2-D electrical interferometer: A novel high-speed quantizer

Yahya M. Tousi, Ehsan Afshari

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


In this paper, we propose a 2-D electircal interferometer as a means of high-speed data conversion. The structure is based on wave propagation in 2-D LC lattices. We will discuss the principle behind this technique, which exploits wave propagation and medium manipulation in order to take advantage of different interference patterns. This method of quantization is based on passive LC lattices that can operate at very high frequencies on a conventional CMOS process. We analyze different properties of the structure and propose the design methodology. To show the feasibility of this approach, we design a 20-GS/s 4-bit quantizer consuming 194 mW for quanization and 943 mW for an analog memory. There is good agreement between analysis and simulation.

Original languageEnglish (US)
Article number5565505
Pages (from-to)2549-2561
Number of pages13
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number10
StatePublished - Oct 2010

Bibliographical note

Funding Information:
Manuscript received December 17, 2009; revised April 15, 2010; accepted July 08, 2010. Date of publication September 07, 2010; date of current version October 13, 2010. This work was supported by C2S2, the Marco Focus Center for Circuit and System Solutions, under SRC Contract 2009-CT-2047 and by the Defense Advanced Research Projects Agency (DARPA) under a 2007 Young Faculty Award.


  • Analog-to-digital converter (ADC)
  • CMOS
  • interference lattice
  • power detector
  • quantization
  • tapering
  • wave propagation


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