scholarly journals Improved dual-frequency Wilkinson power dividers with Defected Ground Structure

2011 ◽  
Vol 8 (11) ◽  
pp. 808-813 ◽  
Author(s):  
Mahsa Keshavarz Hedayati ◽  
Gholamreza Moradi ◽  
Abdolali Abdipour
Keyword(s):  
Dual Frequency ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Power Dividers ◽  
Wilkinson Power Dividers

Wideband out-of-phase power dividers with improved isolation performance

2019 ◽  
Vol 11 (08) ◽  
pp. 761-764
Author(s):  
Kaijun Song ◽  
Fei Xia ◽  
Yuxuan Chen ◽  
Yu Zhu ◽  
Jiawei Li ◽  
...  
Keyword(s):  
Return Loss ◽  
Power Divider ◽  
Band Width ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Power Dividers ◽  
Marchand Balun ◽  
Isolation Performance

AbstractA compact wideband out-of-phase power divider (PD) with improved isolation performance is proposed. This divider is formed by connecting an additional stub for isolation to output ports of a traditional Marchand balun with a defected ground structure (DGS) been used. To verify the design, a prototype divider is fabricated and tested. The measured results validate the 53.86% band-width centered at 3.43 GHz with more than 15 dB return loss at all ports, more than 17 dB isolation, respectively.

scholarly journals Dual-Frequency Two-Element Antenna Array with Suppressed Mutual Coupling

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Yantao Yu ◽  
Lijun Yi ◽  
Xiaoya Liu ◽  
Zhaokai Gu ◽  
Nadia Media Rizka
Keyword(s):  
Resonant Frequency ◽  
Antenna Array ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Coupling Effect ◽  
Dual Frequency ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Split Ring ◽  
Microstrip Antenna Array

An efficient technique utilizing the defected ground structure (DGS) to suppress the mutual coupling effect of a dual-frequency microstrip antenna array is studied. The proposed dual-frequency DGS beneath two patches includes two circular split ring slots, each of which corresponds to one resonant frequency of the patches. The characteristic of the compact DGS is theoretically and experimentally investigated. The prototypes of the patches arrays with and without the proposed DGS are fabricated. Both the simulated and measured results show that the mutual coupling between array elements has been obviously reduced at the two operating frequency bands with the implementation of the proposed DGS structure.

Sign in / Sign up

Export Citation Format

Share Document