US-12620683-B2 - Power divider

US12620683B2US 12620683 B2US12620683 B2US 12620683B2US-12620683-B2

Abstract

A power divider includes an input port, a first output port, a second output port, a first phase adjusting part, a second phase adjusting part, and a matching part, wherein: the first phase adjusting part is connected in series between the input port and the first output port, and is configured to adjust a phase of a first output signal output by the first output port; the second phase adjusting part is connected in series between the input port and the second output port, and is configured to adjust a phase of a second output signal output by the second output port; the matching part is connected in series between the first output port and the second output port, and is configured to match the first output port with the second output port; a phase difference between the first output signal and the second output signal is 180 degrees.

Inventors

Yu-Chih Chueh

Assignees

NANNING FULIAN FUGUI PRECISION INDUSTRIAL CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20240206

Claims (9)

1 . A power divider, comprising an input port, a first output port, a second output port, a first phase adjusting part, a second phase adjusting part, and a matching part, wherein: the first phase adjusting part is connected in series between the input port and the first output port, and is configured to adjust a phase of a first output signal output by the first output port; the second phase adjusting part is connected in series between the input port and the second output port, and is configured to adjust a phase of a second output signal output by the second output port; the matching part is connected in series between the first output port and the second output port, and is configured to match the first output port with the second output port; a phase difference between the first output signal and the second output signal is 180 degrees; wherein the matching part comprises: a fourth transmission line, one end of the fourth transmission line is electrically connected to the second output port; a first inductor, one end of the first inductor is electrically connected to the other end of the fourth transmission line, and the other end of the first inductor is electrically connected to the first output port; a first residual segment, one end of the first residual segment is electrically connected to a common end of the fourth transmission line and the first inductor, and the other end of the first residual segment is suspended; a second residual segment, one end of the second residual is electrically connected to the other end of the first inductor, and the other end of the second residual segment is suspended.
2 . The power divider according to claim 1 , wherein the first phase adjusting part comprises: a first transmission line, electrically connected between the input port and the first output port, and configured to adjust the phase of the first output signal, to cause the first output signal to have a phase of −90 degrees.
3 . The power divider according to claim 2 , wherein the second phase adjusting part is configured to adjust the phase of the second adjusting part to cause the second output signal to have a phase of +90 degrees, and the second phase adjusting part comprises: a second transmission line, one end of the second transmission line is electrically connected to the second output port, and the other end of the second transmission line is grounded; a first capacitor, one end of the first capacitor is electrically connected to the one end of the second transmission line, and the other end of the first capacitor is electrically connected to the input end; a third transmission line, one end of the third transmission is electrically connected to the other end of the first capacitor, and the other end of the third transmission is grounded.
4 . The power divider according to claim 1 , wherein a matching degree between the first output port and the second output port is adjusted by adjusting an inductance value of the first inductor.
5 . The power divider according to claim 1 , further comprising: a first resistor, one end of the first resistor is electrically connected to the other end of the first inductor, the other end of the first resistor is electrically connected to the first output port, and the first resistor is configured to adjust an isolation degree between the first output port and the second output port.
6 . The power divider according to claim 5 , wherein: the power divider is integrated on a printed circuit board; the input port, the first output port, the second output port, the first phase adjusting part, the second phase adjusting part, and the matching part are set on a first side of the printed circuit board, and a second side of the printed circuit board is a ground plane.
7 . The power divider according to claim 6 , wherein: the first output port and the second output port are perpendicular to each other; the input port is parallel to the first output port, and the input port is perpendicular to the second output port; the first transmission line is in a II shape, and one end of the first transmission line is vertically connected to the first output port and the other end of the first transmission line is vertically connected to the input port.
8 . The power divider according to claim 7 , wherein: the second transmission line is in a ┘ shape, one end of the second transmission line is vertically connected to the second output port and the other end of the second transmission line is connected to the ground plane through a first through-hole; the third transmission line is in a ┌ shape, one end of the third transmission line is connected to the other end of the first capacitor and the other end of the third transmission line is connected to the ground plane through a second through-hole, the second transmission line and the third transmission line form a semi enclosed storage space.
9 . The power divider according to claim 8 , wherein: the matching part is set in the semi enclosed storage space; the fourth transmission line is in a bent shape, one end of the fourth transmission line is vertically connected to the second transmission line and the other end of the fourth transmission line is connected to the one end of the first inductor; the first residual segment is in ┘ shape, one end of the first residual segment is connected to a common end of the fourth transmission line and the first inductor, and the other end of the first residual segment is suspended; the second residual segment is in a ┌ shape, one end of the second residual segment is electrically connected to the other end of the first inductor, and the other end of the second residual segment is suspended.

Description

FIELD The present disclosure relates to a field of microwave transmission technology, in particular to a power divider. BACKGROUND A power divider is a device that divides a power of an input signal into two or more outputs with equal or unequal power, and can also combine the power of multiple signals into one output. Power dividers with a 180 degree phase difference between the output ports are widely used in power combination, antenna feeding, etc. Common power dividers include 3 dB bridge couplers, branch line bridge couplers, ring bridge couplers, and Wilkinson power dividers. The most commonly used power divider is the Wilkinson power divider. In order to achieve a phase difference of 180 degrees between two output ports of the Wilkinson power divider, an external phase shifter is required, which will occupy a large PCB area and not meet requirements of equipment miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS Many aspects of the present disclosure are better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. FIG. 1 is a schematic diagram of the circuit model of an embodiment of a power divider of the present disclosure. FIG. 2 is a simulation diagram of S-parameters of an embodiment of the power divider of the present disclosure. FIG. 3 is a phase schematic diagram of a first output signal and a second output signal of an embodiment of the power divider of the present disclosure. FIG. 4 is a schematic diagram of a structure of a specific embodiment of the power divider of the present disclosure. FIG. 5 is a schematic diagram of an output power difference between a first output port and a second output port of a specific embodiment of the power divider of the present disclosure. FIG. 6 is a schematic diagram of the phase difference between the first output signal and the second output signal of a specific embodiment of the power divider of the present disclosure. DETAILED DESCRIPTION It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts have been exaggerated to better illustrate details and features of the present disclosure. The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings, in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one”. The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. Referring to FIG. 1, FIG. 1 is a schematic diagram of the circuit model of an embodiment of a power divider 1 of the present disclosure. In the embodiment, the power divider 1 can be applied to antenna arrays, balanced power amplifiers, mixers, and phase shifters. The power divider 1 divides an input signal into two signals with a phase difference of 180. Specifically, as shown in FIG. 1, the power divider 1 comprises an input port P1, a first output port P2, a second output port P3, a first phase adjusting part 10, a second phase adjusting part 20, and a matching part 30. The first phase adjusting part 10 is connected in series between the input port P1 and the first output port P2 to adjust a phase of a first output signal output by the first output port P2, so that the phase of the first output signal has a phase of −90 degrees. The second phase adjusting part 20 is connected in series between the input port P1 and the second output port P3