Volume 16, Issue 2 (2016)
MJEE 2016, 16(2): 20-23 |
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Nejadi M R, Dalili oskouei H. A Novel Compact Frequency Reconfigurable Antenna for VHF/UHF/L-Band Airborne Applications. MJEE 2016; 16 (2) :20-23
URL: http://mjee.modares.ac.ir/article-17-11139-en.html
URL: http://mjee.modares.ac.ir/article-17-11139-en.html
1- Shahid sattari
Abstract: (8582 Views)
In this letter, we propose a novel frequency reconfigurable antenna design for aircraft and drone telecommunication that covers the applied VHF/UHF/L- bands. The proposed structure is a Reduced-Size Edge-Shorted dipole/monopole antenna and consists of metallic line, notch, and metal reflector, making it easy to combine directional, high-gain, low cross-polarization and wide bandwidth. The antenna is frequency-reconfigurable using a PIN diode switch. In the ON state, the antenna operates as a dipole-traveling antenna and covers 30–400 MHz. In the OFF state, the antenna operates as an Edge-Folded monopole antenna and covers 500–1220 MHz. This work proposes a technique for size reduction using side slot and for gain equalization using switchable folded wing based on Smart Geometry Reconfiguration. The proposed antenna has VSWR< 2 for all bands. Antenna gain is less than 1.56 dBi at 30–400 MHz and 4.56 dBi at 500–1220 MHz.
Keywords: reconfigurable antenna, UHF/VHF Bands, PIN diode, Airborne application, Edge-Shorte, side slot
Received: 2017/07/13 | Accepted: 2016/06/1 | Published: 2017/07/17
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