You are here
Customizable Antenna Array Using Reconfigurable Antenna Elements
| Title: | Customizable Antenna Array Using Reconfigurable Antenna Elements. |
 44 views 12 downloads |
|---|---|---|
| Name(s): |
Shirazi, Mahmoud, Author Gong, Xun, Committee Chair Wahid, Parveen, Committee Member Jones, W Linwood, Committee Member Abdolvand, Reza, Committee Member Kuebler, Stephen, Committee Member University of Central Florida, Degree Grantor |
|
| Type of Resource: | text | |
| Date Issued: | 2018 | |
| Publisher: | University of Central Florida | |
| Language(s): | English | |
| Abstract/Description: | A shared-aperture reconfigurable slot-ring antenna array switching between different frequency bands and polarizations is presented for phased array applications. PIN diode switches are incorporated into the slots of the antenna to change the state of the reconfigurable slot-ring antenna array. Each frequency band has its own feeding lines which allows for the use of high-performance narrow-band transmit/receive (T/R) modules instead of ultra wideband (UWB) T/R modules. Furthermore, the spacing between the elements in each frequency band is less than half free-space wavelength (?0) over the frequency band of operation which enables grating-lobe-free beam scanning. This is the first shared-aperture reconfigurable dual-polarized antenna with separate feeding for each band which is scalable to a larger array with element spacing of less than 0.5?0 in all frequency bands of operation.First, a switchable-band reconfigurable antenna array switching between L and C bands is presented. This antenna operates at 1.76/5.71 GHz with a fractional bandwidth (FBW) of 8.6%/11.5%, realized gain of 0.1/4.2 dBi and radiation efficiency of 66.6%/80.7% in the L-/C- band operating states, respectively. Second, a wideband version of the reconfigurable antenna element using fractal geometries is presented. This dual-polarized antenna element is switching between S and C bands with wide bandwidth in each operating state. In the S-/C-band operating state, this antenna shows 69.1%/58.3% FBW with a maximum realized gain of 2.4/3.1 dBi. Third, the wideband antenna element is extended to an antenna array. The reconfigurable dual-polarized antenna array with vertical coaxial feeding switches between S- and C-band states with full-band coverage. A 2(&)#215;2 S-band antenna array can be reconfigured to a 4(&)#215;4 C-band antenna array by activating/deactivating PIN diode switches. This antenna array shows 64.3%/66.7% FBW with 8.4/14.3 dBi maximum realized gain in the S-/C-band operating states, respectively. Finally, a reconfigurable antenna element covering three adjacent frequency bands is presented. The FBW of this tri-band antenna element is 75%/63%/26% in the S/C/X band state. | |
| Identifier: | CFE0007373 (IID), ucf:52092 (fedora) | |
| Note(s): |
2018-12-01 Ph.D. Engineering and Computer Science, Electrical Engineering and Computer Engineering Doctoral This record was generated from author submitted information. |
|
| Subject(s): | Reconfigurable antennas -- Phased array antennas -- Ultra wideband antennas -- PIN diode switches -- switchable band antenna arrays -- PIN diode characterization -- Multi-band antenna arrays | |
| Persistent Link to This Record: | http://purl.flvc.org/ucf/fd/CFE0007373 | |
| Restrictions on Access: | public 2018-12-15 | |
| Host Institution: | UCF |
