A Surface Impedance Model for a Microstrip-line based Metasurface

2017 ◽  
Author(s):  
B. Cappello ◽  
G. Labate ◽  
L. Matekovits
Keyword(s):  
Surface Impedance ◽  
Microstrip Line ◽  
Impedance Model

A Frequency Reconfigurable Antenna based on Few Layer Graphene

2021 ◽  
Vol 36 (5) ◽  
pp. 542-547
Author(s):  
Sheng-lan Wang ◽  
Jing-Song Hong ◽  
Yan Deng ◽  
Zhi-jian Chen
Keyword(s):  
Experimental Evidence ◽  
Bias Voltage ◽  
Direct Current ◽  
Surface Impedance ◽  
Microstrip Line ◽  
Reconfigurable Antenna ◽  
Layer Graphene ◽  
Direct Current Bias ◽  
Few Layer Graphene ◽  
Frequency Reconfigurable Antenna

In this paper, a frequency reconfigurable antenna was presented. This antenna is made up of a square loop and a microstrip line with a gap, in which the few layer graphene (FLG) sheet is located to achieve frequency reconfigurable. FLG is likes a lumped resistor with resistance. And the surface impedance can be adjusted by applying a direct current bias voltage, which obtains two work modes that imitate switch. Additionally, the experimental evidence show the proposed frequency reconfigurable antenna can provide a tunable bandwidth.

Indirect in situ and free-field measurement of impedance model parameters or surface impedance of porous layers

1993 ◽  
Vol 39 (1-2) ◽  
pp. 77-117 ◽  
Author(s):  
Craig Hutchinson-Howorth ◽  
Keith Attenborough ◽  
Nicholas W. Heap
Keyword(s):  
Field Measurement ◽  
Surface Impedance ◽  
Free Field ◽  
Model Parameters ◽  
Impedance Model ◽  
Porous Layers

Deriving a Lumped Element Surface Impedance Model for Periodic Arrays of Graphene Micro-Rings

2019 ◽  
Vol 18 ◽  
pp. 445-452 ◽  
Author(s):  
Maryam Sadat Amiri Naeini ◽  
Mohsen Maddahali ◽  
Ahmad Bakhtafrouz
Keyword(s):  
Surface Impedance ◽  
Impedance Model ◽  
Periodic Arrays ◽  
Lumped Element
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