Filter for suppressing 5G signal interference and television antenna
A signal interference and filter technology, applied in the field of antenna equipment, can solve the problems of poor 5G signal suppression, high cost, large size, etc., and achieve the effect of low debugging difficulty, low cost, and improved inductance Q value
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Embodiment 1
[0028] Such as figure 1 As shown, a filter for suppressing 5G signal interference includes a high-frequency filter circuit with a coil 200 suspended in a conductive isolation cavity as an inductance, and a combination of a conductive isolation cavity and the dielectric therein and the coil 200 as a capacitor .
[0029] This embodiment provides a new type of filter circuit, including a conductive isolation cavity and a dielectric therein, and a coil 200 suspended in the conductive isolation cavity. The coil 200 itself is the inductance of the high-frequency filter circuit. The isolation cavity forms two conductors close to each other, and the air medium or other types of dielectrics in the small space between them form a non-conductive insulating medium, which together constitute a new type of capacitor. In short, the coil 200 is both an inductor and a conductor forming a capacitor in the high frequency filter circuit. The distribution parameter formed by the coil, the conduc...
Embodiment 2
[0032] Such as figure 2 As shown in the figure, a filter for suppressing 5G signal interference includes several high-voltage filters connected in parallel with the coil 200 suspended in the conductive isolation cavity as the inductance, and the combination of the conductive isolation cavity and the dielectric therein and the coil 200 as the capacitance. frequency filter circuit.
[0033] This embodiment provides a new type of filter circuit, including a conductive isolation cavity and a dielectric therein, and a coil 200 suspended in the conductive isolation cavity. The coil 200 itself is the inductance of the high-frequency filter circuit. The isolation cavity forms two conductors close to each other, and the air medium or other types of dielectrics in the small space between them form a non-conductive insulating medium, which together constitute a new type of capacitor. In short, the coil 200 is both an inductor and a conductor forming a capacitor in the high frequency fi...
Embodiment 3
[0036] As the improvement scheme of embodiment 2, such as Figure 4 As shown, the two ends of the transmission line 310 are the signal input end and the signal output end respectively, and the transmission line 310 close to the signal output end is also connected with an LC filter circuit arranged on the circuit board 300 . Adding an LC filter circuit after the high-frequency filter circuit can filter out the high frequency lower than the 5G signal again, which is beneficial to improve the signal quality. Preferably, the LC filter circuit is a low-pass filter circuit 400, including several parallel resonant circuits connected in series. Adding the low-pass filter circuit 400 after the high-frequency filter circuit can filter out the frequencies after 750 MHz again, which is beneficial to obtain better quality signals. The circuit board 300 also has a grounding line 320 wound around the edge of the circuit board 300 , and the grounding line 320 is connected to the conductive s...
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