A COMPACT MICROSTRIP DIPLEXER USING COMPOSITE RIGHT-/LEFT-HANDED TRANSMISSION LINE WITH ENHANCED HARMONIC SUPPRESSION

作者：Xu, He-Xiu^*; Wang, Guang-Ming; Liang, Jian-Gang; Li, Tian-Peng

来源：Microwave Journal, 2011, 54(11): 112-+.

In this article, a novel microstrip diplexer operating at 1.8 GHz (GSM band) and 2.2 GHz, based on composite right-/left-handed transmission line (CRLH TL), is presented. The CRLH TL, using only one cell, is initially proposed based on Koch-shaped extended complementary single split ring resonator pair (K-ECSSRRP) etched in the ground plane and a series capacitive gap etched in the conductor strip. The extended Koch ring has been demonstrated, resulting in a wideband harmonic suppression, enhanced frequency selectivity and a lower operating frequency of the diplexer. The high performance of the new structure enables the single cell to be well qualified for diplexer design and thus facilitates the compactness. The design concept has been verified by both numerical and experimental results of a fabricated prototype whose effective occupied area is only 15.6 x 28 mm.

• 出版日期2011-11
• 单位中国人民解放军空军工程大学