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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: [email protected]
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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

REFERENCES

[1] de Assuncao, E.P.; de Menezes, L.R.A.X.; Abdalla, H. Jr.: Microwave multiplexers using complementary triplexer filters, in Int. Microwave and Optoelectronics Conf. SBMO/IEEE MTT-S, APS and LEOS – IMOC '99, vol. 1, 1999 169–173.Google Scholar
[2] Wilkinson, E.J.: An N-way hybrid power divider. IRE Trans. Microw. Theory Tech., 8 (1) (1960), 116–118.Google Scholar
[3] Collin, R.E.: Foundations of Microwave Engineering, 2nd ed., Wiley, New York, 2001, chapter 3, 99, 170–175, chapter 6, 427–432.Google Scholar
[4] Pozar, D.M.: Microwave Engineering, 3rd ed., Wiley, New York, 2005, chapter 4, 189–196, 204, chapter 7, 323–348.Google Scholar
[5] Weiss, J.A.: Dispersion and field analysis of a microstrip meander-line slow-wave structure. IEEE Trans. Microw. Theory Tech., 22 (12) (1974), 1194–1201.Google Scholar
[6] Huang, C.W.P.; Elsherbeni, A.Z.; Chen, J.J.; Smith, C.E.: FDTD characterization of Meander line antennas for RF and wireless communication. Prog. Electromagn. Res., PIER 24, (1999), 185–199.Google Scholar
[7] Sugiura, T.: Analysis of distributed-lumped strip transmission line. IEEE Trans. Microw. Theory Tech., MTT-25 (8) (1977), 656–661.CrossRefGoogle Scholar
[8] March, S.L.: Phase velocity compensation in parallel-coupled microstrip. IEEE Trans. Microw. Theory Tech., (1982), 410–412.Google Scholar
[9] Rehnmark, S.: Meander-folded coupled line. IEEE Trans. Microw. Theory Tech., MTT-26 (4) (1978), 225–230.CrossRefGoogle Scholar