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| Content Provider | IET Digital Library |
|---|---|
| Author | Ma, Xiao Yang, Feng Yang, Peng Wang, Rui Yan, Yi |
| Abstract | The coaxial slotted-cavity antenna is an easily-manufactured, novel high-power microwave antenna developed specifically for its compact and shaped-beam characteristics. It can directly cascade with the high-power microwave source, and radiate linear-polarisation electromagnetic wave without extra power dividers and mode converters, which obtains a low profile. In this study, a double-layer coaxial cavity operating in two high-order modes is introduced to eliminate the high-order interference modes caused by structural discontinuities, and three shaped beams on the compact aperture can be achieved by the polarisation cancellation technique. Unique proprieties of three shaped beams, namely the peak of gain enhancement beam, the ripple of Gaussian beam and the null depth of conical beam are investigated, all of which can be controlled by the rotation angle of three phase adjusted slot pairs. This study demonstrates the design process of such antenna, and verifies it against simulation and experimental results. The measured return-loss of all three shaped beams are higher than 13 dB, while the corresponding radiation efficiencies are not lower than 98.9%. Furthermore, the estimated minimum power capacity of such antenna exceeds 1.26 GW at 9.375 GHz, making it a highly potential candidate in application towards high-power microwave. |
| Starting Page | 578 |
| Ending Page | 585 |
| Page Count | 8 |
| ISSN | 17518725 |
| Volume Number | 14 |
| e-ISSN | 17518733 |
| Issue Number | Issue 7, Jun (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/14/7 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2019.0961 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2020-02-14 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antenna Accessory Antenna Feeds Antenna Radiation Pattern Coaxial Waveguides Compact Aperture Compact Beam Characteristic Compact Coaxial Slotted-cavity Feed Antenna Conical Beam Double-layer Coaxial Cavity Electromagnetic Wave Polarisation Estimated Minimum Power Capacity Extra Power Divider Frequency 9.375 GHz Gain Enhancement Beam Gaussian Beam High-order Interference Mode High-order Mode High-power Microwave Antenna High-power Microwave Source Highly Potential Candidate Linear-Polarisation Electromagnetic Wave Microwave Antenna Mode Converter Phase Adjusted Slot Pairs Polarisation Cancellation Technique Power Divider Shaped Beam Shaped-beam Characteristic Shaped-beam Pattern Single Antenna Slot Antenna Slotted-cavity Antenna Waveguide And Microwave Transmission Line Component |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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