WIZ blocking peptide

We demonstrate a new bias techniqne that uses low-pass and high-pass filters to separate the current paths of the sampling and signal frequencies in a Josephson waveform synthesizer. This technique enables the output voltage of the array to be directly grounded by removing the low-frequency common mode signal that previously prevented direct measurement of the array voltage with low-impedance instruments. We directly measure the harmonic spectra of 1 kHz and 50 kHz synthesized sine waves. We also nse a thermal transfer standard to compare the rms voltages of synthesized sine waves at frequencies from 1 Wiz to 50 kHz Finally, we describe a new circuit that should enable a significant increase in output voltage by allowing several distributed arrays to be biased in parallel at high frequency, while combining their low frequency output voltages in series.

A high gain W-band air-filled Il-plane horn antenna is designed and fabricated using low-cost PCB technology. The antenna consists of 4 substrate layers. A portion of the dielectric substrate is removed from the middle two layers to form a hollow horn. A rectangular-slotted dielectric load is added at the end of the antenna providing 4 dB gain enhancement, as well as better impedance matching. Measured results show that the impedance bandwidth is wider than 18 GHz(85-103 Wiz) and a peak gain of 15.5 dBi at 97.5 Gllz is achieved.