Double-layer microstrip ultra-wideband filtering power divider with high selectivity and large isolation

Fan, Chi1; Wu, Bian1; Huang, Qi-Man1; Chen, Jian-Zhong1; Cheng, Qingsha S.2

2019-07

10.1002/mmce.21726

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING   影响因子和分区

1096-4290

1099-047X

In this article, a compact double-layer microstrip ultra-wideband (UWB) filtering power divider with high selectivity and isolation is proposed. The filtering power divider consists of a multimode resonator at the top layer coupled with a pair of branch lines at the bottom through a slotline in the middle ground. The slotline provides strong coupling between the two layers and equally distributes the power to two branch lines. The resistor loaded about a quarter-wavelength away from the slotline achieves high isolation within UWB range. The UWB filtering properties with controllable transmission poles and zeros as well as power splitting with enhanced isolation have been analyzed. The adjustable transmission zeros of the filter unit enables the bandwidth control of the filtering power divider. Finally, a UWB filtering power divider operating at 3.1 to 10.6 GHz has been designed, fabricated, and measured. It achieves a compact size of only 26 x 28 mm(2), high isolation about 20 dB, and good out-of-band suppression of 40 dB.

double-layer filtering power divide multimode resonator ultra-wideband

SCI ; EI

英语

其他

Shaanxi Youth Science and Technology Star Project[2017KJXX-32]

Computer Science ; Engineering

Computer Science, Interdisciplinary Applications ; Engineering, Electrical & Electronic

WOS:000470025500040

WILEY

20191206654747

Microwave filters ; Resonators ; Voltage dividers

Electric Filters:703.2 ; Electric Equipment:704.2 ; Radio Systems and Equipment:716.3

ENGINEERING

Web of Science

1.Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Shaanxi, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen, Peoples R China

Fan, Chi,Wu, Bian,Huang, Qi-Man,et al. Double-layer microstrip ultra-wideband filtering power divider with high selectivity and large isolation[J]. INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING,2019,29(7).

Fan, Chi,Wu, Bian,Huang, Qi-Man,Chen, Jian-Zhong,&Cheng, Qingsha S..(2019).Double-layer microstrip ultra-wideband filtering power divider with high selectivity and large isolation.INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING,29(7).

Fan, Chi,et al."Double-layer microstrip ultra-wideband filtering power divider with high selectivity and large isolation".INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING 29.7(2019).