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| Content Provider | IET Digital Library |
|---|---|
| Author | Karmakar, Anirban Bhattacharjee, Anindita Saha, Anuradha Bhawal, Abhirup |
| Abstract | A novel fractal inspired antipodal Vivaldi antenna is proposed for wideband applications. A step-by-step procedure has been employed to design and optimise the performance of the proposed antenna. First, a conventional antipodal Vivaldi antenna (CAVA) is designed as a reference antenna and then a Koch fractal-shaped parasitic lens is introduced in the CAVA. Finally, a fractal-shaped dielectric lens has been added as an extension of the antenna substrate. The presence of parasitic fractal lens in the flare aperture and fractal dielectric lens enhances the antenna bandwidth and also improves field coupling between the antenna arms and produces stronger radiation in the end fire direction which in turn increases the gain and directivity of the antenna. The optimised antenna is fabricated and tested showing∣S 11∣ below −10 dB from 4.2–42 GHz band. The dimension of the proposed antenna is 186 × 66 × 1.524 mm3. Results show that ∣S11∣ characteristics and other parameters are in good agreement with the simulation counterpart. |
| Starting Page | 892 |
| Ending Page | 897 |
| 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.2018.5360 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2019-02-11 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antenna Accessory Antenna Arms Antenna Bandwidth Antenna Feeds Antenna Radiation Pattern Antenna Substrate Broadband Antenna CAVA Conventional Antipodal Vivaldi Antenna Enhanced Radiation Characteristic Fractal Antenna Fractal Dielectric Lens Fractal Inspired Antipodal Vivaldi Antenna Fractal-shaped Dielectric Lens Frequency 4.2 GHz to 42.0 GHz Koch Fractal-shaped Parasitic Lens Lens Antenna Microwave Antenna Noise Figure 10.0 DB Optimised Antenna Parasitic Fractal Lens Reference Antenna Single Antenna UHF Antenna Ultra Wideband Antenna Wideband Application |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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