Waveguide module comprising a waveguide on a metal jig, where the metal jig includes a trench structure with a radio wave absorber disposed therein

Patent metadata

Field	Value
Publication number	US-12401105-B2
Application number	US-202318127075-A
Country	US
Kind code	B2
Filing date	Mar 28, 2023
Priority date	Apr 8, 2022
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

Provided is a waveguide module for improving insertion loss and return loss. The waveguide module includes a metal jig including a waveguide through which a radio wave is transmitted and received formed therein, a chip disposed on the waveguide formed in the metal jig and including a plurality of circuits that is configured to transmit and receive radio waves inside the waveguide, and a circuit board configured to provide a bias used for an operation of the chip, wherein the metal jig includes a trench structure to dispose a radio wave absorber on a side surface of the chip in a direction crossing the waveguide.

First claim

What is claimed is:

1. A waveguide module comprising:
a metal jig comprising a waveguide through which a radio wave is transmitted and received formed therein;
a chip disposed on the waveguide formed in the metal jig and comprising a plurality of circuits that is configured to transmit and receive radio waves inside the waveguide; and
a circuit board configured to provide a bias used for an operation of the chip,
wherein the metal jig comprises a trench structure to dispose a radio wave absorber on a side surface of the chip in a direction crossing the waveguide,
wherein an upper height of the radio wave absorber is formed to decrease as the radio wave absorber approaches a waveguide transition and formed to increase as the radio wave absorber distances from the waveguide transition.

2. The waveguide module of claim 1 , wherein the radio wave absorber is produced by processing a radio wave absorbing structure to fit the trench structure or by curing a radio wave absorbing paste to correspond to the trench structure.

3. The waveguide module of claim 1 , wherein the circuit board is connected to an upper surface of the radio wave absorber through a conductive adhesive.

4. The waveguide module of claim 1 , further comprising:
a single-layer capacitor (SLC) disposed on an upper surface of the radio wave absorber,
wherein the SLC is connected to the chip and the circuit board through a wire-bonding.

5. The waveguide module of claim 1 , wherein a space between the radio wave absorber disposed on the side surface of the chip and the trench structure is filled with a conductive adhesive or a radio wave absorbing adhesive.

6. A waveguide module comprising:
a metal jig comprising a waveguide through which a radio wave is transmitted and received formed therein, and a trench structure to dispose a radio wave absorber in a direction crossing the waveguide, formed therein;
a chip disposed on the waveguide formed in the metal jig and comprising a plurality of circuits that is configured to transmit and receive radio waves inside the waveguide; and
a circuit board configured to provide a bias used for an operation of the chip,
wherein an upper height of the radio wave absorber disposed in the trench structure is determined to be less than an upper height of the chip,
wherein the upper height of the radio wave absorber is formed to decrease as the radio wave absorber approaches a waveguide transition and formed to increase as the radio wave absorber distances from the waveguide transition.

7. The waveguide module of claim 6 , wherein a space between the radio wave absorber disposed on a side surface of the chip and the trench structure is filled with a conductive adhesive or a radio wave absorbing adhesive.

8. The waveguide module of claim 6 , wherein the radio wave absorber is produced by processing a radio wave absorbing structure to fit the trench structure or by curing a radio wave absorbing paste to correspond to the trench structure.

9. The waveguide module of claim 6 , wherein the circuit board is connected to an upper surface of the radio wave absorber through a conductive adhesive.

10. The waveguide module of claim 6 , further comprising:
a single-layer capacitor (SLC) disposed on an upper surface of the radio wave absorber,
wherein the SLC is connected to the chip and the circuit board through a wire-bonding.

11. A waveguide module comprising:
a metal jig comprising a waveguide through which a radio wave is transmitted and received formed therein;
a chip disposed on the waveguide formed in the metal jig and comprising a plurality of circuits that is configured to transmit and receive radio waves inside the waveguide; and
a circuit board configured to provide a bias used for an operation of the chip,
wherein the metal jig comprises a trench structure to dispose a metal structure on a side surface of the chip in a direction crossing the waveguide, and
wherein an upper height of the metal structure disposed in the trench structure is less than an upper height of the chip, and formed to decrease as the metal structure approaches a waveguide transition and formed to increase as the metal structure distances from the waveguide transition.

12. The waveguide module of claim 11 , wherein the metal structure is generated by processing a metal to correspond to the trench structure or by curing a conductive paste to correspond to the trench structure.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Sooyeon
• Kim Seung Hwan
• Cho Seung-Hyun

Classifications

• H01P11/003

  Manufacturing lines with conductors on a substrate, e.g. strip lines, slot lines · CPC title

• H05K5/04

  Metal casings · CPC title

• H01P1/264

  Waveguide terminations (H01P1/262 takes precedence) · CPC title

• H01P1/22

  Attenuating devices (dissipative terminating devices H01P1/26) · CPC title

• H01P1/162 Primary

  absorbing spurious or unwanted modes of propagation · CPC title