A novel dual-band ring coupler based on dual-band phase inverter

2017 ◽  
Vol 28 (4) ◽  
pp. e21226
Author(s):  
Xiao Yang ◽  
Xuchun Zhang ◽  
Zhenheng Liao
Keyword(s):  
Dual Band ◽  
Phase Inverter ◽  
Band Ring

DUAL BAND RECTANGULAR DIELECTRIC RESONATOR ANTENNA FOR WLAN APPLICATION

2016 ◽  
Vol 78 (6-2) ◽  
Author(s):  
Raghuraman Selvaraju ◽  
M. R. Kamarudin ◽  
Mohsen Khalily ◽  
Jamal Nasir ◽  
M. H. Jamaluddin.
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Strip Line ◽  
Dielectric Resonator Antenna ◽  
Ring Shape ◽  
Measured Impedance ◽  
Band Ring ◽  
5 Ghz ◽  
Rectangular Dielectric Resonator Antenna

A compact dual band ring shape rectangular dielectric resonator antenna (RRDRA) to operate at 2.4 GHz and 5 GHZ WLAN application is proposed. In this design the dielectric resonator is fed by modified 50Ω trapezoidal micro strip line situated on top of the FR4 substrate. The simulated and measured impedance bandwidth achieved at 2.4 GHZ is 12.42% (2.3149-2.6132) and 12.9% (2.21-2.52) respectively; whilst for 5 GHZ at 13% (5.1795-5.8914) and 13.2% (5.08-5.81) for S11<-10 dB. And the gain of the proposed antenna is 4.9dBi and 5.9 dBi at 2.4 GHz 5GHZ respectively. Results are simulated using Ansoft High frequency structural simulator (HFSS) for the study of impedance bandwidth, return loss, radiation pattern and antenna gain. Furthermore the antenna has been fabricated and tested. The measured characteristics of the proposed antenna are in good agreement with the simulated results. 

Dual-Band Ring Slot Antenna with Circular Polarization

2013 ◽  
Vol 55 (9) ◽  
pp. 2077-2080 ◽  
Author(s):  
Chin-Sung Lin ◽  
Li-Ting Chen ◽  
Tsair-Rong Chen ◽  
Jeen-Sheen Row
Keyword(s):  
Circular Polarization ◽  
Dual Band ◽  
Slot Antenna ◽  
Band Ring
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