Full-wave design and realization of multicoupled dual-mode circular waveguide filters

1995 ◽  
Vol 43 (6) ◽  
pp. 1290-1297 ◽  
Author(s):  
J.R. Montejo-Garai ◽  
J. Zapata
Keyword(s):  
Circular Waveguide ◽  
Dual Mode ◽  
Full Wave ◽  
Waveguide Filters

A Systematic Design Procedure of Classical Dual-Mode Circular Waveguide Filters Using an Equivalent Distributed Model

2012 ◽  
Vol 60 (4) ◽  
pp. 1006-1017 ◽  
Author(s):  
Santiago Cogollos ◽  
Maria Brumos ◽  
Vicente E. Boria ◽  
Carlos Vicente ◽  
Jordi Gil ◽  
...  
Keyword(s):  
Design Procedure ◽  
Circular Waveguide ◽  
Distributed Model ◽  
Systematic Design ◽  
Dual Mode ◽  
Waveguide Filters

scholarly journals Correction of manufacturing deviations in waveguide filters and manifold multiplexers using metal insertions

2015 ◽  
Vol 7 (3-4) ◽  
pp. 219-227 ◽  
Author(s):  
Santiago Cogollos ◽  
Carlos Carceller ◽  
Mariam Taroncher ◽  
Vicente E. Boria ◽  
Marco Guglielmi ◽  
...  
Keyword(s):  
High Power ◽  
Circular Waveguide ◽  
Microwave Filters ◽  
Mapping Technique ◽  
Alternative Technique ◽  
Dual Mode ◽  
Space Applications ◽  
Small Deviations ◽  
Radiation Losses ◽  
Waveguide Filters

Microwave filters and multiplexers commonly employ tuning screws to compensate for small errors occurring during the fabrication process. Nevertheless, the use of tuning screws has some disadvantages, because the small gaps between the screws and the holes are prone to create unwanted effects when dealing with high-power signals, especially for space applications, and are also the source of potential radiation losses. In this paper, an alternative technique to correct manufacturing deviations is presented, in which tuning screws are replaced by fixed metal insertions. In this case, the correction is made by means of designing new insertion pieces that will be able to correct those small deviations. In order to find the dimensions of the new pieces, a space-mapping technique is applied. For verification purposes, the method has been applied over a circular-waveguide dual-mode filter and later over a manifold multiplexer containing the same type of filters. However, the technique can be directly extended to other types of waveguide filters and multiplexers where tuning screws are also employed.

scholarly journals Dual-mode circular waveguide filters without tuning screws

1992 ◽  
Vol 2 (11) ◽  
pp. 457-458 ◽  
Author(s):  
M. Guglielmi ◽  
R.C. Molina ◽  
A.A. Melcon
Keyword(s):  
Circular Waveguide ◽  
Dual Mode ◽  
Waveguide Filters

Design of Dual Mode AVA with Enhanced Radiation Characteristics

2021 ◽  
Author(s):  
Sathishkumar N ◽  
Nandalal V ◽  
Rajesh Natarajan
Keyword(s):  
Dual Mode ◽  
Radiation Characteristics ◽  
Pin Diodes ◽  
Full Wave ◽  
Working Principle ◽  
Vivaldi Antenna ◽  
Peak Gain

Abstract Dual mode antipodal Vivaldi antenna (AVA) with narrowband to wideband switching is proposed in this work. The antenna has the footprint of 60 mm x 40 mm x 1.6 mm and FR-4 substrate used for fabrication. The antenna exhibits 8.3 GHz bandwidth in wideband mode with a peak gain of 6.9 dBi and 1.6 GHz bandwidth in narrowband mode with a peak gain of 7 dBi. The simulations are performed using CST full wave simulator and the results are compared with the reference antenna of the same dimensions. PIN diodes are implemented to achieve the frequency switching. The working principle of the antenna is explained through simulation and verified through measurements.

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