Post constraint revisited

Werner S. Weiglhofer, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The purpose of this review letter is to trace the history of the so-called Post Constraint (PC): from its first appearance in the early 1960s, to its rediscovery and extended interpretation starting with our oral presentation at Chiral'94, to the status quo in March 1998. Here we (i) reiterate arguments for and against the validity of the PC; (ii) discuss experimental work aimed at producing a nonreciprocal bi-isotropic (NRBI) material (e.g., following the recipe given by Tellegen); and (iii) provide a comprehensive survey of available publications on the PC.

Original languageEnglish (US)
Pages (from-to)276-279
Number of pages4
JournalAEU-Archiv fur Elektronik und Ubertragungstechnik
Issue number4
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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