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Dual-frequency dual-circularly-polarized common-caliber antenna for satellite communication

A dual circular polarization, satellite communication technology, applied in antenna coupling, antenna grounding switch structure connection, radiating element structure and other directions, can solve the problems of low port isolation, large size and space, and achieve simple overall design and light weight. , to achieve the effect of impedance matching

Active Publication Date: 2021-07-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a dual-frequency dual-circular-polarization common-aperture antenna for satellite communication to solve the problems of existing circular-polarization antennas, which have relatively large size space and poor port isolation. low technical issues

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  • Dual-frequency dual-circularly-polarized common-caliber antenna for satellite communication
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  • Dual-frequency dual-circularly-polarized common-caliber antenna for satellite communication

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Embodiment

[0056] as attached Figure 1-6 As shown, this embodiment provides a dual-frequency dual-circular polarization common-aperture antenna for satellite communications, including a first dielectric substrate 1, a second dielectric substrate 2, and a third dielectric substrate 3; the first dielectric substrate 1, The second dielectric substrate 2 and the third dielectric substrate 3 are stacked sequentially from bottom to top; the feeding network structure is printed on the bottom of the first dielectric substrate 1, and the metal ground 12 is printed on the top; low-frequency radiation is printed on the top of the second dielectric substrate 2. In the unit 21, a high-frequency radiation unit 31 is printed on the third dielectric substrate.

[0057] In this embodiment, the feeding network structure printed under the first dielectric substrate includes a low-frequency port feeding network structure and a high-frequency port feeding network structure; wherein, the low-frequency port f...

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Abstract

The invention discloses a dual-frequency dual-circularly-polarized common-aperture antenna for satellite communication. The dual-frequency dual-circularly-polarized common-aperture antenna comprises a first dielectric substrate, a second dielectric substrate and a third dielectric substrate which are sequentially stacked from bottom to top; the bottom surface of the first dielectric substrate is provided with a feed network structure, and the top surface is provided with a metal ground; a low-frequency radiation unit is arranged on the top surface of the second dielectric substrate; a high-frequency radiation unit is arranged on the top surface of the third dielectric substrate; the feed network structure comprises a low-frequency port feed network structure and a high-frequency port feed network structure, and band-pass filtering structures are arranged in the feed network structures respectively; and the high-frequency and low-frequency port feed network structures are connected with the high-frequency and low-frequency radiation units through the slot coupling structures respectively. According to the invention, the high port isolation is realized by introducing the band-pass filtering structure, the feed network structure is connected with the radiation unit through the slot coupling structure, and impedance and axial ratio bandwidth are improved by introducing the slot coupling structure; the high-frequency and low-frequency radiation units are designed in a layered manner, so that the overall size of the antenna is reduced; the overall design is simple and the weight is light.

Description

technical field [0001] The invention belongs to the technical field of wireless communication antennas, in particular to a dual-frequency dual-circular polarization common-aperture antenna for satellite communication. Background technique [0002] The antenna is the core equipment in a communication system. As a device for receiving and transmitting electromagnetic waves, it plays an increasingly important role in modern radio communication systems; however, the use of the electromagnetic spectrum is gradually becoming saturated. In the small size and complex electromagnetic environment, designing an antenna with high gain and multi-band coverage has become an important problem to be solved; at the same time, with the increasing integration of electronic equipment, the miniaturization and broadband of antennas are also research hotspots today. . [0003] In radio communication systems, circularly polarized antennas can not only receive circularly polarized waves correspondi...

Claims

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Application Information

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IPC IPC(8): H01Q1/52H01Q1/38H01Q1/50
CPCH01Q1/50H01Q1/52H01Q1/38
Inventor 李建星陈娟胡鹏贺雨晨张安学
Owner XI AN JIAOTONG UNIV
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