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Differential duplex filtering antenna with double-groove symmetrical excitation

A symmetrical excitation and filter antenna technology, applied in the direction of antennas, resonant antennas, antenna grounding devices, etc., can solve the problems of affecting the polarization purity of antennas, poor cross-polarization performance, and difficulty in satisfying lobes, and achieve light weight and low crossover Polarization, the effect of achieving symmetrical radiation

Pending Publication Date: 2020-03-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor cross-polarization performance will affect the polarization purity of the antenna. On the one hand, it will lead to a decrease in communication efficiency, and on the other hand, it will cause interference; asymmetrical lobes are difficult to meet the requirements of some applications, such as measurement, positioning, etc.

Method used

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  • Differential duplex filtering antenna with double-groove symmetrical excitation
  • Differential duplex filtering antenna with double-groove symmetrical excitation
  • Differential duplex filtering antenna with double-groove symmetrical excitation

Examples

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Embodiment

[0043] Such as figure 1 with figure 2 As shown, a dual-slot symmetrically excited differential duplex filter antenna includes an upper dielectric substrate 1, a lower dielectric substrate 2, a metal floor 3, a first metal feeding microstrip line 5, and a second metal feeding microstrip line 12 , Metal rectangular radiation patch 4, coupling gap 6, metal microstrip resonator 7, and first metal microstrip open resonant ring 8, second metal microstrip open resonant ring 9, third metal microstrip open resonant ring 10, The fourth metal microstrip split resonant ring 11;

[0044] The upper dielectric substrate 1, the metal floor 3 and the lower dielectric substrate 2 are glued together. The metal floor 3 is embedded between the upper dielectric substrate 1 and the lower dielectric substrate 2; the metal floor 3 is engraved with two parallel coupling gaps 6;

[0045] The metal rectangular radiation patch 4 is attached to the upper surface of the upper dielectric substrate 1, and the cen...

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PUM

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Abstract

The invention discloses a differential duplex filtering antenna with double-groove symmetrical excitation. The antenna comprises an upper dielectric substrate, a lower dielectric substrate, a metal floor, a first metal feed microstrip line, a second metal feed microstrip line, a metal rectangular radiation patch, a coupling gap, a metal microstrip resonator, a first metal microstrip split-ring resonator, a second metal microstrip split-ring resonator, a third metal microstrip split-ring resonator and a fourth metal microstrip split-ring resonator. According to the invention, a compact structure is used, functions of radiation, duplex synthesis, channel filtering, differential feeding and balance-unbalance conversion are realized at the same time, and good cross polarization performance, lobe symmetry and duplex filtering radiation capability are ensured.

Description

Technical field [0001] The invention relates to the field of wireless communication antennas, in particular to a dual-slot symmetrically excited differential duplex filter antenna. Background technique [0002] In recent years, the design of highly miniaturized and integrated RF front-end modules has become a future development trend. Therefore, the design of small and highly integrated RF front-end systems has also attracted the attention of researchers. With people's in-depth research on the bandwidth broadening, cross-polarization, frequency selectivity and radiation performance of filter antennas, it has also laid the foundation for the research of duplex antennas. In a duplex antenna, the same antenna is used for signal reception and signal transmission, so the duplex antenna can not only reduce the cost, but also reduce the volume of the system. [0003] Traditionally, the antenna and the duplexer are designed separately, and finally the design of the filter antenna is reali...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q5/10H01Q9/04
CPCH01Q1/38H01Q1/48H01Q1/50H01Q5/10H01Q9/0407H01Q9/045
Inventor 谢泽明伍泽科
Owner SOUTH CHINA UNIV OF TECH
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