The rounded shape spiral transmission line phase shifter for miniaturized SAW W-CDMA antenna duplexers

Osamu Hikino, Masashi Ohki, Seima Kondo, Junichi Hamasaki, Tomohiro Endo, Takashi Shiba, Yuji Fujita, Satoru Murakami

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

The unique structure for phase shifter to duplex Rx and Tx SAWs has introduced. The phase shifter has the rounded shape spiral structure without any crossover. The phase shifter has been implemented in LTCC packages of 3.0×2.5×0.4mm (typical). The phase shifter has very low transmission loss and very low coupling since the phase shifter is almost completely shielded with the ground plate. The simulation result shows that the above mentioned phase shifter has superior insertion loss characteristics than conventional transmission line with meander structure. Using the above explained phase shifter we have fabricated SAW W-CDMA (Wideband Code Division Multiple Access) antenna duplexers for band 2 and band 5. The measurement results of the above duplexers are shown.

元の言語English
ホスト出版物のタイトル2005 IEEE Ultrasonics Symposium
ページ815-818
ページ数4
DOI
出版物ステータスPublished - 2005 12 1
外部発表Yes
イベント2005 IEEE Ultrasonics Symposium - Rotterdam, Netherlands
継続期間: 2005 9 182005 9 21

出版物シリーズ

名前Proceedings - IEEE Ultrasonics Symposium
2
ISSN(印刷物)1051-0117

Other

Other2005 IEEE Ultrasonics Symposium
Netherlands
Rotterdam
期間05/9/1805/9/21

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • これを引用

    Hikino, O., Ohki, M., Kondo, S., Hamasaki, J., Endo, T., Shiba, T., Fujita, Y., & Murakami, S. (2005). The rounded shape spiral transmission line phase shifter for miniaturized SAW W-CDMA antenna duplexers. : 2005 IEEE Ultrasonics Symposium (pp. 815-818). [1602974] (Proceedings - IEEE Ultrasonics Symposium; 巻数 2). https://doi.org/10.1109/ULTSYM.2005.1602974