TY - JOUR
T1 - Lossy-transmission-line analysis of frequency reconfigurable rectangular-ring microstrip antenna
AU - Nugroho, Bambang Setia
AU - Zulkifli, Fitri Yuli
AU - Rahardjo, Eko Tjipto
N1 - Publisher Copyright:
© 2014 Bambang Setia Nugroho et al.
PY - 2014
Y1 - 2014
N2 - An analytical model for a frequency reconfigurable rectangular-ring microstrip antenna is proposed. The resonant frequencies and input impedance of the reconfigurable antenna are analyzed using a lossy-transmission-line (LTL) model. By making use of Y-admittance matrices, a formulation for the input impedance is analytically derived. The structure of the frequency reconfigurable antenna consists of a rectangular-ring shaped microstrip antenna which is loaded with a rectangular patch in the middle of the rectangular-ring antenna and fed by a microstrip line. RF switches are applied to connect the load to the antenna in order to reconfigure the operating frequencies. By modeling the antenna into a multiport equivalent circuit, the total input impedance is analytically derived to predict the resonant frequencies. To verify the analysis, the model input impedance and reflection coefficient calculation have been compared with the full-wave simulation and measurement results. The proposed model shows good agreement with full-wave simulated and measured results in the range of 1-3 GHz.
AB - An analytical model for a frequency reconfigurable rectangular-ring microstrip antenna is proposed. The resonant frequencies and input impedance of the reconfigurable antenna are analyzed using a lossy-transmission-line (LTL) model. By making use of Y-admittance matrices, a formulation for the input impedance is analytically derived. The structure of the frequency reconfigurable antenna consists of a rectangular-ring shaped microstrip antenna which is loaded with a rectangular patch in the middle of the rectangular-ring antenna and fed by a microstrip line. RF switches are applied to connect the load to the antenna in order to reconfigure the operating frequencies. By modeling the antenna into a multiport equivalent circuit, the total input impedance is analytically derived to predict the resonant frequencies. To verify the analysis, the model input impedance and reflection coefficient calculation have been compared with the full-wave simulation and measurement results. The proposed model shows good agreement with full-wave simulated and measured results in the range of 1-3 GHz.
UR - http://www.scopus.com/inward/record.url?scp=84912099688&partnerID=8YFLogxK
U2 - 10.1155/2014/303581
DO - 10.1155/2014/303581
M3 - Article
AN - SCOPUS:84912099688
SN - 1687-5826
VL - 2014
JO - International Journal of Microwave Science and Technology
JF - International Journal of Microwave Science and Technology
M1 - 303581
ER -