1999-11-01), Ryken
patent: 6281847 (2001-08-01), Lee
patent: 6545630 (2003-04-01), Apa et al.
patent: 6680703 (2004-01-01), McConnell
Navsariwala, et al., “A Switched Polarization Dual Loop Antenna For 2.4 GHz ISM Band Applications”, Antennas And Propagation Society International Symposium, 2002, IEEE, vol. 4, Publication date Jun. 16-21, 2002, pp. 52-55.

Affiliated with

Also associated with

Rating

Polarization agile antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4178716