Phase shift combiner for multi-channel VHF communication

E. Holdengreber, M. Mizrahi, E. Glassner, Y. Koral, S. E. Schacham, E. Farber

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish
Pages (from-to)79-83
Number of pages5
JournalInternational Journal of Microwave and Wireless Technologies
Issue number1
StatePublished - 1 Feb 2017


  • Phase matching
  • Phase shifters
  • Stripline couplers
  • VHF devices


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