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Compact high gain dual-polarization differential filtering antenna

A differential filtering and high-gain technology, applied in the field of compact high-gain dual-polarized differential filtering antennas, can solve problems affecting antenna performance, large size and insertion loss, and achieve simple structure, low cross-polarization, low cost and weight Effect

Active Publication Date: 2019-03-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such an integration method still has a large size and insertion loss, which affects the performance of the antenna

Method used

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  • Compact high gain dual-polarization differential filtering antenna
  • Compact high gain dual-polarization differential filtering antenna
  • Compact high gain dual-polarization differential filtering antenna

Examples

Experimental program
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Embodiment

[0033] Combined with Figure 1, figure 2 and image 3 , a compact high-gain dual-polarized differential filter antenna of the present invention, comprising a dielectric substrate and a metal floor; the upper dielectric substrate 6 is located above the metal floor 7, and air is filled between the two;

[0034] The upper surface of the upper dielectric substrate 6 is printed with a square patch 1, and the cross slit 2 is etched on the square patch 1; the defective ground 5 structure is etched on the metal floor 7, and the defective ground structure 5 is composed of four open ring gaps 8, and the opening direction points to the metal In the center of the floor 7, the above-mentioned four split ring gaps 8 are symmetrical about the diagonal line of the metal floor 7;

[0035] The square patch 1 is differentially fed by the coaxial probe 4. The coaxial probe 4 is located near the end of the cross slit 2 of the square patch 1, and is located on the central axis of the square patch 1...

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PUM

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Abstract

The present invention discloses a differential feed dual-polarization filtering broadband antenna. The antenna comprises a dielectric substrate and a metal floor; the upper dielectric substrate is arranged above the metal floor, and air is filled between the two; the upper surface of the upper dielectric substrate is printed with a square patch, and the square patch is etched with a cross gap; themetal floor is etched with a defect structure, the defect structure is composed of four opening ring gaps, the opening direction is directed to the center of the metal floor, and the four opening ring gaps are diagonally symmetrical relative to the metal floor; and the square patch is differentially fed by a coaxial probe, and the coaxial probe is arranged near the end of the cross gap of the square patch, is arranged on the central axis of the square patch and is symmetrical relative to the center point of the square patch. The antenna provided by the present invention has a simple structure, can reduce the loss of the antenna feeding portion, is more suitable for designing with a planar antenna array, is easy to process, has a low cost and weight, and can be mass-produced.

Description

technical field [0001] The invention relates to a filter antenna, in particular to a compact high-gain dual-polarized differential filter antenna. Background technique [0002] Antennas and filters are two key components in passive circuits and play an important role in wireless communication systems. A well-designed high-performance antenna can effectively control the spatial distribution of electromagnetic energy while sending and receiving signals, optimize network quality, increase system capacity, and greatly improve overall system performance. Microwave filters play the role of selecting signals, attenuating noise, and avoiding inter-channel interference, etc., and are ubiquitous in high-performance RF active circuits such as oscillation, frequency mixing, frequency multiplication, and amplification. Antennas and microwave filters are widely used in microwave communication, radar navigation, electronic countermeasures, satellite relay and other systems, and their exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q9/04
CPCH01Q1/38H01Q1/48H01Q1/50H01Q9/045
Inventor 冯文杰荀孟祝杨琬琛车文荃陈思孟倩
Owner NANJING UNIV OF SCI & TECH
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