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- Title
Compact Bandpass Filter with Sharp Out-of-band Rejection and its Application.
- Authors
Lixue Zhou; YingZeng Yin; Wei Hu; Xi Yang
- Abstract
A novel compact bandpass filter considered as the harmonic suppression circuit is designed in this paper. Because of the application of a T-shaped structure, the filter is improved in performance and reduced in size. Two transmission zeros at passband edge can be conveniently adjusted by changing the length of the open stubs located at the center of the T-shaped structure. Two filters with different open-stub structures are designed. Good agreement between the simulation and the measurement is acquired, which verifies the theoretical predictions. Benefiting from this feature, an active frequency multiplier with the proposed filter as the output matching network is designed. When input signal is set to be 6 dBm, output power of the second harmonic varies from 6 to 8 dBm with 20 dBc suppression for the first, third and fourth harmonics.
- Subjects
BANDPASS filters; HARMONIC suppression filters; T-shaped radio interferometers; TRANSMISSION zeros; ANALOG multipliers
- Publication
Applied Computational Electromagnetics Society Journal, 2017, Vol 32, Issue 3, p249
- ISSN
1054-4887
- Publication type
Article