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Wilkinson power divider with isolation frequency point aligned Chebyshev filtering characteristics and a preparation method thereof

A power divider, Chebyshev's technology, applied in waveguide-type devices, instruments, special data processing applications, etc., can solve the problem of the large size of the microstrip structure, and achieve the effect of expanding the scope of application, reducing the number of segments, and improving the isolation characteristics.

Inactive Publication Date: 2019-05-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is too bulky for a microstrip structure

Method used

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  • Wilkinson power divider with isolation frequency point aligned Chebyshev filtering characteristics and a preparation method thereof
  • Wilkinson power divider with isolation frequency point aligned Chebyshev filtering characteristics and a preparation method thereof
  • Wilkinson power divider with isolation frequency point aligned Chebyshev filtering characteristics and a preparation method thereof

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preparation example Construction

[0084] The present invention also provides a preparation method of a Wilkinson power divider with the Chebyshev filter characteristics of isolation frequency point alignment, which is used to prepare the Wilkinson power divider with the Chebyshev filter characteristics of isolation frequency point alignment A power splitter, comprising the steps of:

[0085] Step 1, determine the order n of the transmission line in the power divider, the segment number m of the short wire and the connection position of the short wire according to the engineering needs, and obtain the circuit design model of the power divider;

[0086] Wherein, the segment number m of the short line and the connection position of the short line are determined according to the rules described above.

[0087] Step 2, performing dual-mode analysis on the design model to obtain the overall matrix of the transmission line and short wiring; and obtain the reflection function S of the design model 11 and the transfer...

Embodiment

[0093] In this embodiment, a Wilkinson power divider with the Chebyshev filter characteristic of isolation frequency point alignment is prepared by using the 4th-order first transmission line and 2 short-circuit lines. The specific preparation process is as follows:

[0094] (1) if Figure 9 As shown, an even-mode analysis is first performed on the designed circuit model, and the even-mode analysis is an analysis of the quality of signal transmission from port 1 (input end) to port 2 (or 3) (output end). What the present invention uses is the analytical method of ABCD matrix,

[0095] Among them, the ABCD matrix of the first horizontal transmission line is:

[0096]

[0097] The ABCD matrix of the short wiring is:

[0098]

[0099] Considering the 4 first transmission lines in the middle and the 2 short lines as one, its overall ABCD matrix is:

[0100]

[0101] Among them, the items of the matrix ABCD are:

[0102]

[0103] In the formula, a 0 , a 2 , a 4 , b...

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Abstract

The invention discloses a Wilkinson power divider with isolation frequency point aligned Chebyshev filtering characteristics, which comprises an input end and two output ends, and also comprises two transmission branches connected in parallel between the input end and the two output ends; Each transmission branch is formed by connecting n sections of first transmission lines and one section of second transmission line in series; Wherein the second transmission line is selectively connected to the starting end or the tail end of the transmission shunt; The plurality of resistors are respectively connected between every two corresponding sections of transmission lines on the two transmission branches; The two groups of short-circuit wires are symmetrically connected to the two transmission branches; Each group of short-circuit lines comprises m short-circuit lines, and m is greater than or equal to 2 and less than or equal to n; When m is an even number, the short-circuit lines are connected to symmetrical positions on the two sides of the center of the n sections of first transmission lines; And when m is an odd number, the short circuit lines are connected to the central positionsof the n sections of first transmission lines and the symmetrical positions on the two sides of the central positions. The invention also provides a preparation method of the power divider.

Description

technical field [0001] The invention belongs to the technical field of radio frequency circuit microstrip line device manufacturing, and in particular relates to a Wilkinson power divider with Chebyshev filter characteristics of isolation frequency point alignment and a preparation method thereof. Background technique [0002] With the development of society, people demand more and more elements for information, whether it is a civilian communication system or a military radar system. In communication system, radar system and electronic countermeasure system, microwave power divider is a crucial passive device. Its function is to divide the signal at the input terminal equally or unequally according to the requirements to transmit information to several channels, so as to achieve the purpose of power distribution. When high power is needed to transmit information, the output terminal is regarded as the input terminal, and the input terminal is regarded as the output termina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50H01P5/16H01P11/00
Inventor 王小龙包春喜吴斌王庆凤卢革宇
Owner JILIN UNIV
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