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| Content Provider | IET Digital Library |
|---|---|
| Author | Wen, Zheng Tang, Ming Chun Ziolkowski, Richard W. |
| Abstract | A band- and frequency-reconfigurable circularly polarised (CP) filtenna that exhibits good selectivity and out-of-band rejection in both its wideband and continuously tunable narrowband states is reported for cognitive radio (CR) applications. The filtenna provides two switchable operational states: a wideband state from 2.52 to 3.53 GHz for sensing and a tunable state of narrowband states from 2.44 to 3.19 GHz for communications. The corresponding 3-dB axial ratio bandwidths completely overlap these impedance bandwidths. A single PIN diode is utilised to switch between these two operational states to achieve the band-reconfigurable performance. Two varactor diodes are employed to realise the frequency-reconfigurable performance by facilitating a continuous shift of the narrowband states over the operational communication frequencies. |
| Starting Page | 1003 |
| Ending Page | 1008 |
| Page Count | 6 |
| ISSN | 17518725 |
| Volume Number | 13 |
| e-ISSN | 17518733 |
| Issue Number | Issue 7, Jun (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/13/7 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5963 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2019-02-19 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antenna Radiation Pattern Axial Ratio Bandwidths Band-reconfigurable Performance Broadband Antenna Cognitive Radio Cognitive Radio Application Continuously Tunable Narrowband States Electromagnetic Wave Polarisation Frequency 2.44 GHz to 3.19 GHz Frequency 2.52 GHz to 3.53 GHz Frequency-reconfigurable Circularly Polarised Filtenna Frequency-reconfigurable Performance Impedance Bandwidths Junction And Barrier Diode Microstrip Antenna Microwave Antenna Operational Communication Frequency Out-of-band Rejection P-i-n Diode Radio Link And Equipment Single Antenna Single PIN Diode Switchable Operational State Tunable State Varactors Wideband State |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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