抄録
Using the method of moments, we analyze three types of series-fed array antennas for circular polarization. First, we present a reference antenna's radiation characteristics with symmetrical dual loops fed by balanced parallel lines. Next, we modify the symmetrical dual loops into asymmetrical ones to enhance a circularly polarized (CP) wave bandwidth. It is found that the modified antenna has a bandwidth of 35% for a 3 dB gain-drop criterion, where the axial ratio is less than 3 dB. Finally, we use unbalanced parallel lines for feeding the asymmetrical dual loops to simplify the feed system. It is revealed that the antenna shows a CP wave bandwidth of 19%, which is twice as wide as that of the reference antenna.
| 本文言語 | English |
|---|---|
| 論文番号 | 9336228 |
| ページ（範囲） | 478-482 |
| ページ数 | 5 |
| ジャーナル | IEEE Antennas and Wireless Propagation Letters |
| 巻 | 20 |
| 号 | 4 |
| DOI | |
| 出版ステータス | Published - 2021 4月 |
ASJC Scopus subject areas
- 電子工学および電気工学