TY - JOUR
T1 - Differentially fed high-power microwave antennas using capacitively coupled hyperband inverters
AU - Scott Tyo, J.
AU - Abdalla, Michael D.
AU - Skipper, Michael C.
N1 - Funding Information:
Manuscript received January 6, 2019; revised March 30, 2019; accepted April 9, 2019. Date of publication May 23, 2019; date of current version August 12, 2019. This work was supported by the US Army under SBIR aware W9113M-17-C-0028. (Corresponding author: J. Scott Tyo.) J. S. Tyo is with the School of Engineering and IT, UNSW Canberra, Canberra, ACT 2612, Australia (e-mail: tyo@ieee.org). M. D. Abdalla and M. C. Skipper are with ASR Corporation, Albuquerque, NM 87131 USA. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TAP.2019.2917473
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - For high-power electromagnetic (HPEM) applications at high-repetition rate, conventional microwave inverters based on pulse transformers are not practical. At high-repetition rates, the magnetic materials used in the inductive coupling saturate. In this paper, we present an alternate concept for an inverter based on the technology used for ultrawideband baluns which provides isolation through capacitive coupling. Design of the device is discussed through numerical modeling, and two implementations are built and demonstrated: a circuit element version and a transmission line version. The devices are demonstrated at charge voltages of 6 kV and repetition rates up to 100 Hz, with excellent performance between 20 MHz and 2.5 GHz. The circuit element device has a rise time of 445 ps with an insertion loss of less than 3 dB, while the transmission line device has a rise time of 240 ps with an insertion loss of less than 2 dB for most frequencies. The inverter is demonstrated as part of the feed network for a hyperband HPEM antenna with a differential input.
AB - For high-power electromagnetic (HPEM) applications at high-repetition rate, conventional microwave inverters based on pulse transformers are not practical. At high-repetition rates, the magnetic materials used in the inductive coupling saturate. In this paper, we present an alternate concept for an inverter based on the technology used for ultrawideband baluns which provides isolation through capacitive coupling. Design of the device is discussed through numerical modeling, and two implementations are built and demonstrated: a circuit element version and a transmission line version. The devices are demonstrated at charge voltages of 6 kV and repetition rates up to 100 Hz, with excellent performance between 20 MHz and 2.5 GHz. The circuit element device has a rise time of 445 ps with an insertion loss of less than 3 dB, while the transmission line device has a rise time of 240 ps with an insertion loss of less than 2 dB for most frequencies. The inverter is demonstrated as part of the feed network for a hyperband HPEM antenna with a differential input.
KW - Electromagnetic transients
KW - ultrawideband antennas
KW - ultrawideband technology
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U2 - 10.1109/TAP.2019.2917473
DO - 10.1109/TAP.2019.2917473
M3 - Article
AN - SCOPUS:85070603245
VL - 67
SP - 5203
EP - 5211
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 8
M1 - 8721237
ER -