Antenna device for radio monitoring and direction finding and control method thereof
A technology for radio monitoring and antenna devices, which is applied to direction finders using radio waves, antenna grounding devices, radio wave direction/deviation determination systems, etc., can solve complex implementation methods, low efficiency of direction finding, and long response time of rotating antennas and other problems to achieve the effect of improving direction finding efficiency and reducing cost and volume
Inactive Publication Date: 2021-09-17
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0003] At present, radio monitoring and direction finding are connected by different antenna devices, and the structure is relatively complicated
[0004] Using the amplitude ratio method for radio direction finding, the antenna radiation direction can be changed by artificially rotating the directional antenna, which is simple to implement, but the response time of the rotating antenna is long and the direction finding efficiency is low; it can also be realized by comparing the signal amplitudes on the receiving channels of adjacent antennas Direction finding, direction finding efficiency is high, but multiple receiving channels are required, and the implementation method is relatively complicated
Method used
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] Such as figure 1 As shown, the ultra-wideband antenna provided by the embodiment of the present invention includes: FR4 dielectric board 1, metal ellipse radiation patch 2, metal microstrip feeder 3, metal ground plate 4; the metal ellipse radiation patch, metal microstrip line and two metal grounding plates are printed on the front of the FR4 dielectric board; the metal microstrip feeder on the front of the dielectric board extends from the metal elliptical radiation patch to the bottom of the FR4 dielectric board for Connect the metal elliptical radiation patch and the signal line; the two metal ground plates are located on both sides of the microstrip line and are rectangular in shape. The bottom end of the metal ground plate is aligned with the bottom end of the FR4 dielectric plate, and the outside of the metal ground plate is ali...
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The invention discloses an antenna device for radio monitoring and direction finding and a control method thereof. The antenna device comprises an ultra-wideband antenna and a cylindrical antenna housing. The ultra-wideband antenna is located in the center of the antenna housing and is composed of a dielectric plate, an elliptical radiation patch, a microstrip feeder line and a grounding plate. A plurality of columns of metal patches are arranged on the outer surface of the antenna housing at equal intervals, and a radio frequency diode is welded between every two adjacent metal patches in each column for connection. The control method of the antenna device comprises the steps that negative voltage is applied to all the diodes, the diodes are cut off, and at the moment, the antenna device can conduct radio omni-directional monitoring; by controlling the working states of the diodes at different positions on the surface of the antenna housing, planar 360-degree beam scanning is realized for radio directional monitoring and direction finding. Through combination of the antenna device and the control method, electrically controllable 360-degree beam scanning with omnidirectional radiation and rapid switching and integration of radio monitoring and the direction finding antenna device are realized, the cost and the size of the radio direction finding device can be reduced, and meanwhile, the direction finding efficiency is improved.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to an antenna device for radio monitoring and direction finding and a control method thereof. Background technique [0002] With the rapid development of wireless communication, the electromagnetic environment in space is becoming more and more complex, and radio monitoring and direction finding are essential. [0003] At present, radio monitoring and direction finding are connected by different antenna devices, and the structure is relatively complicated. [0004] Using the amplitude ratio method for radio direction finding, the antenna radiation direction can be changed by artificially rotating the directional antenna, which is simple to implement, but the response time of the rotating antenna is long and the direction finding efficiency is low; it can also be realized by comparing the signal amplitudes on the receiving channels of adjacent antennas Direction finding, direct...
Claims
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Login to View More IPC IPC(8): H01Q1/38H01Q1/42H01Q1/48H01Q9/04H01Q13/08G01S3/14
CPCH01Q1/42H01Q1/38H01Q1/48H01Q9/0407H01Q13/08G01S3/14
Inventor 洪卫军
Owner BEIJING UNIV OF POSTS & TELECOMM