Waveguide converter including a waveguide and antenna terminated by a terminal waveguide having an adjustable conductor plate

Patent metadata

Field	Value
Publication number	US-10050327-B2
Application number	US-201515129243-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Mar 27, 2014
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

Impedance optimization is difficult in microwave-band waveguide converters. To solve that problem, this waveguide converter is provided with the following: a waveguide provided so as to introduce microwaves to an antenna that performs input and output in a planar microwave circuit; a terminal waveguide that faces the aforementioned waveguide with the antenna interposed therebetween and connects to said waveguide so as to terminate same; and a conductor plate mounted so as to face the antenna. The conductor plate is electrically connected to at least part of the inside wall of the terminal waveguide.

First claim

The invention claimed is:

1. A waveguide converter, comprising;
a waveguide that introduces microwaves to an antenna that performs input and output in a planar microwave circuit,
a terminal waveguide that faces the waveguide with the antenna interposed therebetween and that terminates by being connected to the waveguide; and
a conductor plate mounted so as to face the antenna,
wherein the conductor plate is electrically connected to at least part of an inside wall of the terminal waveguide,
an adjustment mechanism for adjusting a distance between the conductor plate and the antenna,
wherein the adjustment mechanism is a plurality of concave portion formed on the inside wall of the terminal waveguide and engaging the conductor plate.

2. The waveguide converter of claim 1 , wherein an electrical path for the microwaves is not formed between the conductor plate and a terminal face of the terminal waveguide.

3. The waveguide converter of claim 1 , wherein the conductor plate is a short-circuited end with respect to the microwaves in the terminal waveguide.

4. A waveguide converter, comprising;
a waveguide that introduces microwaves to an antenna that performs input and output in a planar microwave circuit,
a terminal waveguide that faces the waveguide with the antenna interposed therebetween and that terminates by being connected to the waveguide; and
a conductor plate mounted so as to face the antenna,
wherein the conductor plate is electrically connected to at least part of an inside wall of the terminal waveguide,
an adjustment mechanism for adjusting a distance between the conductor plate and the antenna,
wherein the adjustment mechanism is a convex portion that is formed on a part of an inside wall of the terminal waveguide.

5. The waveguide converter of claim 4 , wherein the terminal waveguide includes an opening in the inside wall through which the conductor plate is taken out of the terminal waveguide.

6. A waveguide conversion method, comprising:
introducing microwaves toward an antenna performing input and output in a planar microwave circuit;
terminating the microwaves that pass through the antenna by a conductor plate and reflecting the microwaves; and
making a distance between the conductor plate and the antenna variable,
adjusting the distance between the conductor plate and the antenna by using a plurality of concave portion formed on an inside wall of a terminal waveguide and engaging the conductor plate.

Assignees

• Nec Corp

Inventors

• Orihashi Naoyuki

Classifications

• H01P1/062

  the relative movement being a rotation · CPC title

• H01P11/001

  Manufacturing waveguides or transmission lines of the waveguide type · CPC title

• H01P5/08

  for linking dissimilar lines or devices (H01P1/16, H01P5/04 take precedence; linking lines of the same kind but with different dimensions H01P5/02) · CPC title

• H01P11/002

  Manufacturing hollow waveguides · CPC title

• H01P5/04

  with variable factor of coupling · CPC title