A dual-band power divider using parallel strip line with high isolation

作者：Jin, J. Y.; Lin, X. Q.^*; Gao, X.; Zhuang, X.; Fan, Y.

来源：Journal of Electromagnetic Waves and Applications, 2012, 26(11-12): 1594-1601.

DOI：10.1080/09205071.2012.705765

• COUPLED-LINE
• TRANSMISSION-LINES
• SUPPRESSION

The transmission characteristics of the parallel strip lines (PSLs) are studied. Then a novel dual-band power divider using PSLs is introduced. It consists of four pi-form arms and one 180 degrees phase swap structure. The pi-form arms are capable of achieving ideal impedance matching at two different frequency bands with an arbitrary power dividing ratio k: The 180 degrees phase swap structure is frequency independent, which is used to obtain high port to port isolation. Theoretical analysis and general design procedure of this power divider with arbitrary k and F (central frequency ratio of two different frequency bands) are presented. Then, a sample operating at 1.3 and 3.5 GHz with k = 1 and F = 2. is fabricated and tested. Experimental results show that this power divider operates at the designed dual frequency bands, and the isolation is more than 20 dB. Good agreements among theoretical, simulated, and experimental results are obtained.

• 出版日期2012
• 单位电子科技大学