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| Content Provider | IET Digital Library |
|---|---|
| Author | Famoriji, Oluwole John Yang, Shitan Li, Yang Chen, Wenhao Fadamiro, Akinwale Zhang, Zhongxiang Lin, Fujiang |
| Abstract | Reconfigurable antenna array has received a lot of attention in present-day wireless communication systems. In this study, a simple design of a four-element circularly polarised dual-frequency reconfigurable microstrip patch antenna array for millimetre-wave applications is proposed. The sequentially rotated series–parallel stub approach is employed in the feeding network design to provide symmetrical array elements positioning, and bringing about a good axial ratio of polarisation. Additionally, a matching branch per element is employed to generate spatial flexibility for element positioning and good impedance matching. Furthermore, due to high-cost constraints of Ka-band RF switches (such as PE42524 SPDT), switches are considered as transmission lines, and are placed within the fractal slots of each elements to reconfigure the frequency. The proposed array operates in two switching states: ON and OFF. Hence, it allows dual-frequency reconfigurability of 27 and 35 GHz for the ON and OFF states, respectively. A full array prototype was then fabricated on a Rogers R5880 substrate and tested in an anechoic chamber. Simulation and measurement results corroborate quite well in general. Patch antenna array gives much better result characterised by reconfigurable behaviour with associated return loss, radiation pattern characteristics, and ˂ 3 dB axial ratio polarisation bandwidth than the single element. The proposed antenna array finds good applications in radar systems, satellite communications, and aerospace. |
| Starting Page | 1671 |
| Ending Page | 1677 |
| Page Count | 7 |
| ISSN | 17518725 |
| Volume Number | 13 |
| e-ISSN | 17518733 |
| Issue Number | Issue 10, Aug (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/13/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5973 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2019-04-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Anechoic Chamber Antenna Accessory Antenna Array Antenna Feeds Antenna Radiation Pattern Antenna Testing Associated Return Loss Dual-frequency Reconfigurability Dual-frequency Reconfigurable Microstrip Patch Antenna Array Electromagnetic Wave Polarisation Element Positioning Four-element Circularly Polarised Antenna Fractal Antenna Fractal Slot Frequency 27.0 GHz Frequency 35.0 GHz Full Array Prototype Impedance Matching Ka-band RF Switches Microstrip Antenna Array Millimetre Wave Antenna Array Millimetre-wave Application Multifrequency Antenna Network Design Polarisation Bandwidth Production Facilities And Engineering Radiation Pattern Characteristic Rogers R5880 Substrate Sequentially Rotated Series-parallel Stub Slot Antenna Array Symmetrical Array Element Positioning |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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