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Miniaturized millimeter wave on-chip band-pass filter

A band-pass filter and millimeter-wave technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of low loss, large bandwidth, and insufficient transmission zero point, and achieve low loss, enhanced out-of-band rejection, The effect of improving in-band flatness

Inactive Publication Date: 2020-11-27
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing compound left-handed structure band-pass filter has the advantages of lower loss and larger bandwidth, but the degree of out-of-band suppression is not enough, and the transmission zero point is not obvious enough

Method used

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  • Miniaturized millimeter wave on-chip band-pass filter
  • Miniaturized millimeter wave on-chip band-pass filter
  • Miniaturized millimeter wave on-chip band-pass filter

Examples

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Embodiment Construction

[0018] Such as figure 1 and 2 As shown, this embodiment adopts 0.35 μm GaAs HBT process, and the miniaturized millimeter-wave on-chip bandpass filter of this embodiment includes an input port 1, a first composite left and right hand resonance unit 9, a second composite left and right hand resonance unit 4 and an output port 5. The input port 1 is connected to the first composite left-hand resonance unit 9 through the first microstrip line 11, and the first composite left-hand resonance unit 9 is connected to the second composite left-hand resonance unit 4 through two parallel second microstrip lines 8, and the second composite The left and right hand resonant unit 4 is connected to the output port 5 through the third microstrip line 12, and there are four second ground vias 2 around the bandpass filter, the ground terminal 6 is connected to the second ground via hole 2, and the ground terminal 6 is the same as the input and output The microstrip line constitutes a GSG pad str...

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PUM

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Abstract

The invention discloses a miniaturized millimeter wave on-chip band-pass filter. The filter comprises an input port, a first composite left-right hand resonance unit, a second composite left-right hand resonance unit and an output port, the input port is connected with the first composite left-right hand resonance unit through a first microstrip line, the first composite left-right hand resonanceunit is connected with the second composite left-right hand resonance unit through two parallel second microstrip lines, the second composite left-right hand resonance unit is connected with the output port through a third microstrip line, and millimeter wave signals are introduced from the input port, pass through the first composite left-right hand resonance unit and the second composite left-right hand resonance unit and are finally output from the output port. According to the miniaturized millimeter wave on-chip band-pass filter, the coupling effect between the composite left-right resonance units is utilized to construct the capacitance-inductance parallel resonance unit to form a transmission zero point, so that the out-of-band rejection degree of the band-pass filter is enhanced; and performance indexes of miniaturization, low loss and high inhibition are realized.

Description

technical field [0001] The invention relates to a band-pass filter, in particular to a miniaturized millimeter-wave on-chip band-pass filter. Background technique [0002] The millimeter-wave bandpass filter is one of the important modules in modern wireless communication systems. With the rapid development of radio frequency integrated circuits, the miniaturization trend of communication equipment terminals and the shortage of spectrum resources, higher requirements are placed on the performance and size of the filter. Requirements, the miniaturization of communication equipment requires the filter to be more miniaturized, and the shortage of spectrum resources requires the filter to have good out-of-band suppression and low insertion loss, otherwise the signals of adjacent channels will cause interference. In order to meet the requirements of system miniaturization, With the requirement of high integration, the development trend of miniaturization and high performance of f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/20309H01P1/2039
Inventor 胡善文胡云清张志涛张月华顾玲
Owner NANJING UNIV OF POSTS & TELECOMM