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A Switchable Microstrip Dual Balun

A double balun and microstrip technology, applied in waveguide devices, circuits, connecting devices, etc., can solve the problems of complex design and large size, and achieve the effect of simple and compact circuit structure

Active Publication Date: 2022-01-28
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The switchable double balun structure can flexibly control the on-off state of the output port, and can be used in the design of reconfigurable antennas and various switch components to solve the problem of complex design and large size when multiple baluns are required in component design

Method used

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  • A Switchable Microstrip Dual Balun
  • A Switchable Microstrip Dual Balun
  • A Switchable Microstrip Dual Balun

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] Such as figure 1 , figure 2 is a schematic diagram of a switchable microstrip double balun according to an embodiment of the present invention. The switchable microstrip double balun in the embodiment of the present invention has a single-layer circuit structure. The microstrip lines and metal pads in the circuit structure are printed on the upper surface of the dielectric substrate, and the lower surface of the dielectric substrate is a metal ground. The material of the dielectric substrate It is Rogers 4003C with a dielectric constant of 3.38 and a loss tangent of 0.0027. The...

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Abstract

The invention relates to a switchable microstrip double balun, which includes a single-ended input and two balanced outputs. The narrow microstrip line is connected to the output port of the quarter-wavelength coupled transmission line and the input port set at one end of the half-wavelength transmission line, wherein the outer end of the quarter-wavelength coupled transmission line is provided with a switch circuit, and the switch circuit includes a cathode ground The PIN diode and the bias circuit that controls the on-off of the PIN diode (including the DC blocking capacitor and the inductance for isolating the radio frequency signal). The invention can control the on-off of the output port of the double balun structure in a specific frequency band by controlling the on-off state of the PIN diode, and has the advantages of simple structure and small size.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a switchable microstrip double balun. Background technique [0002] Balun circuits, also known as balanced unbalanced conversion circuits, are widely used to drive balanced antennas and various types of balanced mixers, amplifiers, frequency multipliers, single sideband modulators, etc. The double balun circuit structure can integrate two baluns in a single circuit with limited size, thereby reducing the overall size of the circuit and reducing the manufacturing cost. The switchable double balun structure can flexibly control the on-off state of the output port, and can be used in the design of reconfigurable antennas and various switch components to solve the problem of complex design and large size when multiple baluns are required in component design. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/10
CPCH01P5/10
Inventor 陈建新柯彦慧杨玲玲
Owner NANTONG UNIVERSITY