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A Dual Frequency Monopole/Orthogonal Active Loop Antenna

A technology of monopole and loop antennas, which is applied in the direction of antenna combinations with different interactions, resonant antennas, and slender active unit end feeds, etc., which can solve the problem of high antenna cost, large footprint, and extensive restrictions Application and other issues, to achieve low cost, small footprint, and improve the effect of wave measurement accuracy

Inactive Publication Date: 2016-07-13
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The array antenna of high-frequency radar is expensive and occupies a large area, and it is difficult to find a suitable area to build such a radar antenna field on the seashore, thus limiting the wide application of this radar

Method used

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  • A Dual Frequency Monopole/Orthogonal Active Loop Antenna
  • A Dual Frequency Monopole/Orthogonal Active Loop Antenna
  • A Dual Frequency Monopole/Orthogonal Active Loop Antenna

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the embodiment shown in accompanying drawing:

[0019] A dual-frequency monopole / orthogonal active loop antenna, a waterproof box and a waterproof cover are installed on the antenna base plate; a circuit board is installed in the waterproof box, and two horizontal and orthogonal Loop antenna and monopole socket, the reverse side of the circuit board is provided with a circuit; the monopole antenna is vertically installed in the center of the waterproof cover, and inserted into the monopole socket located in the center of the circuit board;

[0020] The circuit includes a series resonant circuit LC, a mixer HJ, an amplifier IC, an anti-common mode interference module KGM, a control module KZ, a switch chip KG, and a voltage regulator module WY; the control module KZ includes an optocoupler chip GO;

[0021] The series resonant circuit LC, the mixer HJ, the amplifier IC, and the anti-common mode int...

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PUM

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Abstract

The invention provides a double-frequency monopole / orthogonal active coil antenna. A novel circuit adopted by the double-frequency monopole / orthogonal active coil antenna comprises a series resonant circuit LC, a commingler HJ, an amplifier IC, a common-mode-interference-resisting module KGM, a control module KZ and a switch chip KG, wherein the control module KZ comprises an optical coupling chip GO. Compared with the prior art, the double-frequency monopole / orthogonal active coil antenna has the advantages that due to the fact that the switch chip, the control module and the like are additionally arranged, the antenna can work at two frequencies at different time, the measurement accuracy of a high-frequency sea-detecting radar is improved, and the detection accuracy can be improved when the double-frequency monopole / orthogonal active coil antenna is used for target detection.

Description

technical field [0001] The invention relates to a sea-penetrating radar receiving antenna, in particular to a dual-frequency monopole / orthogonal active loop antenna for high-frequency sea state radar. Background technique [0002] High-frequency radars used to detect ocean surface currents, waves, and wind fields often use phased array antennas to achieve radar beam azimuth scanning. In order to increase the detection distance, the operating frequency of this radar is very low, generally a few megahertz to a dozen megahertz, and the antenna array length generally reaches hundreds of meters or even thousands of meters. The transmitting antenna is a logarithmic periodic antenna, the main tower is 40 meters high, and the distance from the center of the receiving antenna array is 800 meters. The array antenna of high-frequency radar is expensive and occupies a large area, and it is difficult to find a suitable area to build such a radar antenna field on the seashore, thus limit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/29H01Q9/32G01S13/02
Inventor 周浩杨星吴世才田应伟文必洋
Owner WUHAN UNIV
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