Quarter-wave line terminal open circuit radio frequency lightning protection device for compensation
A lightning protection device and wavelength line technology, which is applied in the field of quarter-wavelength line radio frequency lightning protection devices, can solve problems such as low intermodulation value, achieve high intermodulation value, reduce system wiring costs, and improve equipment sensitivity
Active Publication Date: 2013-03-20
SHENZHEN HAIPENGXIN ELECTRONICS
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Problems solved by technology
[0006] The purpose of the present invention is to provide a kind of RF lightning protector for compensating the open circuit at the end of a quarter-wavelength line in order to solve the technical problems of lightning protection in multi-band and broadband radio frequency microwave systems, as well as problems such as feed protection and low intermodulation value.
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[0019] see figure 2 , the circuit in this embodiment is reciprocal, and the direction is artificially added for the convenience of description. figure 2 The circuit type shown is a coax circuit. see figure 1 , the lightning protector of Embodiment 1 includes an outer conductor 2, in which an input end 50 ohm coaxial line 1, an input end insulator 3, an input end compensation coaxial line 4, a quarter wavelength branch line 8, The output end compensation coaxial line 5, the output end insulator 6 and the output end 50 ohm coaxial line 7, the input end 50 ohm coaxial line 1 is supported by the input end insulator 3 and connected to the input end compensation coaxial line 4, the input end compensation The other end of the coaxial line 4 is respectively connected to the quarter wavelength branch line 8 and the compensation coaxial line 5 at the output end, and the other end of the compensation coaxial line 5 at the output end is connected to the 50 ohm coaxial line 7 at the ou...
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The invention provides a quarter-wave line terminal open circuit radio frequency lightning protection device for compensation, which solves the lightning protection technical problem in multiband and boradband radio frequency microwave system, and problems of power feed protection and low intermodulation value or the like. The invention includes a external conductor, in which an input end 50 ohm coaxial line, an input end insulator, an input end compensation coaxial line, a quarter-wave branch line, an output end compensation coaxial line, an output end insulator, and an output end 50 ohm coaxial line; a clearance or a gaseous discharge lamp is equipped between the end of the quarter-wave branch line and the external conductor. The invention can provide power feed protection and guarantee high intermodulation value.
Description
technical field [0001] The invention belongs to the field of lightning protectors, in particular to a quarter-wavelength radio frequency lightning protector. Background technique [0002] The radio frequency lightning arrester is an overvoltage protection circuit used in radio frequency microwave systems (such as communication systems), which can protect valuable equipment that is sensitive to voltage in the system, such as low noise amplifiers, mixers and receivers, from lightning strikes or surges damage. At the same time, it can provide protection for the power supply of the system. [0003] The RF microwave antenna feeder system is usually installed at a higher geographical position outdoors due to work needs, and it is easy to suffer from lightning strikes or induced lightning surge voltages. As long as these instantaneous overvoltages and overcurrents enter the system, the receiving equipment will be burned immediately, causing equipment even loss of personnel. With...
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IPC IPC(8): H01P1/00H01P1/219H01T4/08
Inventor 侯世淳薛永刚
Owner SHENZHEN HAIPENGXIN ELECTRONICS