Waveguide-to-microstrip transition

Details Waveguide-to-microstrip transition Waveguide-to-microstrip transition

Filed on

1985-01-31

Date issued

1987-03-17

Examiner

Gensler, Paul

Patent Class

Wave transmission lines and networks

SubClass

Coupling networks

SubSubClass

Balanced to unbalanced circuits

Other Related Categories

333 34, H01P 5107

Type

Patent

Status

active

Patent number

046511156

Description

ABSTRACT:
A waveguide-to-coax-to-microstrip transition includes a rectangular waveguide portion having a ridged impedance transformer attached to the lower wide wall. The waveguide portion is closed off by a conductive wall through an aperture in which the center conductor of a coaxial transmission-line passes. A ridge extension isolated from all four walls of the rectangular waveguide couples the ridge to the center-conductor of the coax. For broadbanding, a glass plate is located between the ridge extension and the upper wide wall. The strip conductor of a microstrip transmission-line is connected to the center conductor of the coaxial transmission-line. The plane of the dielectric plate of the microstrip may be oriented parallel to the narrow wall of the rectangular waveguide to achieve high packing density.

REFERENCES:
patent: 2721939 (1955-10-01), Hershfield et al.
patent: 3105946 (1963-10-01), Beljers et al.
patent: 3265995 (1966-08-01), Hamasaki
patent: 3478282 (1969-11-01), Smith
patent: 3737812 (1973-06-01), Gaudio et al.
patent: 3758886 (1973-09-01), Landry et al.
patent: 4346355 (1982-08-01), Tsukii
patent: 4349790 (1982-09-01), Landry
Title: "Waveguide-to-Microscript Transition Uses Evanescent Mode" Published in: Microwaves and RF Magazine, Author: Bharj et al-Date: Jan. 1984, pp. 99, 100 & 134.
Title: "Ridge Waveguide Used in Microscrip Transition" Published in: Microwaves and RF Magazine, Author: Moochalla et al, Published: Mar. 1984, pp. 149-152.

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