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Low sidelobe microstrip array antenna with filtering characteristics

A microstrip array and low sidelobe technology, which is applied in the field of low sidelobe microstrip array antennas, can solve the problems of increasing the system volume and the antenna structure does not have filtering characteristics, etc., and achieves easy integration, low cost, and easy processing and manufacturing Effect

Inactive Publication Date: 2016-05-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the antenna structure does not have filtering characteristics, and cascaded filters are required in actual use, which will inevitably increase the size of the system

Method used

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  • Low sidelobe microstrip array antenna with filtering characteristics
  • Low sidelobe microstrip array antenna with filtering characteristics
  • Low sidelobe microstrip array antenna with filtering characteristics

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as Figure 1-Figure 4 As shown, a low sidelobe microstrip array antenna with filtering characteristics includes a dielectric substrate 1, a microstrip structure 2 formed by a metal foil on the upper surface of the dielectric substrate, and a floor 3 formed by a metal foil on the lower surface of the dielectric substrate, In this embodiment, the microstrip structure includes a feed port 211 for inputting electromagnetic signals, resonators 221-225 and patch radiation units 231-238, and the resonators include first, second, third, fourth and fourth Five resonators 221-225, the feed port and the first resonator 221 are fed in a coupled manner, and the resonators 221-225 form a power-dividing feed network divided into four, by controlling the first resonator 221 and the second resonator The respective coupling strengths D1-D4 of the second to fifth resonators 222-225 then realize equal or unequal power distribution. The first to fifth resonators 221-225 are stub-loade...

Embodiment 2

[0038] Such as Figure 7 As shown, there are three resonators in this embodiment, including the first resonator 221, the second resonator 222, and the third resonator 223. The three resonators form a power distribution network divided into two, and the patch radiation unit is four One, the first resonator is coupled and connected to the feed port 211, the second and third resonators respectively form two one-to-two power distribution networks with four patch radiating units 231-234, and the patch radiating units 231-234 form two power distribution networks. 234 are placed in a row.

[0039] The 1 / 2 power distribution network formed by three resonators is an equal division network, while the 1 / 2 power distribution network formed by the second and third resonators and four patch radiation units is an unequal network.

[0040] Others are the same as in Example 1.

[0041] Figure 8 is the |S11| and gain simulation results of the antenna of the embodiment, and the 10dB return l...

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Abstract

The invention discloses a low sidelobe microstrip array antenna with filtering characteristics, which comprises a dielectric substrate. A microstrip structure is formed on the upper surface of the dielectric substrate; a ground plate is formed on the lower surface of the dielectric substrate; the microstrip structure comprises a feed port with an electromagnetic signal inputted, resonators and surface mount radiation units, the resonators are respectively in coupling connection with the feed port and the surface mount radiation units, the particularly number of resonators is three or five, the number of the corresponding surface mount radiation units is four when the number of resonators is three, the number of the corresponding surface mount radiation units is eight when the number of resonators is five, the four or eight surface mount radiation units are arranged in a row. The microstrip array antenna is easy to process and make, the cost is low, integration is easy due to a planar structure, and the antenna of the invention can be applied to multiple communication systems.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a low sidelobe microstrip array antenna with filtering characteristics. Background technique [0002] The importance of antennas in social life is increasing day by day, and in many occasions, we need antennas with low sidelobe characteristics. For example, the life detection system used in earthquake disasters, telemedicine, or the detection of ambushes in the enemy camp's hideout, etc., the target to be measured is often blocked by obstacles and it is difficult to detect, the system must have a strong anti-interference ability, the antenna is To reduce clutter entering the system through side lobes, it must have low side lobes. [0003] The Chinese patent application number is 201120509188.4, and the patent name is vertically polarized directional printed filter antenna. It discloses a microstrip filter antenna structure, which is mainly composed of two parts, namely the upper part of t...

Claims

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Application Information

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IPC IPC(8): H01Q21/28H01Q23/00
CPCH01Q21/28H01Q23/00
Inventor 陈付昌胡豪涛
Owner SOUTH CHINA UNIV OF TECH
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