Wide-stop-band LTCC band-pass filter based on frequency selectivity coupling technology
A frequency-selective, band-pass filter technology, used in waveguide-type devices, resonators, electrical components, etc., can solve the problems of large insertion loss and large size, and achieve the suppression of the third harmonic, compact structure, and good frequency selection. sexual effect
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[0025] In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings, but the implementation of the present invention is not limited thereto.
[0026] Such as figure 1 As shown, the embodiment of the present invention provides a wide stopband LTCC second-order bandpass filter based on frequency selective coupling technology. The entire filter is an LTCC multilayer structure consisting of four dielectric substrates and four conductor layers: The first conductor layer is located on the surface of the first dielectric substrate, the second conductor layer is located between the first dielectric substrate 1 and the second dielectric substrate 2, the third conductor layer is located between the second dielectric substrate 2 and the third dielectric substrate 3, and the second conductor layer is located be...
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