Rf power combiner/divider

Patent metadata

Field	Value
Publication number	US-2023395962-A1
Application number	US-202318327389-A
Country	US
Kind code	A1
Filing date	Jun 1, 2023
Priority date	Jun 2, 2022
Publication date	Dec 7, 2023
Grant date	—

Abstract

An RF power combiner/divider that combines a plurality of inputs into a combined output and comprises an isolating circuit coupling the inputs to a common floating point is provided. The isolating circuit includes a grounded resonant cavity inside which transmission lines are arranged, each of the transmission lines having a first end respectively connected to one of the inputs and an opposite second end connected to a grounded resistor arranged outside of the resonant cavity. Each of the transmission lines is coupled to a coupling portion of the resonant cavity, one end of the coupling portion being connected to ground and an opposite end of the coupling portion forming the common floating point.

First claim

What is claimed is:

1 . An RF power combiner to combine N input signals into a single output signal, the RF power combiner comprising:
N input ports connected to a common output port through N impedance matching elements respectively and an isolating circuit coupling the N input ports to a common floating point, wherein the isolating circuit comprises a grounded resonant cavity inside which are arranged N transmission lines,
each of the N transmission lines having a first end connected to one of the N input ports and an opposite second end connected to a grounded resistor arranged outside of the resonant cavity,
each of said N transmission lines being coupled to a coupling portion of the resonant cavity,
one end of the coupling portion being connected to ground and an opposite end of the coupling portion forming the common floating point.

2 . The RF power combiner of claim 1 , wherein the resonant cavity has a cylindrical shape,
wherein the coupling portion has a cylindrical shape and is coaxial with the resonant cavity, and wherein the N transmission lines are arranged around the coupling portion and at a coupling distance from the coupling portion.

3 . The RF power combiner of claim 1 ,
wherein the resonant cavity has a parallelepiped shape, wherein coupling portion has a parallelepiped shape and is coaxial with the resonant cavity, and wherein the N transmission lines are arranged around the coupling portion and at a coupling distance from the coupling portion.

4 . The RF power combiner of claim 1 , wherein one or more ferrite rings are arranged inside the resonant cavity and around the N transmission lines.

5 . The RF power combiner of claim 1 ,
wherein the resonant cavity has a cylindrical shape, and wherein the N transmission lines are arranged radially inside the resonant cavity and at a coupling distance from the coupling portion.

6 . The RF power combiner of claim 1 , wherein the N impedance matching elements respectively comprise N elongated conductors arranged parallel to each other,
first ends of the N elongated conductors being respectively connected to the first end of the N transmission lines, and an opposite second end of said N elongated conductors being connected together and to the common output port.

7 . The RF power combiner of claim 1 , wherein a base of the resonant cavity comprises N through holes through which respectively pass electrical connections between the second end of the N transmission lines and the N grounded resistors.

8 . The RF power combiner of claim 1 , wherein the RF power combiner has a nominal operating frequency in the range of 1 MHz to 10 GHz.

9 . The RF power combiner of claim 1 , wherein the RF power combiner has a nominal output power in the range of 1 KW to 1 MW.

Assignees

• Ion Beam Appl Sa

Inventors

• Abs Michel

Classifications

• H01P5/16 Primary

  Conjugate devices, i.e. devices having at least one port decoupled from one other port · CPC title

• H01P7/06

  Cavity resonators · CPC title

• H01P5/12

  Coupling devices having more than two ports (H01P5/04 takes precedence) · CPC title