A Frequency Reconfigurable Microstrip Antenna Based on Ring Radiating Patch
A radiation patch, microstrip antenna technology, applied in the field of antennas, can solve the problem of component loading, etc., to achieve the effect of wide bandwidth, stable radiation performance, and low profile
Active Publication Date: 2020-07-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[0004] When a PIN diode is used as a controllable device, the diode can be soldered in the slot of the radiation patch on the upper surface of the dielectric substrate, such as "A Design of Frequency Reconfigurable Antenna, Zhao Xuan, Zou Chuanyun, Jiang Yong, Microcomputer and Application , 2015,34(22)", however, in the process of designing the radiation patch by this method, the shape and structure of the radiation patch may be modified under the premise of sacrificing the performance of the antenna in order to adapt to the size of the PIN diode; the The method of connecting PIN diodes to the ground plane slots on the lower surface of the dielectric substrate has been realized, such as "Miniature Frequency Reconfigurable Microstrip Slot Antenna, Patent Application No. 201510260485.2", but the above method not only needs to slot the ground plane and Connect the PIN diode in the slot, and for the antenna designed with a small ground plane area, it is difficult to load all the components on the ground plane
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0034] This embodiment provides a frequency reconfigurable microstrip antenna product based on a circular radiation patch, and its front structure schematic diagram, rear structural schematic diagram and side structural schematic diagram are as follows Figures 1 to 3 shown.
[0035] The on-off of the three PIN diodes 45, 46, and 47 is controlled respectively by controlling the on-off of the three groups of DC voltage sources, so that the effective length of the antenna radiation changes, thereby changing the resonant frequency of the antenna, and opening the slots 33, 34, and 35 , 36, 37, 38, 39, 40, 41, 42, 43, 44 are used to isolate DC current, capacitors 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 , 18, 19, 20 are used to conduct AC current and isolate DC current.
[0036] The conduction and disconnection of the three PIN diodes 45, 46, 47 are c...
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Abstract
The invention discloses a frequency reconfigurable microstrip antenna based on an annular radiation patch, which belongs to the technical field of antennas. In the present invention, the position of the PIN diode is transferred from the upper surface of the dielectric substrate to the lower surface through the metallized through hole, and the capacitor is still welded on the radiation patch on the upper surface of the dielectric substrate, without slotting on the ground plate, and does not affect the radiation The shape of the patch and the slotting method have undergone major changes, but the essence is still that the PIN diode works between the radiation patch gaps on the upper surface of the dielectric substrate. The structural design of the radiation patch of the present invention does not need to be restricted by the size of the PIN diode, thereby improving the performance of the antenna.
Description
technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a frequency reconfigurable microstrip antenna based on an annular radiation patch. The antenna uses a PIN diode as a controllable device and can work in three frequency bands. Background technique [0002] With the rapid development of modern communication, communication equipment is becoming more and more powerful and complex. When multiple antennas are required to work at the same time, not only will the work space be crowded, but the antennas may interfere with each other, affecting the Antenna performance. The application of frequency reconfigurable antennas can provide a solution to the above problems. [0003] The frequency reconfigurable antenna changes the structure of the antenna by loading one or more controllable devices, so that the working frequency band of the antenna can be reconfigured within a certain range, while keeping other performance parameter...
Claims
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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q13/08H01Q23/00
Inventor 张宣铭段兆云汪菲王新李肖意王战亮巩华荣宫玉彬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA