Electronic tunable diplexer with wide tuning range
- Resource Type
- Conference
- Authors
- Huang, Xiao-Guo; Jin-Qi Zhang; Yi-Qun Lin; Qian-Yin Xiang
- Source
- 2016 Progress in Electromagnetic Research Symposium (PIERS) Progress in Electromagnetic Research Symposium (PIERS). :3511-3514 Aug, 2016
- Subject
- Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Tuning
Varactors
Microstrip
Bandwidth
Passband
Capacitance
- Language
A varactor-based tunable diplexer with wide tuning range is proposed in this paper. The proposed diplexer consists of two varactor-loaded open-loop resonator filters. Size reduction and wide tuning range are achieved by using the varactor-loaded open-loop resonator. A simple microstrip T junction at the input and two filters responsible for the respective passbands is applied. Simulated insertion loss of our designed diplexer is obtained between 1.3 to 2.1 and 1.2 to 2.7 dB over the tuning range for Tx and Rx channels filter bands, respectively. Both filters exhibit better than 30 dB rejection in the passband of its counterpart. The varactor diode attached to both filters allow 48% and 50% center frequency tunbility in Tx and Rx filters bands, respectively.