阅读说明：本技术 超宽带一分四功分器 (Ultra-wideband one-to-four power divider ) 是由 牛佳伟 朱伟强 陆锦辉 于 2020-04-12 设计创作，主要内容包括：本发明公开了一种超宽带一分四路功分器,通过级连的方式将三个一分二功分器连在一起,同时采用多层板的电路形式,优化了电路结构的设计,提高了功分器的微波性能和可生产性。本文设计的功分器的工作频率为6-18GHz.通过仿真软件验证可知,回波损耗优于-13dBm,插入损耗优于-7dBm,隔离度优于-12dBm。加工实物验证结果表明,理论仿真结果与实验测试基本一致,证明了设计方法的可行性。(The invention discloses an ultra-wideband one-in-four-way power divider, which is characterized in that three one-in-two power dividers are connected together in a cascading mode, and meanwhile, a circuit form of a multilayer board is adopted, so that the design of a circuit structure is optimized, and the microwave performance and the producibility of the power divider are improved. The working frequency of the power divider designed by the method is 6-18GHz, and the simulation software verifies that the return loss is better than-13 dBm, the insertion loss is better than-7 dBm, and the isolation is better than-12 dBm. The processed object verification result shows that the theoretical simulation result is basically consistent with the experimental test, and the feasibility of the design method is proved.)

1. A microwave broadband one-to-four power divider is characterized in that: comprises a microwave medium plate (28), a main unit (25), a first slave unit (26) and a second slave unit (27); the master unit (25), the first slave unit (26) and the second slave unit (27) are distributed on the medium substrate in a tree diagram structure, the master unit (25) takes the center of the medium substrate as an axis, and the first slave unit (26) and the second slave unit (27) are symmetrically distributed on two sides of the axis; the first output port (4) of the master unit (25) is connected to the first input port (2) of the first slave unit (26), and the second output port (5) of the master unit (25) is connected to the second input port (3) of the second slave unit (27).

2. The microwave broadband one-to-four power divider according to claim 1, characterized in that: a first 1/4 impedance transformer (16) is connected below a first input port (1) of the main unit (25), a first 1/4 impedance transformer (16) and a second 1/4 impedance transformer (17) are connected through ports, a first isolation resistor (10) is arranged at the joint of the first 1/4 impedance transformer (16) and the second 1/4 impedance transformer (17), a second 1/4 impedance transformer (17) and a third 1/4 impedance transformer (18) are connected through ports, and a second isolation resistor (11) is arranged at the joint of the second 1/4 impedance transformer (17) and the third 1/4 impedance transformer (18).

3. The microwave broadband one-to-four power divider according to claim 1, characterized in that: a fourth 1/4 impedance transformer (19) is connected below the second input port (2) of the first slave unit (26), a fourth 1/4 impedance transformer (19) is in port interconnection with a fifth 1/4 impedance transformer (20), a third isolation resistor (12) is arranged at the connection position of the fourth 1/4 impedance transformer (19) and the fifth 1/4 impedance transformer (20), a fifth 1/4 impedance transformer (20) is in port interconnection with a sixth 1/4 impedance transformer (21), and a fourth isolation resistor (13) is arranged at the connection position of the fifth 1/4 impedance transformer (20) and the sixth 1/4 impedance transformer (21).

4. The microwave broadband one-to-four power divider according to claim 1, characterized in that: and a seventh connection 1/4 impedance transformer (22) is arranged below the third input port (3) of the second slave unit (27), the seventh 1/4 impedance transformer (22) is interconnected with the eighth 1/4 impedance transformer (23) through a port, a fifth isolation resistor (14) is arranged at the connection position of the seventh 1/4 impedance transformer (22) and the eighth 1/4 impedance transformer (23), the eighth 1/4 impedance transformer (23) is interconnected with the ninth 1/4 impedance transformer (24) through a port, and a sixth isolation resistor (15) is arranged at the connection position of the eighth 1/4 impedance transformer (23) and the ninth 1/4 impedance transformer (24) through a port.

