High-Frequency Active Transmit/Receive Antenna

High-Frequency Active Transmit/Receive Antenna

HRL has been developing an active antenna that overcomes the Bode-Fano bandwidth-efficiency limitations on both Transmit (TX) and Receive (RX) in the HF (3-30 MHz) band. The TX mode uses a switch-mode Radio Frequency Current Source (RFCS) amplifier to efficiently drive a 1-m normal mode helix beyond...

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Published in:2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI) pp. 2397 - 2398
Main Authors: White, Carson R., Ramos, Ignacio, Bracy, Gregory, DeBoy, Jonathan K., Song, Hyok J., Austin, Liam, Yang, Louis, Mitchell, Alexandra S., McWhortel, Tyler, Schlomann, Evan A., Garcia, Frank E., Lee, Hanseung, Krieger, James D.
Format: Conference Proceeding
Language:English
Published: IEEE 14-07-2024
Subjects:
Helical antennas
Phase shift keying
Receiving antennas
Resonance
Sensitivity
Switches
Transmitting antennas
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Abstract HRL has been developing an active antenna that overcomes the Bode-Fano bandwidth-efficiency limitations on both Transmit (TX) and Receive (RX) in the HF (3-30 MHz) band. The TX mode uses a switch-mode Radio Frequency Current Source (RFCS) amplifier to efficiently drive a 1-m normal mode helix beyond its natural resonance. The RX mode uses a high impedance buffer, together with the resonant matching network, to enable wideband reception. This paper presents a TX demonstration delivering QPSK to a dummy load with 5-10x more bandwidth-efficiency product than the Bode-Fano limit, and an RX demonstration with > 13 dB higher receive sensitivity than a narrowband conjugate match over most of the HF band.
AbstractList HRL has been developing an active antenna that overcomes the Bode-Fano bandwidth-efficiency limitations on both Transmit (TX) and Receive (RX) in the HF (3-30 MHz) band. The TX mode uses a switch-mode Radio Frequency Current Source (RFCS) amplifier to efficiently drive a 1-m normal mode helix beyond its natural resonance. The RX mode uses a high impedance buffer, together with the resonant matching network, to enable wideband reception. This paper presents a TX demonstration delivering QPSK to a dummy load with 5-10x more bandwidth-efficiency product than the Bode-Fano limit, and an RX demonstration with > 13 dB higher receive sensitivity than a narrowband conjugate match over most of the HF band.
Author Yang, Louis
Mitchell, Alexandra S.
Bracy, Gregory
Lee, Hanseung
Krieger, James D.
Song, Hyok J.
Ramos, Ignacio
White, Carson R.
Schlomann, Evan A.
Austin, Liam
McWhortel, Tyler
Garcia, Frank E.
DeBoy, Jonathan K.
Author_xml – sequence: 1
  givenname: Carson R.
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  surname: Ramos
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  organization: HRL Laboratories, LLC,Malibu,CA,USA
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  organization: HRL Laboratories, LLC,Malibu,CA,USA
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  givenname: Hyok J.
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  organization: HRL Laboratories, LLC,Malibu,CA,USA
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  givenname: Evan A.
  surname: Schlomann
  fullname: Schlomann, Evan A.
  organization: HRL Laboratories, LLC,Malibu,CA,USA
– sequence: 11
  givenname: Frank E.
  surname: Garcia
  fullname: Garcia, Frank E.
  organization: HRL Laboratories, LLC,Malibu,CA,USA
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  givenname: Hanseung
  surname: Lee
  fullname: Lee, Hanseung
  organization: HRL Laboratories, LLC,Malibu,CA,USA
– sequence: 13
  givenname: James D.
  surname: Krieger
  fullname: Krieger, James D.
  organization: HRL Laboratories, LLC,Malibu,CA,USA
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Snippet HRL has been developing an active antenna that overcomes the Bode-Fano bandwidth-efficiency limitations on both Transmit (TX) and Receive (RX) in the HF (3-30...
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StartPage 2397
SubjectTerms Helical antennas
Phase shift keying
Receiving antennas
Resonance
Sensitivity
Switches
Transmitting antennas
Title High-Frequency Active Transmit/Receive Antenna
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