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Tightly coupled ultra-wideband low-profile conformal phased array based on resistive loop loading

A resistance ring and tight coupling technology, applied in the field of tightly coupled ultra-broadband low-profile conformal phased array and its development, can solve the problems of high profile, insufficient working bandwidth, unfavorable conformation, etc., to reduce the profile, expand the low-frequency bandwidth, Improve the effect of wideband matching

Active Publication Date: 2022-03-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to propose a method of enhancing capacitive coupling, loading a resistive frequency-selective structure, and using The power divider plus double balun feed structure realizes the profile height of 0.53 high-frequency wavelengths and the bandwidth of fL-8fL, and the working mode is double-linear polarization, which can realize 45-degree angle scanning

Method used

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  • Tightly coupled ultra-wideband low-profile conformal phased array based on resistive loop loading
  • Tightly coupled ultra-wideband low-profile conformal phased array based on resistive loop loading
  • Tightly coupled ultra-wideband low-profile conformal phased array based on resistive loop loading

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Embodiment Construction

[0025] specific implementation plan

[0026] like figure 1 As shown, this embodiment is based on a tight-coupled ultra-wideband low-profile conformal phased array loaded by a resistive ring, consisting of crossed dipoles printed on a double-layer dielectric board, coupled parasitic patches 101, and a polarized symmetric resistive ring structure 200 It consists of a Marchand balun 300 connecting the power splitter and the dipole, a microstrip power splitter 400 placed on a curved floor, and a metal floor 500 with a certain curvature.

[0027] The antenna dielectric substrates are all common dielectric substrates. The radiation patch layer 100 is a two-layer dielectric substrate pressed together. The feed balun is a stripline structure composed of double-layer dielectric boards pressed together. The floor is made of carbon fiber material with double-sided copper coating. The ground on the back of the microstrip power divider and the floor need to be welded together, and holes...

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Abstract

The invention discloses a tightly coupled ultra-wideband low-profile conformal phased array and a development method based on resistance ring loading. By proposing a method of enhancing capacitive coupling, improving the traditional cross-type dipole, loading a resistive frequency-selective surface composed of microstrip lines and lumped resistors between the antenna radiation patch and the floor, and expanding the antenna working bandwidth. Applying a power divider plus a double balun feed structure can achieve better matching and reduce the profile height of the antenna. The entire antenna array has been conformally processed, and the light and thin dielectric substrate is applied, and the heavy wide-angle impedance matching layer is canceled, which is lighter in weight. The metal floor is bent in a certain arc to facilitate installation on the working platform. The invention is in f L -8f L The 45-degree scanning active standing wave in the frequency band is less than 3, and the overall height of the antenna is less than 0.53 high-frequency wavelengths.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, in particular to a tight-coupled ultra-wideband low-profile conformal phased array based on resistance loop loading and a development method thereof. Background technique [0002] Compared with the traditional mechanical scanning antenna, the phased array antenna has the advantages of easy beamforming, arbitrarily changing the beam pointing, and easy formation of multiple beams. Ultra-wideband (UWB) phased arrays have attracted much attention in multifunctional applications, which utilize multiple beams, polarizations, and frequency bands to achieve different functions. [0003] Traditional ultra-wideband antenna units generally have relatively large horizontal or vertical dimensions, and it is difficult to achieve low profile, conformal, thin and light design and many other problems. Based on the above disadvantages, a new type of tightly coupled antenna has emerged in recent years....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/36H01Q1/48H01Q1/50H01Q5/307H01Q5/328H01Q5/50H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/50H01Q1/36H01Q1/48H01Q5/307H01Q5/50H01Q5/328H01Q21/062H01Q21/0006
Inventor 杨仕文鲍雨生杨锋黄明朱军乔文昇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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