We demonstrate in this work effective linearization on a millimeter-wave (mm-Wave) broadband monolithic gallium nitride (GaN) power amplifier (PA) using digital predistortion (DPD). The PA used is two-stage common-source (CS)/2-stack that operates the mm-Wave 5G FR2 band, and it linearized with generalized memory polynomial (GMP) DPD tested 4G (4th generation) long-term-evolution (LTE) 64-QAM (...

This paper describes the design and implementation of a current-mode phase-locked loop (PLL) using static and dynamic (log-domain) translinear circuits. The loop is fully tuneable, with independent control of center frequency and loop bandwidth. The loop employs a recently proposed current-mode “log-domain” oscillator in a classical PLL topology to obtain these features. The PLL has been fabric...

The knowledge of dielectric properties may hold a potential to develop a new technique for quality evaluation of milk. The dielectric properties of water-diluted cow’s milk with milk concentrations from 70% to 100% stored during 36 h storage at 22 C and 144 h at 5 C were measured at room temperature for frequencies ranging from 10 to 4500 MHz using open-ended coaxial-line probe technology, alon...

INTRODUCTION While most of us have a general idea of distortion and know that it deteriorates the signal, it may be useful to re-state what is distortion. When a signal is processed through an electronic circuit, the output of the circuit often contains unwanted signals which were not part of the input. These unwanted output signal's frequency is usually related to the input signal's frequency....

The Galactic synchrotron emission is expected to be the most relevant source of astrophysical contamination in cosmic microwave background polarization measurements, at least at frequencies ν < ∼ 100 GHz and at angular scales θ > ∼ 30′ . We present a multifrequency analysis of the Leiden surveys, linear polarization surveys covering essentially the Northern Celestial Hemisphere at five frequenc...