4 papers
Spatial Wave Control Using a Self-biased Nonlinear Metasurface at Microwave Frequencies
Mehdi Kiani, Ali Momeni, Majid Tayarani +1
Recently, the investigation of metasurface has been extended to wave control through exploiting nonlinearity. Among all of the ways to achieve tunable metasurfaces with multiplexed…
Time-modulated Measurements: Material Characterization Based on Scalar Reflection Data
Sepideh Ghasemi, Hamid Rajabalipanah, Majid Tayarani +2
This paper explores the time-modulated waveguide setups for unique and accurate permittivity and permeability extraction of lossy dispersive samples with phase-less measurements. W…
A Wideband Quasi-Asymmetric Doherty Power Amplifier with a Two-Section Matching-Phase Difference Compensator Network Design Using GaAs Technology
Seyedehmarzieh Rouhani, Ahmad Ghanaatian, Adib Abrishamifar +1
In this paper, a quasi-asymmetric Doherty power amplifier (PA) is designed without load modulation using the GaAs 0.25μm pHEMT technology to reach an enlarged output power back-off…
Self-biased Tri-state Power-Multiplexed Digital Metasurface Operating at Microwave Frequencies
Mehdi Kiani, Majid Tayarani, Ali Momeni +2
Exploiting of nonlinearity has opened doors into undiscovered areas for achieving multiplexed performances in recent years. Although efforts have been made to obtain diverse nonlin…