Resonance method of measurement of input impedance of any broadwall-launched discontinuity in microstrip transmission line

1986 ◽  
Vol IM-35 (2) ◽  
pp. 126-129
Author(s):  
Chinmoy Das Gupta ◽  
R. S. Tomar
Keyword(s):  
Transmission Line ◽  
Input Impedance ◽  
Resonance Method ◽  
Microstrip Transmission Line ◽  
Method Of Measurement

STUDIES OF ARTERIAL INPUT IMPEDANCE IN MODELS OF CAROTID ARTERY

2003 ◽  
Vol 03 (01) ◽  
pp. 9-19 ◽  
Author(s):  
K. KAŁUŻYŃSKI ◽  
T. POWAŁOWSKI ◽  
B. LEŚNIAK ◽  
Z. TRAWIŃSKI ◽  
T. PAŁKO ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Transmission Line ◽  
Input Impedance ◽  
Carotid Bifurcation ◽  
Lumped Element ◽  
Measurement And Analysis ◽  
Invasive Method ◽  
Method Of Measurement ◽  
Line Elements

A non-invasive method of measurement and analysis of the arterial input impedance of the carotid artery was applied to silicone models of the normal and stenosed carotid bifurcation. The experimental setup enabled the simulation of in vivo conditions. The experimental results were compared with impedance computed for a lumped element electrical model and a model containing transmission line elements. The stenosis resulted in increased impedance moduli and phase values. Similar phenomena were observed for both computational results. However, the transmission line model yielded phase plots closer to the experimental ones. The method of measurement and analysis of the arterial input impedance appears to be an efficient tool for the assessment of the properties of the carotid bifurcation.

scholarly journals Nonlinearity and wide-band parametric amplification in a (Nb,Ti)N microstrip transmission line

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
S. Shu ◽  
N. Klimovich ◽  
B. H. Eom ◽  
A. D. Beyer ◽  
R. Basu Thakur ◽  
...  
Keyword(s):  
Transmission Line ◽  
Wide Band ◽  
Parametric Amplification ◽  
Microstrip Transmission Line

scholarly journals Frequency reconfigurable monopole antenna with DGS for ISM band applications

2018 ◽  
Vol 69 (4) ◽  
pp. 293-299 ◽  
Author(s):  
Boddapati T. P. Madhav ◽  
Shaik Rajiya ◽  
Badugu P. Nadh ◽  
Munuswami S. Kumar
Keyword(s):  
Dielectric Constant ◽  
Wireless Communication ◽  
Transmission Line ◽  
Ground Plane ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Microstrip Transmission Line ◽  
Ism Band ◽  
Frequency Reconfigurable Antenna ◽  
Antenna Model

Abstract In this article a compact frequency reconfigurable antenna is presented for wireless communication applications of industrial, scientific and medical band (ISM). The proposed antenna model is designed with the dimensions of 58mm×48 mm on FR4 epoxy of dielectric constant 4.4 with the thickness of 0.8 mm. The proposed antenna consists of defected T-shape ground plane, which acts as a reflector. In the design of frequency reconfigurable antenna, BAR 64-02V PIN diodes are used as switching elements and antenna is fed by microstrip transmission line. The proposed antenna can switch at different frequencies (2.5 GHz, 2.3 GHz and 2.2 GHz) depending on the biasing voltage applied to the PIN diodes. The current antenna showing VSWR < 2 in the operating band and providing peak realized gain of 3.2 dBi. A good matching obtained between expected and the measured results.

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