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Conformal Vivaldi antenna-based composite polarization sensitive array device

A polarization-sensitive array and antenna technology, which is suitable for antennas on movable objects, antenna grounding switch structure connection, radiation unit cover, etc., to achieve the effect of compact structure, good impedance matching, and suitable for engineering realization

Inactive Publication Date: 2018-06-15
HARBIN INST OF TECH AT WEIHAI
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AI Technical Summary

Problems solved by technology

Overall, the research on signal processing of radar polarization-sensitive arrays is still in its infancy. For complex targets, complex environments, and model mismatch conditions, radar polarization-sensitive array space-time-polarization adaptive matching reception, robust Research work on adaptive beamforming and highly fault-tolerant multidimensional parameter estimation needs to be carried out urgently

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  • Conformal Vivaldi antenna-based composite polarization sensitive array device
  • Conformal Vivaldi antenna-based composite polarization sensitive array device
  • Conformal Vivaldi antenna-based composite polarization sensitive array device

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Embodiment

[0052] The present invention designs a specific active-passive composite polarization-sensitive array structure device based on conformal ultra-wideband Vivaldi antenna, uses full-wave electromagnetic simulation software to perform performance simulation and optimal design of the antenna array, and the simulation experiment results verify the present invention Feasibility and effectiveness of the proposed polarization-sensitive array antenna device.

[0053] Figure 10 with Figure 11 The designed coplanar waveguide fed planar ultra-wideband Vivaldi antenna at frequency f 1 place and f 2 Simulation results of the radiation pattern at . At the two operating frequency points, the designed conformal UWB Vivaldi antenna has gains of about 5.29dB and 5.24dB respectively, and the main radiation direction is greater than 20dB, which has good linear polarization characteristics. at frequency f 1 At , the half-power beamwidths of the designed ultra-wideband Vivaldi antenna are abo...

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Abstract

The invention relates to the technical field of a polarization sensitive array antenna sensor, in particular to conformal Vivaldi antenna-based composite polarization sensitive array device. The conformal Vivaldi antenna-based composite polarization sensitive array device is characterized in that a dielectric antenna cover is arranged, a connection ring is arranged at a bottom end of the antenna cover, a flexible dielectric substrate is arranged in the antenna cover, a dual-polarization radiator, a passive antenna and an active antenna are further arranged, a Vivaldi-shaped exciter of a cavitybacked dual-polarization waveguide aperture antenna is provided with a metal floor, a feeding microstrip, a dielectric substrate and a grounding semi-circular resonant cavity, and the impedance matching of the Vivaldi-shaped dual-polarization exciter is achieved by a joint effect of the semi-cylindrical resonant cavity and a rectangular waveguide cavity. The invention proposes a carrier-based conformal coplanar waveguide feeding ultra-wideband Vivaldi antenna structure, the integral design of the antenna cover and the antenna is achieved, and the conformal Vivaldi antenna-based composite polarization sensitive array device has the remarkable advantages of compact structure and the like and is applicable to engineering.

Description

Technical field: [0001] The invention relates to the technical field of polarization-sensitive array antenna sensors, in particular to a compound polarization-sensitive array device based on a conformal Vivaldi antenna. Background technique: [0002] In electronic warfare, the passive radar seeker is the key component for the missile to capture and track the target. During the direction finding process, the seeker is required to have a larger instantaneous field of view, higher angle measurement accuracy and angle resolution, and a faster speed. direction finding speed. The direction-finding techniques commonly used in modern anti-radiation seekers include the ratio-amplitude method, the phase interferometer, and the ratio-amplitude interferometer. Passive radar guidance mainly has the following points: (1) The attack frequency coverage is wide, and the passive radar jamming head equipped on the missile has a wide operating frequency, covering the frequency band of anti-rad...

Claims

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Application Information

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IPC IPC(8): H01Q13/02H01Q1/42H01Q1/50H01Q1/28
CPCH01Q13/02H01Q1/28H01Q1/42H01Q1/50
Inventor 宋立众田修稳王静
Owner HARBIN INST OF TECH AT WEIHAI
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