High-power sources of ultra-wideband radiation with subnanosecond pulse lengths

Generation and radiation of ultra-wideband electromagnetic pulses with high stability and effective potential

“…Previous researches (Gubanov et al, 2005;Efremov et al, 2011) have shown the validity of using this relation for estimation of the far-field zone boundary at excitation of the antenna arrays with bipolar pulses. For this purpose, we will use the relation for the harmonic signals r = 2D 2 /λ 0 , where λ 0 = τ p c, τ p is the length of a bipolar voltage pulse at the input of the feeder system, c is the velocity of light, D is the maximum transverse dimension of the antenna array.…”

A 10 GW Tesla-Driven Blumlein Pulsed Power Generator

“…Repetitive operation has been demonstrated at lower voltage and power levels. Future plans include improving the B-PFL HV switch operation and replacing the static, 30 Ω load resistor, with a bipolar pulse conditioning unit using techniques similar to those presented in [18][19][20]. Implementation of this unit, which includes a pair of very fast acting high-pressure closing switches, will reduce the rise time of the output voltage impulse to hundreds of picoseconds.…”

Ultrawideband dipole receiving antenna for measuring short pulses with extended bandwidth

“…When the transmitting antenna was excited by a monopolar voltage pulse (MP) of duration τ p = 3 ns at a 10% amplitude level, antenna KA 1 was used. Antennas KA 2, KA 3, and KA 4 were used when the excitation was performed, respectively, by a bipolar pulse (BP) with τ p = 2 ns, MP with τ p = 1 ns, and BP with τ p = 0.5 ns. To record the waveforms of the UWB pulses, an unbalanced TEM‐antenna with the ground plate having dimensions 1200 × 500 mm was used as a reference gage.…”