Non-foster circuit for wideband matching of high frequency helical antenna

Qi Tang, Hao Xin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper adopts normalized determined function (NDF) to analyze the stability of a non-Foster matched antenna. A -40 pF negative capacitor is achieved at high frequency (HF). The negative capacitor is connected to the input of a 2-meter height helical antenna for wideband cancellation of the large input reactance of the antenna at HF. Nyquist plots of NDFs are used to evaluate the stability of the non-Foster system with and without the stabilization resistor. The performance of input matching and efficiency improvement by non-Foster matching circuit is measured. The received signal power level can be increased by 20-30 dB from 3 to 13 MHz compared to without matching case, and about 15 dB improvement compared to a commercial well-matched HF antenna.

Original languageEnglish (US)
Title of host publication2017 IEEE MTT-S International Microwave Symposium, IMS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages352-355
Number of pages4
ISBN (Electronic)9781509063604
DOIs
Publication statusPublished - Oct 4 2017
Event2017 IEEE MTT-S International Microwave Symposium, IMS 2017 - Honololu, United States
Duration: Jun 4 2017Jun 9 2017

Other

Other2017 IEEE MTT-S International Microwave Symposium, IMS 2017
CountryUnited States
CityHonololu
Period6/4/176/9/17

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Keywords

  • Electrically small antenna
  • HF
  • Non-Foster circuit
  • Normalized determinant function
  • Stability analysis
  • Wideband matching

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Tang, Q., & Xin, H. (2017). Non-foster circuit for wideband matching of high frequency helical antenna. In 2017 IEEE MTT-S International Microwave Symposium, IMS 2017 (pp. 352-355). [8059118] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2017.8059118