Abstract
AbstractIn this paper, a novel E‐plane waveguide bandpass filter with multiple transmission zeros is proposed in W‐band. The center frequency and bandwidth of this filter can be flexibly designed. Stripe line resonators and L‐shaped resonators are used in the filter. The filter contains four resonators, two of which are used to generate transmission zeros in the upper stopband, and the other two are used to generate transmission zeros in the lower stopband. These transmission zeros can enhance the out‐of‐band suppression and selectivity of the filter. And the position of the transmission zeroes can be flexibly changed as required. One sample is fabricated and measured to verify the proposed filter. The minimum insertion loss in passband is 0.6 dB. Good agreements between the simulated and measured results are achieved.
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