The method of generating out-band transmission zeros in the LTCC bandpass filter

The newly proposed bandpass filter has been disclosed in this paper. This filter adopts the technology of low temperature co-fired ceramic (LTCC) to develop. To generate two transmission zeros located at two sides of the passband skirt, source-load coupling capacitor and grounded coupling inductor are utilized. Moreover, this method is applied to the multi-layered structure. Finally, the fabricated example with the LTCC technology is presented for validating the filter configuration.