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A kind of s-band microstrip inverting filter power divider

A power divider and microstrip technology, applied in the field of information detection, can solve the problems of difficult inversion output, difficult and good suppression, etc., and achieve the effect of simplifying the design process, good flatness, and achieving even distribution.

Inactive Publication Date: 2016-08-31
PLA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, it is difficult for this power divider to achieve good suppression of signals outside the working frequency band; in addition, in some occasions, output inversion is required, and it is difficult for this power divider to achieve inverting output

Method used

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  • A kind of s-band microstrip inverting filter power divider
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  • A kind of s-band microstrip inverting filter power divider

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Embodiment Construction

[0023] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0024] see figure 1 As shown, it is the topological diagram of the third-order filter of the present invention. "●" in the figure represents the signal source and load, and "○" represents the resonator. For the third-order filter, there are three resonators here; the third-order The coupling coefficient matrix of the filter is N+2=5 order, as shown in formula (1),

[0025] [ m ] = 0 1.11 0 0 0 1.11 0 1.064 0 ...

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Abstract

The invention relates to an S-band microstrip inverse filtering power divider, which comprises four resonators and a load, wherein the coupling coefficient between the first resonator and the source in front of it is m' S1 =1.11, the coupling coefficient m' between the first resonator and the second resonator 12 =1.064, the coupling coefficient m' between the second resonator and the third resonator 23 Coupling coefficient m' between the second resonator and the fourth resonator 24 have the same absolute value, and That is, the absolute value of the coupling coefficient of the power distribution branch is the same and equal to the coupling coefficient between the resonators in the corresponding filter. The third resonator and the first load L 1 coupling coefficient between with the fourth resonator 4 and the second load L 2 coupling coefficient between the same, and From this, the coupling coefficient matrix of the filter power divider can be obtained. The inverse filter power divider of the invention can not only realize the average distribution of the power of the output ports, but also make the output signal phase opposite, suitable for the application occasions that need the inversion feed or the inversion signal, and at the same time, it has a good ability to suppress the out-of-band signal. .

Description

technical field [0001] The invention relates to the field of information detection, in particular to an S-band microstrip inverting filter power divider. Background technique [0002] Microwave power dividers are widely used in antenna arrays and power systems. There are many studies on microwave power splitters; a common microwave power splitter is the Wilkinson power splitter, which uses impedance transformation lines to ensure that the characteristic impedance of each port is the same. [0003] However, it is difficult for this power divider to achieve good suppression of signals outside the working frequency band; in addition, in some occasions, output inversion is required, and it is difficult for this power divider to achieve inverting output. [0004] In view of the above-mentioned defects, the author of the present invention has finally obtained this creation through long-term research and practice. Contents of the invention [0005] The object of the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/12
Inventor 钟兴建叶骏东屈德新余同彬
Owner PLA UNIV OF SCI & TECH
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