A miniaturized broadband bow-tie antenna with improved cross-polarization performance
| Autor: | Karumudi Rambabu, Jui-Wen Ting, Daniel Oloumi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Coaxial antenna business.industry Antenna measurement Antenna aperture Electrical engineering 020206 networking & telecommunications 02 engineering and technology Antenna factor Antenna efficiency Radiation pattern 03 medical and health sciences 0302 clinical medicine Optics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Antenna (radio) business Monopole antenna 030217 neurology & neurosurgery |
| Zdroj: | AEU - International Journal of Electronics and Communications. 78:173-180 |
| ISSN: | 1434-8411 |
| DOI: | 10.1016/j.aeue.2017.04.016 |
| Popis: | In this paper, a modified broadband bow-tie antenna with low cross-polarization level and miniaturization is presented. The cross-polarization in both E- and H-planes are suppressed by defecting the antenna flares using rectangular slots. The proposed modified antenna demonstrated a cross-polarization improvement over ± 120 ° around the boresight from 2 to 5 GHz. In addition, an overall 23.5% of miniaturization compared to conventional bow-tie antenna is achieved. A tapered feed transition between microstrip-to-parallel stripline is designed to match 50 ohm SMA connector to the antenna flares. A prototype of the modified antenna is fabricated on RO4003 substrate ( e r = 3.38, tan δ = 0.0027, h = 0.813 mm), and its performance is experimentally studied. The antenna’s characteristics including return loss, gain and radiation pattern are measured, along with the time domain characteristics, and showed reasonable agreement with the simulated results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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