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New satellite VHF airband communication services are designed to provide aircraft communication with air traffic control (ATC) in remote and oceanic areas, leveraging existing airborne equipment and i...
This paper presents the design of a low-power (200mW) highly-efficient VHF Class-E amplifier that can be directly integrated with a small (0.38λ) dipole CubeSat satellite antenna. This design is enabl...
In the search for enhanced data transmission capabilities, the evolution of wireless communication networks is rapidly advancing towards the sixth generation, with a particular focus on the sub-terahe...
In this paper, we demonstrate the viability of photoconductive solid-state plasma for phase shifter applications in sub-THz regions. This two-state silicon micromachined waveguide phase shifter exhibi...
Tu4D-3: A Compact 8.2mW Complementary Current-Reusing D-Band Frequency Quadrupler in 22nm FDSOI CMOS
This paper presents a complementary current-reusing (CCR) quadrupler in the D-band frequency range realized in a 22nm FDSOI CMOS technology operating at 144–169 GHz. The circuit is based on the CCR pu...
This paper presents a comparison of two low-power wideband frequency doublers operating above 220 GHz fabricated in a 22 nm FDSOI CMOS technology: chip 1 is a driverless frequency doubler; chip 2 inte...
This talk starts with a high-level view of digital predistortion (DPD) for Class AB power amplifiers. Then presents a methodology to quantify the PA power savings, using a smaller active device or a l...
The extensive use of time-division duplexing in 5G and 6G poses a challenge to the linear operation of the power amplifiers (PAs) in radio base stations. Particularly with Gallium Nitride (GaN) techno...
In this paper, we present a novel methodology to improve the performance of digital predistortion (DPD) in mobile dual-polarized (DP) arrays by employing a reference phase (RP) adjustment technique. T...
In this paper, we propose a new 2-dimensional (2-D) lookup table (LUT)-based scheme with spline interpolation for the modeling of wideband and heavily nonlinear power amplifiers (PAs). The spline-inte...