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We report on a sub-THz source based on Schottky diodes integrated with compound planar antenna structures whose function is to radiate a frequency multiplied tone from a received fundamental, devices which we term multennas. The multennas studied are optimized to frequency multiply from 0.1 to 0.3 THz. A high-power clinotron oscillator provides the circa 0.1 THz c.w. radiation input: this is focused...
A passive filter often becomes a key component in radio frequency (RF) receivers. Analytical component modeling of passive filter suitable for RF front-end applications is dealt with. This analytical analysis has been used to calibrate the optimal values of passive components in order to obtain the maximum image rejection. In this paper, the formula of calculating the gradient vector and the Hessian...
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