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Method of realizing high isolation degree of micro-strip combiner

A technology of high isolation and combiner, which is applied in the field of communication devices to achieve the effect of improving product isolation

Inactive Publication Date: 2019-04-30
DFINE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of technology and business needs, the mutual isolation requirements are relatively high. Conventional isolation combiners can no longer meet the requirements of existing systems. Therefore, a high-isolation microstrip combiner is needed for Meet the needs of high isolation of the system

Method used

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  • Method of realizing high isolation degree of micro-strip combiner

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Embodiment Construction

[0013] A method for realizing high isolation of microstrip combiner, is characterized in that, comprises the steps:

[0014] S1: The shunt end is connected to the high frequency end and the low frequency end respectively through the microstrip line;

[0015] S2: The high-frequency end is connected in series with a high-frequency microstrip band-pass or high-pass filter to filter the low-frequency signal to increase the isolation of the low-frequency end signal;

[0016] S3: The low-frequency end is connected in series with a low-frequency microstrip band-pass or low-pass filter to filter high-frequency signals to increase the isolation of high-frequency end signals;

[0017] Further, the branch ends are connected by a λ / 4 microstrip line.

[0018] Further, the high-frequency end is connected to the shunt end through a microstrip line through capacitive coupling.

[0019] Further, the connection between the low-frequency end and the shunt end through a microstrip line is an i...

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Abstract

A method of realizing high isolation degree of a micro-strip combiner comprises the following three steps: connection of a micro-strip line to a branching end, high-frequency signal selection and low-frequency signal selection. A micro-strip structure is adopted, and the isolation degree of the combiner is improved by changing the connection mode of the branching end of the combiner. At the branching end, inductive coupling is adopted at the low-frequency end, and low-frequency signals can be transmitted through the port because an inductor blocks high-frequency signals and allows low-frequency signals to pass through; and capacitive coupling is adopted at the high-frequency end, and high-frequency signals can be transmitted through the port because a capacitor allows high-frequency signals to pass through and blocks low-frequency signals. Therefore, the signal selectivity of the combiner is improved, the isolation degree is increased, and signals do not interfere with each other.

Description

technical field [0001] The invention relates to the technical field of communication devices, in particular to a method for realizing high isolation of a microstrip combiner. Background technique [0002] The microstrip combiner is widely used in the communication industry. Its function is mainly to transmit and receive signals through the antenna, and transmit the signal through the antenna at the same port, and require both to complete their functions without affecting each other. The mutual influence between signals is mainly caused by the insufficient isolation between the received signal and the transmitted signal. The greater the isolation, the more signals will not interfere with each other. With the development of technology and business needs, the mutual isolation requirements are relatively high. Conventional isolation combiners can no longer meet the requirements of existing systems. Therefore, a high-isolation microstrip combiner is needed for To meet the high i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/213H01P11/00
Inventor 王家彬张琼月高晶王晓飞汪泽廖利利
Owner DFINE TECH