Power divider

Patent metadata

Field	Value
Publication number	US-11848476-B2
Application number	US-202117482016-A
Country	US
Kind code	B2
Filing date	Sep 22, 2021
Priority date	Jun 25, 2021
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A power divider includes an input capacitor, and first and second transmission lines (TLs). The first TL includes an input portion (IP), a transmission portion (TP) and an output portion (OP). The second TL includes a TP and an OP. The IP is for receiving an input signal, and is connected to the TPs of the first and second TLs. For each of the first and second TLs, the TP has a length that is one-twelfth of a target wavelength, and is connected to the OP. The OPs of the first and second TLs are for cooperatively outputting a pair of output signals which are in-phase and each of which has a frequency equal to that of the input signal. The input capacitor is connected between ground and the IP.

First claim

What is claimed is:

1. A power divider configured to operate in a frequency range around and covering a target frequency, said power divider comprising:
a first transmission line including an input portion, a first transmission portion and a first output portion, each of said input portion, said first transmission portion and said first output portion having a first terminal, and a second terminal that is distal from said first terminal of said input portion, said first terminal of said input portion being for receiving an input signal, said second terminal of said input portion being connected to said first terminal of said first transmission portion, said second terminal of said first transmission portion being connected to said first terminal of said first output portion, said first transmission portion having a length that is one-twelfth of a target wavelength corresponding to the target frequency;
a second transmission line including a second transmission portion and a second output portion, each of said second transmission portion and said second output portion having a first terminal, and a second terminal that is distal from said first terminal of said input portion, said second terminal of said input portion being further connected to said first terminal of said second transmission portion, said second terminal of said second transmission portion being connected to said first terminal of said second output portion, said second terminal of said first output portion and said second terminal of said second output portion being for cooperatively outputting a pair of output signals which are in-phase and each of which has a frequency equal to that of the input signal, said second transmission portion having a length that is one-twelfth of the target wavelength;
an input capacitor electrically connected between ground and said second terminal of said input portion;
a first output capacitor;
an output resistor; and
a second output capacitor;
wherein said first output capacitor, said output resistor and said second output capacitor are sequentially connected in series between said first output portion and said second output portion.

2. The power divider of claim 1 , wherein:
said first transmission portion and said second transmission portion are disposed in line symmetry relative to each other; and
said first output portion and said second output portion are disposed in line symmetry relative to each other.

3. The power divider of claim 1 , wherein:
said first transmission portion is configured as a circular spiral in one of clockwise and counterclockwise directions; and
said second transmission portion is configured as a circular spiral in the other of clockwise and counterclockwise directions.

4. The power divider of claim 3 , wherein:
arc segments of said first transmission portion and said second transmission portion are concentric, and radially adjacent ones of said arc segments are arranged at uniform spacing from each other and alternate between being part of said first transmission portion and being part of said second transmission portion; and
said first output portion and said second output portion are parallel to each other.

5. The power divider of claim 1 , wherein:
said first transmission portion is configured as an arc extending in a first direction; and
said second transmission portion is configured as an arc extending in a second direction that is opposite to the first direction.

6. The power divider of claim 5 , wherein:
the first direction is a clockwise direction; and
the second direction is a counterclockwise direction.

7. The power divider of claim 1 , wherein said first transmission portion and said second transmission portion establish reversed-phase electromagnetic coupling with each other.

8. A power divider configured to operate in a frequency range around and covering a target frequency, said power divider comprising:
a first transmission line including an input portion, a first transmission portion and a first output portion, each of said input portion, said first transmission portion and said first output portion having a first terminal, and a second terminal that is distal from said first terminal of said input portion, said first terminal of said input portion being for receiving an input signal, said second terminal of said input portion being connected to said first terminal of said first transmission portion, said second terminal of said first transmission portion being connected to said first terminal of said first output portion, said first transmission portion having a length that is one-twelfth of a target wavelength corresponding to the target frequency;
a second transmission line including a second transmission portion and a second output portion, each of said second transmission portion and said second output portion having a first terminal, and a second terminal that is distal from said first terminal of said input portion, said second terminal of said input portion being further connected to said first terminal of said second transmission portion, said second terminal of said second transmission portion being connected to said first terminal of said second output portion, said second terminal of said first output portion and said second terminal of said second output portion being for cooperatively outputting a pair of output signals which are in-phase and each of which has a frequency equal to that of the input signal, said second transmission portion having a length that is one-twelfth of the target wavelength; and
an input capacitor electrically connected between ground and said second terminal of said input portion,
wherein said first transmission portion is configured as a circular spiral in one of clockwise and counterclockwise directions, and
wherein said second transmission portion is configured as a circular spiral in the other of clockwise and counterclockwise directions.

9. The power divider of claim 8 , wherein:
said first transmission portion and said second transmission portion are disposed in line symmetry relative to each other; and
said first output portion and said second output portion are disposed in line symmetry relative to each other.

10. The power divider of claim 8 , wherein:
arc segments of said first transmission portion and said second transmission portion are concentric, and radially adjacent ones of said arc segments are arranged at uniform spacing from each other and alternate between being part of said first transmission portion and being part of said second transmission portion; and
said first output portion and said second output portion are parallel to each other.

11. The power divider of claim 8 , wherein said first transmission portion and said second transmission portion establish reversed-phase electromagnetic coupling with each other.

12. A power divider configured to operate in a frequency range around and covering a target frequency, said power divider comprising:
a first transmission line including an input portion, a first transmission portion and a first output portion, each of said input portion, said first transmission portion and said first output portion having a first terminal, and a second terminal that is distal from said first terminal of said input portion, said first terminal of said input portion being for receiving an input signal, said second terminal of said input portion being connected to said first terminal of said first transmission portion, said second terminal of said first transmission portion being connected to said first terminal of said first output portion, said first transmission portion having a length that is one-twelfth of a target

Assignees

• Univ Nat Chi Nan

Inventors

• Lin Yo-Sheng
• LAN Kai-Siang
• Chen bo-shun

Classifications

• H01P5/16 Primary

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