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We have demonstrated a high-gain, shallow-cavity, low-frequency, cavity-backed slot antenna (CBSA) by loading its cavity with an active artificial magnetic conductor (AAMC) enabled with non-Foster negative inductors. The AAMC is mounted 1.27 cm below the cavity ceiling. The non-Foster circuit (NFC) allows the AMC resonant frequency to be tuned to as low as 200 MHz with ±90° bandwidth as high as 90%...
We are developing new low-inductance gas switches for Linear Transformer Drivers (LTDs). Linear Transformer drivers are a new pulsed-power architecture that may dramatically reduce the size and cost of future pulsed-power drivers, but which place stringent requirements on gas switches. A typical large LTD may have 10,000 or more gas switches that are DC-charged to 200 kV and that must be triggered...
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