High-Frequency Active Transmit/Receive Antenna

被引：0
|
作者：
White, Carson R. [1 ]
Ramos, Ignacio [1 ]
Bracy, Gregory [1 ]
Deboy, Jonathan K. [1 ]
机构：
[1] HRL Labs LLC, Malibu, CA 90265 USA
来源：
2024 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND INC/USNCURSI RADIO SCIENCE MEETING, AP-S/INC-USNC-URSI 2024 | 2024年
关键词：
D O I：
10.1109/AP-S/INC-USNC-URSI52054.2024.10686762
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：2397 / 2398
页数：2
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