Yaractor-based microstrip circuits with high frequency agility and low insertion loss

Autor: Yi-Cheng Yang, Nan-Wei Chen, Hao-Chen Wang
Rok vydání: 2017
Předmět:
Zdroj: 2017 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT).
DOI: 10.1109/rfit.2017.8048230
Popis: The authors present a straightforward and effective approach for minimizing insertion loss (IL) of varactor-based frequency-agile microstrip passive circuits, where varactors are employed as elements of variable reversal capacitances to attain reconfigurabiltiy/tunability on circuit characteristics. Technically, the proposed approach mimics the required capacitances using the varactors together with the SMD capacitors/inductors rather than entirely using the varactors. With the proposed capacitance synthesis, the varactors are able to operate at a higher quality factor so that IL of the entire circuit is minimized. Also, the capacitance tuning range is further extended. With the proposed loss-reduction avenue, the circuit agility could be enhanced, and its effectiveness is experimentally demonstrated with agility enhancement of a reconfigurable bandpass filter (BPF) and a reconfigurable balun BPF.
Databáze: OpenAIRE