Multioctave frequency selective surface reflector for ultrawideband antennas
- Publisher:
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Publication Type:
- Journal Article
- Citation:
- IEEE Antennas and Wireless Propagation Letters, 2011, 10, pp. 219-222
- Issue Date:
- 2011-04-06
Closed Access
Filename | Description | Size | |||
---|---|---|---|---|---|
ACCEPTED Multioctave_Frequency_Selective_Surface_Reflector_for_Ultrawideband_Antennas.pdf | 646.51 kB |
Copyright Clearance Process
- Recently Added
- In Progress
- Closed Access
This item is closed access and not available.
In this letter, we demonstrate the gain enhancement of an ultrawideband (UWB) antenna, achieved using an appropriately designed multioctave dual-layer frequency selective surface (FSS) reflector. The proposed novel FSS reflects effectively in phase over a bandwidth of about 120%. Hence, significant enhancement in antenna gain has been achieved with a low-profile configuration without compromising the impedance bandwidth of the UWB antenna. The proposed FSS reflector has a low transmission coefficient and linearly decreasing phase over an ultra-wide frequency band, which is the key requirement for providing an effectively in-phase reflection at the antenna plane. The composite structure is compact, with a total height of λ/4, where λ is the free-space wavelength at the lowest operating frequency of 3 GHz. Experimental results show an impedance bandwidth of 122%. The antenna gain is maintained around 7.5 dBi from 3 to 7 GHz. Between 714 GHz, the antenna is more directie with a gain of about 9 dBi with ± 0.5 dB variation. Experimental measurements confirm the predicted wideband antenna performance and gain enhancement due to the FSS reflector. © 2011 IEEE.
Please use this identifier to cite or link to this item: