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for RCP/LCP (+/−) incident light accompanied by reversing the polarization state of the incident beam. In order to obtain high PCE, which is defined as the power ratio of transmitted circular light with opposite helicity to the incident light, each element should act as a half wave plate...
For the unit cell array case, the simulations are performed using the FDTD method by running a script code. The script enables the placement of nanoblocks at each position (x,y) within the designed diameter of the metalens by rotating them according to the P–B phase condition (equation ...
Hierarchically structured phononic crystals are proposed for filtering multiple frequency bands. The advantages of using structural hierarchy come from its multiscale periodicity and the increased number of controllable parameters, which contribute to op
attenuation and penetration of mmW frequencies are discussed in Section 2 of the paper. Effects of CMOS technology scaling that has made implementation of mmW circuits possible with CMOS processes are discussed in Section 3. Section 4 presents a discussion on distributed vs. lumped element design ap...
They reversed the polarity of charge on a piezoelectric element by ringing the charge through an inductor as the element is in stressed state (at maxima and minima of the displacement). It was demonstrated that this approach resulted in increased voltage and power output. All of these approaches...
whereWipindicates the (i, p) element of matrixWwhose rowi,wi, is the signature for drugiandHpjindicates the (p,j) element of matrixHwhose columnj,hj, is the signature for side effectj. The objective function and decomposition algorithm ...
Frequency multipliers include a pair of transistors each connected to a common impedance through a respective collector impedance formed from a transmission line. Each transmission line has a length between about one quarter and about one eighth of a wavelength of an input signal frequency and is tu...
wherein at least one of the internal parameters of the non-linear device within the subcircuit have been adjusted to compensate for the introduction of the external elements; setting the internal parameters of the non-linear device and sub-circuit external element parameters based upon the DC respo...
(also referred to as terahertz radiation). EM energy in the EHF band has a wavelength in the range of approximately 10 mm to 1 mm. Hence, EHF EM radiation is also generally referred to as millimeter wave RF (mm-wave). Accordingly, the terms EHF and mm-wave are used synonymously herein...