A W-band quasi-TEM waveguide using electromagnetic crystal (EMXT) surfaces

Hao Xin, Te Chuan Chen

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A W-band (75 - 110 GHz) quasi-TEM square waveguide is designed and realized utilizing two-dimensional electromagnetic crystal (EMXT) surfaces as its boundary walls. Because EMXT surfaces provide special boundary conditions, the waveguide size is not limited by the typical cut-off frequency associated with a regular metallic waveguide and free space like wave propagation can be achieved for both polarizations. Both eigenmode and full-wave EM simulations verify the quasi-TEM propagation at the designed frequencies. The S-parameters of the EMXT waveguide in a WR-10 fixture is measured and low insertion loss that agrees with simulation is obtained. This type of waveguides may be useful for applications including spatial power combining, low loss interconnects, and packaging for millimeter wave systems.

Original languageEnglish (US)
Article number4014973
Pages (from-to)606-609
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
StatePublished - 2006
Event2006 IEEE MTT-S International Microwave Symposium Digest - San Francisco, CA, United States
Duration: Jun 11 2006Jun 16 2006


  • Electromagnetic crystals
  • Millimeter wave devices
  • Periodic structure
  • Waveguides

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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