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Phase shift combiner for multi-channel VHF communication

Published online by Cambridge University Press:  07 October 2015

E. Holdengreber ,
M. Mizrahi ,
E. Glassner ,
Y. Koral ,
S.E. Schacham  and
E. Farber
E. Holdengreber*
Affiliation:
Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel
M. Mizrahi
Affiliation:
Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel Department of Electrical Engineering, Bar-Ilan University, Ramat-Gan, Israel
E. Glassner
Affiliation:
Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel
Y. Koral
Affiliation:
Elbit Systems Ltd, Israel
S.E. Schacham
Affiliation:
Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel
E. Farber
Affiliation:
Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel
*
Corresponding author: E. Holdengreber Email: eldadh@ariel.ac.il
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Abstract

The growing demand for communication systems requires multi-channel solutions. However, the number of antennas in communication systems is dictated by the number of channels in each system which is limited by the available space on a broadcasting platform and by the limited available resources. We have developed a Multi-Channel Phase Control coupler in the VHF frequency range enabling a reduction in the number of antennas to a third of the original setup. The system is based on a phase shifter in a meander stripline geometry connected to each channel individually. The channels are then phase matched simultaneously to a single antenna through a computer-controlled capacitor bank connected to each phase shifter. The system performance shows a low insertion loss of 0.5 dB and a low return loss of −15 dB for the multi-channel setup.

Keywords

Phase matchingPhase shiftersStripline couplersVHF devices
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 1 , February 2017 , pp. 79 - 83
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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