INPUT IMPEDANCE OF A CYLINDRICAL MICROSTRIP ANTENNA WITH AN ARBITRARY GEOMETRY RADIATOR EXCITED BY A COAXIAL LINE

2010 ◽  
Vol 69 (17) ◽  
pp. 1499-1515
Author(s):  
A. Ye. Svezhentsev
Keyword(s):  
Input Impedance ◽  
Microstrip Antenna ◽  
Coaxial Line ◽  
Arbitrary Geometry

scholarly journals Input impedance of a microstrip antenna with a chiral substrate based on left-handed spirals

2019 ◽  
Vol 2019 (19) ◽  
pp. 6218-6221
Author(s):  
Vladimir Y. Abramov ◽  
Dmitriy S. Klyuev ◽  
Anatoly M. Neshcheret ◽  
Oleg V. Osipov ◽  
Alexander A. Potapov
Keyword(s):  
Input Impedance ◽  
Microstrip Antenna ◽  
Left Handed

Input impedance of microstrip antenna with thick multilayer substrate

1990 ◽  
Vol 7 (3) ◽  
pp. 200-206
Author(s):  
Li Li ◽  
Yang Yuan ◽  
Li Ronglong
Keyword(s):  
Input Impedance ◽  
Microstrip Antenna ◽  
Multilayer Substrate

scholarly journals Lossy-Transmission-Line Analysis of Frequency Reconfigurable Rectangular-Ring Microstrip Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Bambang Setia Nugroho ◽  
Fitri Yuli Zulkifli ◽  
Eko Tjipto Rahardjo
Keyword(s):  
Transmission Line ◽  
Input Impedance ◽  
Microstrip Antenna ◽  
Reconfigurable Antenna ◽  
Resonant Frequencies ◽  
Rf Switches ◽  
Rectangular Patch ◽  
Full Wave ◽  
Lossy Transmission ◽  
Lossy Transmission Line

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.

Input Impedance, Bandwidth and Efficiency of an Edge-Modulated Microstrip Antenna

1998 ◽  
Vol 44 (1-2) ◽  
pp. 49-60 ◽  
Author(s):  
D N Khanra ◽  
S K Chowdhury ◽  
A K Mallick
Keyword(s):  
Input Impedance ◽  
Microstrip Antenna ◽  
Impedance Bandwidth
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