# US 9,520,653 B2 · Waveguide slot antenna

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- Number: US 9,520,653 B2
- Document ID: US9520653B2
- Status: Granted
- Kind: B2
- Application number: 14/805,046
- Filed: 2015-07-21
- Published: 2016-01-21
- Granted: 2016-12-13
- Earliest claimed: 2011-12-28
- Assignees: Toko, Inc.
- Applicants: Toko, Inc.
- Inventors: Kazuhisa Sano; Yukikazu Yatabe; Kazuhiro Ito
- Web page: https://patentgrep.com/patent/US9520653B2

## CPC

- H01Q 13/22: Longitudinal slot in boundary wall of waveguide or transmission line {(H01Q13/203 takes precedence)}
- H01P 3/12: Hollow waveguides (H01P3/20 takes precedence)
- H01P 3/16: Dielectric waveguides, i.e. without a longitudinal conductor
- H01Q 13/10: Resonant slot antennas
- H01Q 15/244: {converting a linear polarised wave into a circular polarised wave (guided wave H01P1/17)}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B)

## Abstract

A waveguide slot antenna utilizing a waveguide as a feeding line and having a linear slot provided in a wall of the waveguide, the waveguide slot antenna comprising a flat-shaped conductor plate which has a first through-hole formed in a shape approximately identical to that of the slot and provided at a position opposed to the slot, and a second through-hole provided at a position intersecting the first through-hole.

## Claims

### Claim 1

A waveguide slot antenna utilizing a waveguide as a feeding line and having a linear slot provided in a wall of the waveguide, the waveguide slot antenna comprising a flat-shaped conductor plate which has a first through-hole formed in a shape approximately identical to that of the slot and provided at a position opposed to the slot, and a second through-hole provided at a position intersecting the first through-hole.

### Claim 2 (depends on 1)

The waveguide slot antenna as defined in claim 1, wherein the conductor plate has a thickness which is 0.2 to 0.3 times a length of a wavelength of use.

### Claim 3 (depends on 2)

The waveguide slot antenna as defined in claim 2, wherein the second through-hole has a longitudinal length greater than a longitudinal length of the first through-hole.

### Claim 4 (depends on 3)

The waveguide slot antenna as defined in claim 3, wherein the waveguide is a hollow waveguide or a dielectric waveguide.

### Claim 5 (depends on 1)

An array antenna device comprising the waveguide slot antenna as defined in claim 1.