Miniaturized broadband band-pass filter based on spiral resonators
A bandpass filter and spiral resonator technology, applied in resonators, waveguide devices, circuits, etc., can solve problems such as unavoidable grounding, reduce filter size, increase coupling strength between resonators, etc., and achieve easy broadband characteristics, improved stop-band rejection, and the effect of increasing the smaller size
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0025] Such as figure 1 As shown, the present invention provides a miniaturized wideband bandpass filter based on a spiral resonator, which is implemented in the form of a microstrip, including a microstrip substrate, a bottom layer and a top layer microstrip circuit, wherein the microstrip substrate is formed on On the bottom ground, the top-level microstrip circuit is formed on the microstrip substrate; wherein, the top-level microstrip circuit includes an input tap 5, an output tap 6 and a resonator column, and the resonator column is connected to the input tap 5 and the output tap 6 between. The relative dielectric constant of the microstrip substrate is 1-100, and the thickness is 0.05-5mm. The miniaturized broadba...
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