W-band high-gain zero-dispersion glass-based microstrip array antenna

A microstrip array, high-gain technology, applied to antennas, antenna arrays, and individually powered antenna arrays, etc., can solve problems such as inconsistent beam pointing, unacceptable frequency domain dispersion, and affecting imaging quality of imaging systems.

Active Publication Date: 2021-05-18
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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Problems solved by technology

However, the series-fed microstrip array antenna has obvious dispersion due to the aperture transition, and the beams corresponding to different operating frequencies in the broadband working mode are inconsistent, which affe...

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  • W-band high-gain zero-dispersion glass-based microstrip array antenna
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  • W-band high-gain zero-dispersion glass-based microstrip array antenna

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] An embodiment 1 of the present invention is a W-band high-gain zero-dispersion glass-based microstrip array antenna, including 16 serially fed microstrip patch subarrays 1 and 1 set of hybrid feed networks, such as figure 1 shown.

[0024] Each serial-fed microstrip patch sub-array 1 includes at least 2 radiation patches, and the interval between adjacent patches is 1λg (λg is the center frequency waveguide wavelength), which can ensure that each serial-fed microstrip patch sub-array 1 All the patches are in a phase synchronization state; preferably, in another embodiment 2, each serially fed microstrip patch sub-array 1 includes 26 radiating patches. The hybrid feed network includes one 1-to-8 unequal power divider 2 and eight 1-to-2 equal-power dividers 3. The spacing of each branch in the 1-to-8 unequal power d...

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Abstract

The invention discloses a W-band high-gain zero-dispersion glass-based microstrip array antenna, and belongs to the technical field of antennas. The W-band high-gain zero-dispersion glass-based microstrip array antenna sequentially comprises a radiation patch layer, a glass substrate and a reflecting plate layer from top to bottom, and the radiation patch layer comprises 16 series-fed microstrip patch subarrays and a set of hybrid feed network; each series-fed microstrip patch subarray comprises at least two radiation patches, the interval between the adjacent patches is 1 lambda g, and lambda g is the wavelength of a center frequency guide wave; the hybrid feed network comprises a one-to-eight unequal power divider 2 and eight one-to-two equal power dividers 3; and the spacing of each branch port in the one-to-eight unequal power divider is an integer multiple of the spacing of the wavelength of the guide wave. The antenna can improve the limitations of large feeder network loss, chromatic dispersion of beam pointing and the like of the current common microstrip array antenna, and is suitable for a high-precision real-time imaging system.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a W-band high-gain zero-dispersion glass-based microstrip array antenna. Background technique [0002] In recent years, the demand for high-precision real-time imaging systems in the field of security inspection and security is increasing day by day. Benefiting from shorter wavelengths and larger bandwidths, W-band real-time imaging systems are more popular. In order to be able to form a high-precision real-time image of the target to be measured, this type of system needs to have narrow beam characteristics, and for this reason it needs to be equipped with a large antenna aperture. In previous studies, the commonly used solution is to use parallel-fed microstrip array antennas. However, due to the long transmission path of the parallel-fed network, large feeder loss will occur, which affects the gain of the array antenna, and then affects the effectiveness of the real-time ima...

Claims

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Application Information

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IPC IPC(8): H01Q21/06H01Q21/00H01Q1/50H01Q1/38
CPCH01Q21/065H01Q21/0006H01Q1/50H01Q1/38Y02D30/70
Inventor 李斌张金平邓晔周志鹏孙磊
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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