Waveguide and microstrip lines mode transformer and receiving co

Details Waveguide and microstrip lines mode transformer and receiving co Waveguide and microstrip lines mode transformer and receiving co

1996-02-06

1998-07-14

Lee, Benny T.

Communications: radio wave antennas

Antennas

With lumped reactance for loading antenna

333 26, 333 21A, H01P 117, H01P 5107

Patent

active

057811610

ABSTRACT:
A mode transformer for a waveguide and microstrip lines capable of obtaining sufficient cross polarization isolation and a receiving converter comprising the same is provided. Transformers of horizontal and vertical polarized waves comprise orthogonal first and second microstrip lines and a circular waveguide. By placing a metal bar connected to the waveguide between the first and second microstrip lines, the metal bar has the ground potential which is the same as the potential of the circular input waveguide and the electric fields excited in the first and second microstrip lines have a polarity that move toward the direction of the metal bar, so that electric field coupling of the first and second microstrip lines may be avoided.

REFERENCES:
patent: 4827276 (1989-05-01), Fukuzawa et al.
patent: 4996535 (1991-02-01), Profera, Jr.
patent: 5374938 (1994-12-01), Hatazawa et al.
patent: 5440279 (1995-08-01), Kinoshita et al.
patent: 5463407 (1995-10-01), West et al.

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