This article presents the design strategy and implementation of a three-way Doherty power amplifier (DPA3W) to enhance efficiency at deep back-off. Theoretical equations are derived, based on which charts drawn explore available space, accounting for practical constraints related technology selected application. The proposed is demonstrated by design, fabrication experimental characterization m...

While an ideal Doherty power amplifier has a linear response, the load modulated balanced (LMBA) compressive response under conditions. This inherent nonlinear characteristic is due to lower contribution of single auxiliary device as transistors approach compression. article presents LMBA with two-stage control signal in place device. The idea preserve high and constant gain across high- low-po...

In this paper, a novel accurate model dimensions estimation algorithm suitable for memory polynomial based behavioral models is proposed. For a predefined model performance criterion, the proposed algorithm selects the nonlinearity order and the memory depth for a trade-off between performance and computational complexity. Indeed, the nonlinearity order is first chosen to minimize the condition...

Die Leitideen der Diagnose und individuellen Förderung sind in den vergangenen Jahren nicht nur in den Blickpunkt der bildungswissenschaftlichen und fachdidaktischen Forschung gerückt, sondern haben bereits Eingang in einige lehrerbildende Studiengänge genommen. Ein Beispiel hierfür stellt das Projekt dortMINT dar, das im Rahmen der Exzellenzinitiative ” MINT-Lehrerbildung“ von der Deutsche Tel...

We present a stronger version of the Doherty-Parrilo-Spedalieri (DPS) hierarchy of approximations for the set of separable states. Unlike DPS, our hierarchy converges exactly at a finite number of rounds for any fixed input dimension. This yields an algorithm for separability testing which is singly exponential in dimension and polylogarithmic in accuracy. Our analysis makes use of tools from a...

In this paper, analysis, simulation and design of a distributed amplifier (DA) with 0.13µm CMOS technology in the frequency range of 3-40 GHz is presented. Gain cell is a current reused circuit which is optimum in gain, noise figure, bandwidth and also power dissipation. To improve the noise performance in the frequency range of interest, a T-matching low pass filter LC network which is utilize...

This paper presents a multi-mode asymmetric power amplifier (MMA-PA) with back-off efficiency enhanced. The is improved without lossy impedance inverter or signal separator which used in conventional Doherty outphasing amplifiers. design considerations are provided detail. In addition, the proposed MMA-PA operates three different modes according to input level. PA fabricated 65-nm bulk CMOS tec...