5. The microwave broadband one-to-four power divider according to claim 1, characterized in that: the first isolation resistor (10) impedance value < second isolation resistor (11) impedance value, the third isolation resistor (12) impedance value < fourth isolation resistor (13) impedance value, the fifth isolation resistor (14) impedance value < sixth isolation resistor (15) impedance value, the first isolation resistor (10) impedance value = third isolation resistor (12) impedance value = fifth isolation resistor (14) impedance value, the second isolation resistor (11) impedance value = fourth isolation resistor (13) impedance value = sixth isolation resistor (15) impedance value.

Technical Field

The invention belongs to the field of communication, and particularly relates to an ultra wide band one-to-four power divider.

Background

The power divider is a main device for realizing signal distribution from one port to one port or signal synthesis from N port to one port in a microwave system. The microwave phase-locked loop is widely applied to microwave equipment such as phased array radars, multipath relay communication machines and the like. The core requirements of the current generation high efficiency system on the power divider are as follows: wide frequency band, small size, low insertion loss and high isolation between ports. Therefore, designing a conventional broadband power divider using a miniaturization scheme and designing a high-performance broadband miniaturized power divider using a new transmission line have become important research contents of passive devices.

The ultra-wideband refers to a plane/quasi-plane transmission line with a communication frequency band of more than 25 percent, and a working main mode is selected as a TEM mode/quasi-TEM mode in order to synchronously realize the ultra-wideband characteristic and miniaturization of the power divider, and the ultra-wideband power divider comprises a microstrip line, a double line and a substrate integrated coaxial line.

Disclosure of Invention

The invention aims to provide an ultra-wideband power divider. The technology solves the problems of insufficient bandwidth, large volume and the like of the existing power divider.

The technical solution for realizing the purpose of the invention is as follows: a microwave broadband one-to-four power divider comprises a microwave dielectric plate, a main unit, a first slave unit and a second slave unit; the main unit, the first slave unit and the second slave unit are distributed on the medium substrate in a tree diagram structure, the main unit takes the center of the medium substrate as an axis, and the first slave unit and the second slave unit are symmetrically distributed on two sides of the axis; the first output port of the master unit is connected with the first input port of the first slave unit, and the second output port of the master unit is connected with the second input port of the second slave unit.

A broadband one-to-four power divider comprises the following steps:

step 1: the microwave dielectric plate comprises a box body (28), a main unit (25), a first slave unit (26) and a second slave unit (27).

Step 2: a first 1/4 impedance transformer (16) is connected below an input port (1) of the main unit (25), a first 1/4 impedance transformer (16) is connected with a second 1/4 impedance transformer (17) in a port interconnection mode, a first isolation resistor (10) is arranged at the connection position of the first 1/4 impedance transformer (16) and the second 1/4 impedance transformer (17), a second 1/4 impedance transformer (17) is connected with a third 1/4 impedance transformer (18) in a port interconnection mode, and a second isolation resistor (11) is arranged at the connection position of the second 1/4 impedance transformer (17) and the third 1/4 impedance transformer (18).

And step 3: a fourth 1/4 impedance transformer (19) is connected below the input port (2) of the first slave unit (26), a fourth 1/4 impedance transformer (19) is in port interconnection with a fifth 1/4 impedance transformer (20), a third isolation resistor (12) is arranged at the joint of the fourth 1/4 impedance transformer (19) and the fifth 1/4 impedance transformer (20), a fifth 1/4 impedance transformer (20) is in port interconnection with a sixth 1/4 impedance transformer (21), and a fourth isolation resistor (13) is arranged at the joint of the fifth 1/4 impedance transformer (20) and the sixth 1/4 impedance transformer (21)

And 4, step 4: a seventh connection 1/4 impedance transformer (22) is arranged below the input port (3) of the second slave unit (27), a seventh 1/4 impedance transformer (22) is connected with an eighth 1/4 impedance transformer (23) in a port interconnection mode, a fifth isolation resistor (14) is arranged at the connection position of the seventh 1/4 impedance transformer (22) and the eighth 1/4 impedance transformer (23), an eighth 1/4 impedance transformer (23) is connected with a ninth 1/4 impedance transformer (24) in a port interconnection mode, and a sixth isolation resistor (15) is arranged at the connection position of the eighth 1/4 impedance transformer (23) and the ninth 1/4 impedance transformer (24) in a port interconnection mode.

