Millimeter Wave Low Reflection High Isolation Power Combiner

A power combiner and low-reflection technology, applied in waveguide-type devices, electrical components, connecting devices, etc., can solve the problems of poor input transmission line isolation and large port reflection, and achieve the effect of low-reflection and high-isolation power combiners

Inactive Publication Date: 2012-02-01
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, such a power combiner not only has one or two of the three ports not well matched, so the reflection of the port is large, but also the isolation between its two input transmission lines is not good, and the isolation is usually only about -6dB

Method used

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  • Millimeter Wave Low Reflection High Isolation Power Combiner
  • Millimeter Wave Low Reflection High Isolation Power Combiner

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Embodiment Construction

[0013] The technical solution adopted in the present invention is: the millimeter wave low reflection high isolation power combiner includes a first input transmission line 1 , a second input transmission line 2 , an isolated transmission line 3 , an output transmission line 4 and an absorbing material 11 . The input, isolation, and output transmission lines can be microstrip lines, striplines, or other forms of transmission lines. The two ends of the absorbing material 11 are made into a gradual shape to avoid reflections. It absorbs electromagnetic waves in the operating frequency band of the power combiner to form an isolation transmission line. 3, making the entire power combiner a lossy three-port network. The lengths of the two input transmission lines, that is, the first input transmission line 1 and the second input transmission line 2 are the same or differ by integer multiples of wavelength. From the port of one input transmission line, that is, the first input port ...

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Abstract

A millimeter-wave low-reflection high-isolation power combiner relates to a power combiner capable of operating in millimeter-wave and above frequency bands with low reflection and high isolation between input ports. One end of a first input transmission line (1) of the combiner is a first Input port (8), one end of the second input transmission line (2) is the second input port (9), the other end of the first input transmission line (1) is connected with the other end of the second input transmission line (2) and hereby connected with One end of the output transmission line (4) is connected to form a three-wire junction (7), the isolated transmission line (3) is connected between the first input transmission line (1) and the second input transmission line (2), and the absorbing material (11) is placed on the isolated transmission line (3), the low-reflection high-isolation power combiner solves the problem that the three ports cannot be matched at the same time and the isolation between the input transmission lines is not good due to the lack of available centralized parameter isolation resistance of the power combiner in the millimeter wave or higher frequency band. The problem.

Description

technical field [0001] The invention relates to a power combiner, in particular to a power combiner capable of operating in millimeter wave and above frequency bands with low reflection and high isolation between input ports. Background technique [0002] The function of the power combiner is to combine the power input by two transmission lines into one transmission line for output, which belongs to the three-port network. Since a power combiner can generally also be used as a power divider, the names of a power combiner and a power divider are no longer distinguished in general. The Wilkinson power combiner is a commonly used power combiner. Its structural feature is that there is an isolation resistor with concentrated parameters connected between the two input transmission lines. The distance between the isolation resistance and the intersection of the two input transmission lines is four one-fifth of a wavelength. In order to avoid coupling between the two input transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/00H01P5/12
Inventor 殷晓星赵洪新杨非孙忠良
Owner SOUTHEAST UNIV
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