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Balance-to-unbalance signal filtering power divider

A signal filtering and unbalanced technology, which is applied in the direction of waveguide devices, circuits, connecting devices, etc., can solve the problems of large size, insufficient common mode suppression, and complex structure of filter power splitters.

Active Publication Date: 2017-12-12
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In short, the problems existing in the prior art are: the structure of the filter power divider is complex, the size is large, and the common mode rejection is not good enough

Method used

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  • Balance-to-unbalance signal filtering power divider
  • Balance-to-unbalance signal filtering power divider
  • Balance-to-unbalance signal filtering power divider

Examples

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Embodiment 1

[0054] The three-dimensional structure of a balanced-to-unbalanced signal filter power splitter is as follows: figure 1 As shown, the relevant dimensions and specifications are as follows figure 2 shown. The dielectric substrate 20 used has a relative permittivity of 3.55, a thickness of 2 mm, and a loss tangent of 0.0027. combine figure 2 , The various dimensions of the power divider are as follows: M1=4mm, M2=4mm, M3=3mm, L1=1.2mm, L2=0.2mm, L3=0.1mm, L4=21.96mm, L5=44.67mm, L6=43.78 mm. The entire structure is arranged axisymmetrically with respect to the midline of the long sides of the dielectric substrate 20 .

[0055] The power splitter of this example is modeled and simulated in the electromagnetic simulation software HFSS.13.

[0056] image 3 It is the S-parameter simulation diagram when the differential mode signal is input in the embodiment. It can be seen that the center frequency of the power divider is 2 GHz, and the square coefficient is very high, whi...

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Abstract

The invention discloses a balance-to-unbalance signal filtering power divider which comprises a metal grounding plate (2), first and second input port feeder lines (31 and 32) and first and second output port feeder lines (41 and 42), wherein the metal grounding plate (2) is fully covered on the lower surface of a rectangular dielectric substrate (1); the first and second input port feeder lines (31 and 32) and the first and second output port feeder lines (41 and 42) are laminated on the upper surface of the dielectric substrate (1); the upper surface of the dielectric substrate (1) comprises a first resonator and a second resonator (51, 52), first to fourth micro-strip impedance tapered lines (61, 62, 63 and 64), first to sixth coupling lines (71-76), a micro-strip line (8) and a first isolation resistor and a second isolation resistor (91 and 92). The balance-to-unbalance signal filtering power divider disclosed by the invention is simple in structure, small in size and excellent in common-mode rejection.

Description

technical field [0001] The invention relates to the technical field of microwave passive devices, in particular to a balanced-to-unbalanced signal filter power splitter with simple structure and good common-mode suppression. Background technique [0002] The power splitter is used to distribute the output power in the microwave radio frequency system, and then transmit the distributed power to the next device, which is an extremely important component. In order to prevent harmonic interference, a filter is usually added in front of the input end of the power divider, and a filter is added behind each output end at the same time. [0003] In 2017, M.Heydari; S.Roshani published a paper "Miniaturised unequal Wilkinson power divider using lumped component elements" in the journal Electronics Letters, proposing a miniaturized power divider, but without filtering function. [0004] In 2015, Kai Xu; Jin Shi; Longlong Lin; Jian-Xin Chen published a paper "A Balanced-to-Unbalanced ...

Claims

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Application Information

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IPC IPC(8): H01P5/16
CPCH01P5/16
Inventor 陈全刚黄烽徐海艳陆佳元王建朋
Owner NANJING UNIV OF SCI & TECH
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