A W-band polarization converter and isolator

Charles Dietlein, Arttu Luukanen, Zoya Popović, Erich Grossman

Research output: Contribution to journalArticleScientificpeer-review

101 Citations (Scopus)


A 95-GHz printed low-loss linear-to-circular polarizer is designed as a component of an active direct-detection millimeter-wave imaging system. The periodic printed grid structure presents different reactances to the TE and TM polarizations, resulting in equal amplitude and phase quadrature upon transmission through four parallel grids.
The polarizer is measured in both a Gaussian beam system and a plane wave system, and demonstrates an axial ratio of 0.23 dB, polarization isolation of 38 dB, and transmission loss of 0.3 dB for normal incidence.
The quarter-wave plate is characterized up to plusmn35deg off the optical axis, and exhibits an axial ratio better than 1 dB up to plusmn17deg off the optical axis.
Original languageEnglish
Pages (from-to)1804-1809
JournalIEEE Transactions on Antennas and Propagation
Issue number6
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed


  • millimeter wave devices
  • millimeter wave imaging
  • polarization


Dive into the research topics of 'A W-band polarization converter and isolator'. Together they form a unique fingerprint.

Cite this