Communications: radio wave antennas – Antennas – Microstrip
Patent
1995-02-16
1996-05-21
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Microstrip
343725, 343770, H01Q 138, H01Q 1310
Patent
active
055194060
ABSTRACT:
A low profile polarization diversity planar antenna capable of effectively separating the horizontal and vertical polarization. The antenna combines a notch antenna (A) and a patch antenna (B) in a low profile structure. The notch antenna comprises a ground plate (10), a feed plate (20), and a radiator plate (30) which are stacked in a spaced relation. The radiator plate is shorted to the ground plate at its center and formed in its periphery with at least two radial notches (38). The feed plate carries feeder probes (27) each located adjacent to each one of the notches for feeding the notch antenna. The patch antenna comprises a patch (40) stacked above the radiator plate (30). The patch (40) is grounded at one portion thereof and has a feed point spaced from the grounded portion for feeding the patch antenna. The patch is grounded to the radiator plate and has a diameter smaller than the radiator plate. Thus, the notch antenna and the patch antenna have individual radiator elements with the radiator plate rendered as the ground plane for the patch antenna, the notch and patch antennas exhibit less mutual coupling so as to effectively separate horizontal polarization made by the notch antenna from vertical polarization by the patch antenna.
REFERENCES:
patent: 4903033 (1990-02-01), Tsao et al.
patent: 5043738 (1991-08-01), Shapiro et al.
patent: 5241321 (1993-08-01), Tsao
patent: 5270721 (1993-12-01), Tsukamoto et al.
patent: 5402136 (1995-03-01), Goto et al.
patent: 5448250 (1995-09-01), Day
patent: 5453751 (1995-09-01), Tsukamoto et al.
42nd Vehicular Technology Society Conference, vol. 1, May 1992, Denver, Colorado, US pp. 29-32, H. Arai et al `Flat diversity antenna at 900 Mhz for mobile telephone`.
IEEE Transactions on Vehicular Technology, vol. 40, No. 2, May 1991, "A Flat Energy Density Antenna System for Mobile Telephone" by Hiroyuki Arai, et al., pp. 483-486.
Arai Hiroyuki
Goto Naohisa
Tsukamoto Katsuya
Hajec Donald T.
Ho Tan
Matsushita Electric & Works Ltd.
LandOfFree
Low profile polarization diversity planar 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 Low profile polarization diversity planar antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low profile polarization diversity planar antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2041610