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A Broadband Butler Matrix Feed Network with Phase Difference and Frequency Variation

A feeding network and phase difference technology, which is applied in the field of communication antennas, can solve the problems of narrow-bandwidth electronically controlled phase shifters, and achieve the effects of light weight, low processing cost, and good application prospects

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through this simple design method, they are increased from 4 beams to 16 beams from the original traditional 4×4 Butler matrix, but the operating bandwidth is very narrow and many electronically controlled phase shifters are required

Method used

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  • A Broadband Butler Matrix Feed Network with Phase Difference and Frequency Variation
  • A Broadband Butler Matrix Feed Network with Phase Difference and Frequency Variation
  • A Broadband Butler Matrix Feed Network with Phase Difference and Frequency Variation

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with specific examples.

[0028] see figure 1 with figure 2 As shown, the broadband Butler matrix feeder network with phase difference and frequency variation provided by this embodiment includes an upper ground metal plate 06, an upper dielectric substrate 03, an intermediate dielectric substrate 04, and a lower dielectric substrate stacked in sequence from top to bottom. The substrate 05 and the lower ground metal plate 07, wherein the upper dielectric substrate 03 and the lower dielectric substrate 05 have the same thickness, and the intermediate dielectric substrate 04 has a thickness smaller than the upper dielectric substrate 03 and the lower dielectric substrate 05;

[0029]The intermediate layer dielectric substrate 04 is provided with the first input port 11, the second input port 12, the third input port 13 and the fourth input port 14 of the feed network, and the first output port 21 and t...

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Abstract

The invention discloses a broadband Butler matrix feeder network with phase difference and frequency change. The feeder network has a working range of 2GHz-4GHz, and is provided with four input ports, four output ports, and two three-stage couplers. , four broadband couplers, three crossover networks, two phase compensators, two 45° phase shifters, and six broadband phase shifters, two of which are connected to matched loads at the input ports, and the other two input ports are independently fed Electricity, when the frequency changes from 2GHz to 4GHz, it can output signals with equal amplitude and phase difference from ±45° to ±90°, the change process is close to linear change, and the operating frequency range of the feed network exceeds one frequency multiplier; the present invention Using power combination to achieve phase difference frequency change, and realize the radiation characteristics of antenna array beam direction stability, the whole feed network structure is simple and compact, simple processing, light weight, low processing cost, wide working bandwidth, has a good application prospect .

Description

technical field [0001] The invention relates to the technical field of communication antennas, in particular to a wideband Butler matrix feeding network with frequency-variable phase difference. Background technique [0002] With the popularization of 5G technology, the advent of the Internet of Vehicles and the Internet of Things, it marks that wireless technology will usher in a peak period of vigorous development. On the other hand, with the rapid development of electronic information, more and more devices will be connected to wireless communication networks. With the limitation of spectrum resource and bandwidth, improving the capacity of wireless communication system is a hotspot of people's research. Multi-beam antennas are widely used in wireless communication systems due to their multi-directional high-gain characteristics and the ability to generate different beams pointing in different directions with the same radiation aperture. At present, the main technology ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q3/40H01Q21/00
CPCH01Q3/40H01Q21/0006
Inventor 陈付昌向凯燃
Owner SOUTH CHINA UNIV OF TECH
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