scholarly journals Appendix 3: Specifications of Selected Coaxial Lines and Waveguides

2003 ◽  
pp. 560-562
Keyword(s):  
Coaxial Lines

scholarly journals Calculation of a non-reflective connection in a coaxial line

2021 ◽  
Vol 29 (1) ◽  
pp. 99-104
Author(s):  
V. M. Morozov ◽  
V. I. Magro
Keyword(s):  
Integral Equation ◽  
Reflection Coefficient ◽  
Coaxial Line ◽  
Integral Equation Method ◽  
Coaxial Waveguide ◽  
Equation Method ◽  
System Of Equations ◽  
T Wave ◽  
Significant Difference ◽  
Coaxial Lines

The calculation of the non-reflective connection in the coaxial line is performed by the integral equation method. The connection of coaxial lines with a significant difference in geometric dimensions is considered. A system of equations is obtained that allows calculating the reflection coefficient of the T-wave from such an inhomogeneity. This technique makes it possible to calculate a multistage coaxial waveguide in order to minimize the reflection coefficient from inhomogeneities.

Compact Waveguide-Based Power Divider Feeding Independently Any Number of Coaxial Lines

2007 ◽  
Vol 55 (5) ◽  
pp. 951-957 ◽  
Author(s):  
Jrme Pollak ◽  
Michel Moisan ◽  
Zenon Zakrzewski ◽  
Jacques Pelletier ◽  
Y. A. Arnal ◽  
...  
Keyword(s):  
Power Divider ◽  
Coaxial Lines ◽  
Compact Waveguide

scholarly journals Very Low Crosstalk Measurement of Substrate Integrated Coaxial Line (SICL)

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1174
Author(s):  
Lu ◽  
Yang ◽  
Yin ◽  
Zhao ◽  
Liu
Keyword(s):  
Coplanar Waveguide ◽  
Reference Value ◽  
Coaxial Line ◽  
Calculation Formula ◽  
Frequency Range ◽  
Practical Design ◽  
Measured Frequency Range ◽  
Coaxial Lines ◽  
First Time ◽  
Better Than

When designing a microwave circuit involving substrate integrated coaxial lines (SICLs), it is important to know what real crosstalk between SICLs is. A measured crosstalk will be a good reference value in a practical design. In addition, it is also needed to compare and check the crosstalk from the simulation and calculation formula with measured results. However, it is very difficult to measure the crosstalk between SICLs because it is theoretically very low. In this study, for the first time, the crosstalk characteristics of a SICL are evaluated through experimental design and measurements. By adjusting the layout of the structures and implementing controlled experiments, interference caused by the presence of leaks and radiation at the interface and structural transitions is effectively suppressed. The experimental results show that for two parallel SICLs with a length of 30 mm and an interval of 5 mm, the isolation is greater than 80 dB for the measured frequency range of 1–8 GHz, significantly better than the results of the grounded coplanar waveguide (GCPW).

scholarly journals Quadruple-Mode Wideband Bandpass Filter with Improved Out-of-Band Rejection

Electronics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 300 ◽  
Author(s):  
Musab Hameed ◽  
Gaobiao Xiao ◽  
Ali Najam ◽  
Lina Qiu ◽  
Tayyab Hameed
Keyword(s):  
Rectangular Waveguide ◽  
Bandpass Filter ◽  
Transverse Magnetic ◽  
Center Frequency ◽  
Fractional Bandwidth ◽  
Compact Size ◽  
Coaxial Lines ◽  
Good Agreement

This paper proposes a method for designing a quadruple-mode wideband bandpass filter using off-centered perturbed metallic cylinders in a rectangular waveguide cavity with compact size and improved out-of-band rejection. Two off-centered perturbation cylinders were placed at the bottom of the rectangular waveguide cavity along with a pair of perpendicularly-fed coaxial lines, which excited four quasi-transverse magnetic (TM) modes to realize the desired passband. The height of the waveguide cavity and the shape of the perturbation cylinders were exploited to achieve an all quasi-TM modes filter with good out-of-band rejection and sharp skirt selectivity. The proposed filter operates at 2.93 GHz center frequency with 38% wide fractional bandwidth (FBW). The proposed filter is fabricated using aluminum. The measured and simulated results are in good agreement with each other.

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