Broadband Omnidirectional Electric Field Probe Based on Koch Fractal Antenna
A fractal antenna and broadband technology, applied in the field of omnidirectional electric field probes, can solve problems such as unsatisfactory frequency response, and achieve the effect of good antenna sensitivity, stable performance, and improved low-frequency response characteristics
Active Publication Date: 2017-06-16
XIDIAN UNIV
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Problems solved by technology
[0005] In view of the insufficient frequency response of the electric field probe in the low frequency band in the prior art, the object of the present invention is to provide a broadband omnidirectional electric field probe based on Koch fractal antenna with good low frequency response characteristics
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[0044] like figure 1 , figure 2 and image 3 As shown, the 0.1MHz~3GHz broadband omnidirectional electric field probe of the embodiment of the present invention includes a dipole antenna 1, a radio frequency detection diode 2, a shaping filter network 3, a dielectric substrate 4, a twisted pair transmission line 5, an in-line resistor 6, and an insulating shell 7. Insulation pole 8 and signal processing circuit 9.
[0045] A pair of dipole antennas 1 is arranged on each dielectric substrate 4 , there are 3 dielectric substrates 4 and 3 pairs of dipole antennas 1 , and the 3 dielectric substrates 4 form a hollow triangular prism whose bottom surface is equilateral triangle. The dipole antenna of the present invention is a Koch fractal antenna, and the dipole antenna 1 on a dielectric substrate 4 and the dipole antenna 1 on the adjacent dielectric substrate 4 are orthogonally arranged to ensure that the probe can evenly receive Electromagnetic waves from all directions in spac...
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Broadband omnidirectional electric field probe based on Koch fractal antenna, including insulating shell, insulating support rod, and dielectric substrate. A pair of dipole antennas are arranged on each dielectric substrate; the dipole antenna is a Koch fractal antenna, and the bottom surface is surrounded by 3 dielectric substrates It is a hollow triangular prism of an equilateral triangle, and the dipole antenna on one dielectric substrate is arranged orthogonally to the dipole antenna on the adjacent dielectric substrate, and a radio frequency is connected between the antenna arms of each pair of dipole antennas. Detection diode; on the dielectric substrate, a shaping filter network composed of microstrip lines arranged in parallel is arranged. The front end of the microstrip line is connected to the antenna arm of the dipole antenna and connected to the end of the radio frequency detection diode. The microstrip line The rear end is connected to the microstrip line on the adjacent dielectric substrate through the in-line resistor, and the output end of the shaping filter network is connected to the twisted-pair transmission line; the twisted-pair transmission line is connected to the signal processing circuit after passing through the insulating support rod. The low frequency response characteristic of the present invention is good.
Description
technical field [0001] The invention belongs to the technical field of field strength detection sensors, in particular to an omnidirectional electric field probe used for space electromagnetic radiation measurement. Background technique [0002] Since the discovery of electromagnetic waves, it has had a profound impact on human society, and wireless transmission of signals has been obtained, and related radio technologies have emerged like a prairie fire. At first, radio was mainly used in maritime navigation, sending messages between land and ships through Morse telegraphy. Today, radio has many application fields and forms: from broadcasting and television in daily life, mobile communication, satellite navigation, network information, health care, to monitoring and identification, missile guidance, electronic countermeasures in national defense and military, and to urban internal Ultra-high voltage power transmission provides many convenient conditions for the progress an...
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IPC IPC(8): G01R29/08H01Q1/22H01Q1/38
Inventor 郭宏福侯华楠刘高高吕福胜
Owner XIDIAN UNIV