Broad-stopband electrically-tunable dual-frequency band-pass filter
A dual-frequency bandpass and filter technology, applied to waveguide devices, circuits, electrical components, etc., can solve problems such as high system cost, large multi-band system volume, single signal processing frequency band, etc., to simplify complexity and realize wide Stopband performance, the effect of suppressing higher harmonics and spurious interference
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[0024] A preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing:
[0025] see Figure 1 to Figure 3 , the present invention wide stopband electronically adjustable dual-band bandpass filter includes a metal microstrip line 1 on the front, a dielectric plate layer 2, a first input and output port 3, a second input and output port 4, a grounded metal through hole 5 and a reverse side of the dielectric plate Metal plating, the metal microstrip line on the front is composed of a uniform impedance resonator (Uniform Impedance Resonator, UIR) 11, a short-circuit stub 12 and an input-output coupling line 14, and the load variable between the uniform impedance line resonator 11 and the short-circuit stub 12 The capacitor diode 16 constitutes a tunable structure, and the end of the short-circuit stub 12 is grounded through the ground metal via 5 . The material of the metal microstrip line on the front side and the metal plat...
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