Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-17T17:08:02.207Z Has data issue: false hasContentIssue false
  • English
  • Français

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]
Get access Rights & Permissions [Opens in a new window]

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 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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