A same-side differentially fed substrate-integrated waveguide slot antenna

A technology of substrate integrated waveguide and slot antenna, which is applied in the direction of slot antenna, antenna grounding switch structure connection, circuit, etc., can solve the problems of long distance, loss differential signal phase and amplitude imbalance, unfavorable differential circuit integration, etc., and achieve distance Effects of shortening, good common-mode rejection, and direct integration

Active Publication Date: 2021-05-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the distance between the two ports is long, and additional conversion or transition structures need to be designed, which is not conducive to integration with differential circuits and brings certain losses and imbalances in the phase and amplitude of differential signals.

Method used

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  • A same-side differentially fed substrate-integrated waveguide slot antenna
  • A same-side differentially fed substrate-integrated waveguide slot antenna
  • A same-side differentially fed substrate-integrated waveguide slot antenna

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Experimental program
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Effect test

Embodiment 1

[0031] In this embodiment, the same-side differentially fed substrate-integrated waveguide slot antenna is in resonance at TE 120 mode, such as figure 1 , figure 2 with Figure 13 As shown, the antenna includes a first substrate-integrated waveguide cavity 31 composed of a metallized through-hole array and a differential feeding transmission line 1. The specific arrangement of the metallized through-hole array is as follows figure 1 As shown, the two transmission lines of the differential feeding transmission line 1 are located on the same side of the first substrate integrated waveguide cavity 31 and arranged symmetrically, and the two transmission lines of the differential feeding transmission line 1 pass through two coupling structures 2 (transition structures) and The first substrate integrated waveguide cavity 31 is coupled, the two transmission lines of the differential feed transmission line 1 are directly connected to the differential circuit 5 through the gold wire...

Embodiment 2

[0035] In this embodiment, the same-side differentially fed substrate-integrated waveguide slot antenna is in resonance at TE 220 mode, such as Figure 4 with Figure 5 As shown, the antenna includes a second substrate integrated waveguide cavity 32 composed of a metallized through hole array and a differential feeding transmission line 1. The specific arrangement of the metallized through hole array is as follows Figure 4 As shown, the two transmission lines of the differential feeding transmission line 1 are located on the same side of the second substrate integrated waveguide cavity 32 and arranged symmetrically, and the two transmission lines of the differential feeding transmission line 1 pass through two coupling structures 2 (transition structures) and The second substrate integrated waveguide cavity 32 is coupled, the two transmission lines of the differential feed transmission line 1 are directly connected to the differential circuit 5 through the gold wire bonding ...

Embodiment 3

[0039] In this embodiment, the same-side differentially fed substrate-integrated waveguide slot antenna adopts the method of direct bonding between the differentially grounded coplanar waveguide and the chip, as shown in Figure 7 with Figure 8 As shown, the antenna includes a third substrate integrated waveguide cavity 33 composed of a metallized through-hole array and a differential feed transmission line 1 (this embodiment is a differentially grounded coplanar waveguide transmission line). The specific arrangement of the metallized through-hole array is as follows Figure 7 As shown, the two transmission lines of the differential feeding transmission line 1 are located on the same side of the third substrate integrated waveguide cavity 33 and arranged symmetrically, and the two transmission lines of the differential feeding transmission line 1 pass through two coupling structures 2 (transition structures) and The third substrate integrated waveguide cavity 33 is coupled, t...

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Abstract

The invention discloses a same-side differential feeding substrate integrated waveguide slot antenna, which comprises a substrate integrated waveguide cavity composed of a metallized through hole array and a differential feeding transmission line for connecting a differential circuit. The two transmission lines of the electrical transmission line are located on the same side of the substrate-integrated waveguide cavity, the two transmission lines of the differential feed transmission line are connected to the substrate-integrated waveguide cavity through a transition structure, and the top layer of the substrate-integrated waveguide cavity or Several rectangular radiation slots are arranged on the bottom layer. On the basis of inheriting the common-mode suppression of the traditional opposite-side differential feeding technology, the present invention greatly shortens the distance between the antenna differential pair, has a compact overall structure, and is suitable for direct integration with the differential circuit. In addition, the application of the same-side differential feeding technology is also The substrate-integrated waveguide cavity-backed antenna can more easily excite high-order modes, realize high-gain radiation characteristics, and have high application value in practical engineering applications.

Description

technical field [0001] The invention relates to the technical field of microwave and millimeter wave antennas, in particular to a same-side differential feed type substrate integrated waveguide slot antenna. Background technique [0002] Differential circuits are widely used in communication systems due to their many advantages such as good common-mode noise rejection, high linearity and high dynamic range. In order to better integrate with differential circuits, scholars at home and abroad have proposed differential antennas in various forms. These differential antennas use differential pairs to directly feed without a balanced-unbalanced conversion structure, eliminating the need for on-chip or off-chip baluns, and realizing a fully differential architecture of the entire circuit from active to passive. Among them, the differentially fed substrate-integrated waveguide slot antenna has been widely studied and applied due to its low profile, small size, easy processing, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/18H01Q1/50H01Q1/38
CPCH01Q1/38H01Q1/50H01Q13/18
Inventor 叶凯孔商成胡三明
Owner SOUTHEAST UNIV
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