Frequency Hopping Filter with Improved Structure
A filter and radio frequency filter technology, applied in the field of electronic communication, can solve the problems of poor heat dissipation of components, short working life, limited function of π-type filter circuit, etc., and achieve the effect of stable operation.
Active Publication Date: 2017-11-14
GUANGDONG KUANPU TECH CO LTD
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Problems solved by technology
[0002] The shortcomings of the early high-power frequency-hopping filter design are that the insertion loss is large, the filtering effect is not good, and the heat dissipation of the components is poor, which leads to a short working life. Designed to dissipate heat; the existing high-power frequency-hopping filter products are bulky and costly to manufacture
However, we found that because the switching frequency of the high-voltage drive circuit is only one-fifth of the resonant frequency of the resonator, which is a very low frequency, the effect of the π-type filter circuit is very limited, otherwise the switching speed will be affected
Method used
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Embodiment Construction
[0032] The structure applying the frequency hopping filter of the present invention will be further described below in conjunction with the accompanying drawings.
[0033] As shown in the figure, a frequency hopping filter 100 with an improved structure has a radio frequency operating frequency above 30 MHz, including a metal shell 1, a resonant coil 51 arranged in the metal shell 1, and a switching diode array circuit A diode circuit board 55 with a resonant capacitor, a choke coil 43, a radio frequency filter circuit board 41 provided with a filter capacitor, a high voltage drive circuit 31 and a digital control circuit 32, wherein the resonant coil 51 and the resonant capacitor mainly form a resonator, The filter capacitor and the choke coil 43 mainly constitute a radio frequency filter circuit. The sequential signal control flow chart between the resonator, switching diode array circuit, radio frequency filter circuit, high voltage drive circuit 31 and digital control circ...
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A frequency hopping filter with an improved structure, including a metal shell, a resonator, a switching diode array circuit, a high-voltage drive circuit and a digital control circuit; the resonator and the switching diode array circuit form the first working unit and are simultaneously arranged in the metal shell. In the first accommodation cavity, the high-voltage driving circuit and the digital control circuit form the second working unit and are simultaneously arranged in the second accommodation cavity in the metal shell; it also includes a radio-frequency filter circuit with a choke coil, and the high-voltage drive circuit passes through the radio-frequency filter circuit. The electrical signal is connected to the switch diode array circuit, and the radio frequency filter circuit forms the third working unit and is arranged in the third accommodation chamber in the metal shell; the first, second and third accommodation chambers are respectively isolated from each other. This can not only independently shield the radio frequency signal, but also prevent the noise signal and heat in the first accommodation cavity from affecting the radio frequency filter circuit and the choke coil, greatly improving the working stability of the three working units .
Description
technical field [0001] The present invention relates to the field of electronic communication, in particular to a frequency hopping filter, which is generally installed at the output port of a power amplifier of a transmitter to effectively filter out useless transmission clutter frequencies and prevent other transmission The wireless interference signal of the machine enters the local transmitter, and the frequency hopping filter belongs to the band-pass filter. Background technique [0002] The shortcomings of the early high-power frequency-hopping filter design are that the insertion loss is large, the filtering effect is not good, and the heat dissipation of the components is poor, which leads to a short working life. Designed to dissipate heat; existing high-power frequency-hopping filter products are bulky and costly to manufacture. For this reason, the application number is 200910040262.X, and the name is a patented invention of a frequency hopping filter, which disc...
Claims
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IPC IPC(8): H03H5/00H03H1/00
Inventor文俊
OwnerGUANGDONG KUANPU TECH CO LTD