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A Butler Matrix Network Structure Based on Dielectric Integrated Suspension Lines

A Butler matrix and medium integration technology, applied in the field of Butler matrix network structure, can solve the problems of difficult circuit layout and large loss, and achieve the effects of low processing cost, low loss and reduction of radiation loss.

Active Publication Date: 2020-03-31
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a Butler matrix network structure based on dielectric-integrated suspension lines, which solves the technical problems of difficult circuit layout and high loss in the existing Butler matrix network, and realizes the network structure based on dielectric-integrated suspension lines. Butler matrix network loss is low, easy to integrate technical effect

Method used

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  • A Butler Matrix Network Structure Based on Dielectric Integrated Suspension Lines
  • A Butler Matrix Network Structure Based on Dielectric Integrated Suspension Lines
  • A Butler Matrix Network Structure Based on Dielectric Integrated Suspension Lines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: The five-layer dielectric substrate is selected as:

[0052] Substrate1: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0053] Substrate2: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0054] Substrate3: Rogers5880 material, plate thickness 0.25mm, dielectric constant 2.2;

[0055] Substrate4: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0056] Substrate5: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0057] The design frequency band of the Butler matrix is: the center frequency is 25.45GHz, and the bandwidth is 24.5GHz-26.5GHz.

[0058] G1 to G10 are ten metal layers. Can be copper clad or gold plated.

[0059] Both the coupler and the cross junction adopt a patch-shaped structure, and the phase shifter adopts a bent-line structure. In order to reduce the loss of the circuit, we proceed from three aspects: radiation loss, conductor loss, and dielectric loss. As shown in the cross-sectional view, all t...

Embodiment 2

[0061] The five-layer dielectric substrate is selected as:

[0062] Substrate1: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0063] Substrate2: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0064] Substrate3: Rogers5880 material, plate thickness 0.25mm, dielectric constant 2.2;

[0065] Substrate4: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0066] Substrate5: Fr4 material, thickness 0.6mm, dielectric constant 4.4;

[0067] The design frequency band of the Butler matrix is: the center frequency is 25.45GHz, and the bandwidth is 24.5GHz-26.5GHz.

[0068] Both the coupler and the cross junction adopt a patch-shaped structure, and the phase shifter adopts a bent-line structure. Antennas are also implemented on the SISL platform. In order to reduce the loss of the circuit, we proceed from three aspects: radiation loss, conductor loss, and dielectric loss. Finally adding the transition section has been tested as Figure 9 shown. For th...

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PUM

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Abstract

The invention discloses a Butler matrix network structure based on medium-integrated suspension lines. The structure comprises: a Butler matrix network and medium-integrated suspension lines, and the Butler matrix network is packaged and fixed in the cavity of the medium-integrated suspension lines. Among them, the components of the Butler matrix network correspond to the cavities of the dielectric-integrated suspension line one by one, which solves the technical problems of difficult circuit layout and high loss in the existing Butler matrix network, and realizes a dielectric-based integrated suspension system. The Butler matrix network of the line has low loss and is easy to integrate the technical effect.

Description

technical field [0001] The invention relates to microwave and millimeter wave circuit and system technology, in particular to a Butler matrix network structure based on dielectric integrated suspension lines. Background technique [0002] Automobile anti-collision radar can enable car drivers to keep abreast of the distance and speed of surrounding vehicles, and alert the driver at critical moments, thereby avoiding accidents. A key component in automotive collision avoidance radar is the antenna feed network, which is used primarily for beamforming. The Butler matrix network is a passive beamforming network, which has the advantage of less loss compared to active phase shifting circuits. The traditional board-level Butler matrix network usually adopts a microstrip or stripline structure, and the couplers used in it generally adopt the topology of a branch line coupler or a coupled line coupler, but when the frequency is high (for example, for 24GHz Automotive anti-collisi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/32H01Q3/40G01S7/28G01S13/931
CPCG01S7/28G01S13/931H01Q1/3233H01Q3/40
Inventor 马凯学王勇强简泽
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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