Compared with the prior art, the invention has the following remarkable advantages: the ultra-wideband one-to-four power divider can work stably in a wider bandwidth, and has a smaller size than the conventional power divider. The area of the power divider is 60% smaller than that of a linear traditional power divider, and as can be seen from fig. 1, microstrip line metal layers are uniformly distributed on the thin film substrate, so that the effects of simple structure, small size and area, convenience in integration, improvement of the reliability of a device, excellent standing wave performance and the like are achieved; the unstable characteristic of broadband frequency response can be effectively improved.

Drawings

Fig. 1 is a block diagram of an ultra-wideband one-to-four power divider according to the present invention.

Fig. 2 is a flow chart of an implementation method of the ultra-wideband one-to-four power divider of the present invention.

Detailed Description

The invention is further described with reference to the drawings and examples.

With reference to fig. 1, a microwave broadband one-to-four power divider includes a microwave dielectric plate 28, a master unit 25, a first slave unit 26, and a second slave unit 27; the master unit 25, the first slave unit 26 and the second slave unit 27 are distributed on the medium substrate in a tree diagram structure, the master unit 25 takes the center of the medium substrate as an axis, and the first slave unit 26 and the second slave unit 27 are symmetrically distributed on two sides of the axis; the first output port 4 of the master unit 25 is connected to the first input port 2 of the first slave unit 26 and the second output port 5 of the master unit 25 is connected to the second input port 3 of the second slave unit 27.

A first 1/4 impedance transformer 16 is connected below the first input port 1 of the main unit 25, a first 1/4 impedance transformer 16 is connected with a second 1/4 impedance transformer 17 through a port, a first isolation resistor 10 is arranged at the joint of the first 1/4 impedance transformer 16 and the second 1/4 impedance transformer 17, a second 1/4 impedance transformer 17 is connected with a third 1/4 impedance transformer 18 through a port, and a second isolation resistor 11 is arranged at the joint of the second 1/4 impedance transformer 17 and the third 1/4 impedance transformer 18.

A fourth 1/4 impedance transformer 19 is connected below the second input port 2 of the first slave unit 26, a fourth 1/4 impedance transformer 19 is in port interconnection with a fifth 1/4 impedance transformer 20, a third isolation resistor 12 is arranged at the connection position of the fourth 1/4 impedance transformer 19 and the fifth 1/4 impedance transformer 20, a fifth 1/4 impedance transformer 20 is in port interconnection with a sixth 1/4 impedance transformer 21, and a fourth isolation resistor 13 is arranged at the connection position of the fifth 1/4 impedance transformer 20 and the sixth 1/4 impedance transformer 21.

A seventh connection 1/4 impedance transformer 22 is arranged below the third input port 3 of the second slave unit 27, the seventh 1/4 impedance transformer 22 is interconnected with the eighth 1/4 impedance transformer 23, a fifth isolation resistor 14 is arranged at the connection position of the seventh 1/4 impedance transformer 22 and the eighth 1/4 impedance transformer 23, the eighth 1/4 impedance transformer 23 is interconnected with the ninth 1/4 impedance transformer 24, and a sixth isolation resistor 15 is arranged at the connection position of the eighth 1/4 impedance transformer 23 and the ninth 1/4 impedance transformer 24.

The impedance value of the first isolation resistor 10 is less than the impedance value of the second isolation resistor 11, the impedance value of the third isolation resistor 12 is less than the impedance value of the fourth isolation resistor 13, the impedance value of the fifth isolation resistor 14 is less than the impedance value of the sixth isolation resistor 15, the impedance value of the first isolation resistor 10 = the impedance value of the third isolation resistor 12 = the impedance value of the fifth isolation resistor 14, and the impedance value of the second isolation resistor 11 = the impedance value of the fourth isolation resistor 13 = the impedance value of the sixth isolation resistor 15.

With reference to fig. 2, the design of the ultra-wideband one-to-four power divider of the present invention includes the following steps:

step 1: the technical solution of the present invention is explained in detail below, but the scope of the present invention is not limited to the embodiments;

step 2: in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention;