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A low power consumption and wide locking-range frequency divider by two is demonstrated with dual-injection-locking. The proposed structure not only uses direct-injection, but also re-utilizes the current source as the second injector. The effectiveness of dual injection was analyzed by the vector-relationship between these two injection signals. The measured locking-range is from 10.68GHz to 14.26GHz...
A compact bandpass filter with a wide stopband has been proposed. This filter consists of two two-path coupled lines and a bandpass filter. Moreover, the two-path coupled lines employed for a wide stopband are connected at input/output ports separately. Therefore, the harmonics passed by the bandpass filter can be suppressed. A design example with 1 GHz for the central frequency is provided. In addition,...
The novel dual- and triple-passband bandpass filters are proposed in this paper. With the interdigital resonators embedded into the half-wavelength resonators, the bandpass filter with multiple passbands can be obtained easily. Moreover, by adopting the method of interdigital resonators, the passband with broader bandwidth on the higher frequency band can be obtained easily. Theoretical analyses are...
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