Broadening the Efficiency Bandwidth Product of Electrically small Antenna through Direct Antenna Modulation (DAM) Transmitting

Abstract

Direct Antenna Modulation (DAM) eliminates some of the fundamental performance restrictions of an electrically small antenna. Conventionally, small antennas are driven with a tank circuit, and modulated by simply switching the power input to the circuit. DAM, however, modulates the signal by directly switching the current on the antenna. This creates a time variation in the topology of the resonant circuit and allows DAM to surpass the fundamental limits that describe time invariant systems.

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Document Details

Document Type
Technical Report
Publication Date
Dec 04, 2017
Accession Number
AD1051611

Entities

People

  • Ethan Wang
  • Rui Zhu
  • Skyler Selvin

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antennas
  • Bandwidth
  • Capacitance
  • Capacitors
  • Circuits
  • Communication Systems
  • Electrically Small Antennas
  • Frequency
  • Frequency Shift
  • Impedance
  • Lc Circuits
  • Loop Antennas
  • Near Field
  • Radiation
  • Radiation Resistance
  • Resonant Circuits
  • Resonant Frequency

Fields of Study

  • Engineering

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Optical Physics and Photonics.