Journal ArticleDOI
Effects of reconstruction filters and sampling rate for a digital signal component separator on LINC transmitter performance
TLDR
In this article, the authors investigate how reconstruction filters and sampling rate for a digital signal component separator affect the performance of an LINC transmitter and find a nearly optimal cutoff frequency for a given filter approximation and the minimum sampling rate.Abstract:
The authors investigate how reconstruction filters and sampling rate for a digital signal component separator affect the performance of an LINC transmitter. A method is described that, for a specified adjacent channel interference level, finds a nearly optimal cutoff frequency for a given filter approximation and the minimum sampling rate.read more
Citations
More filters
Journal ArticleDOI
Gain/phase imbalance-minimization techniques for LINC transmitters
TL;DR: Two simple calibration schemes for the correction of the path imbalance in a linear amplification with nonlinear components (LINC) transmitter have been demonstrated.
Journal ArticleDOI
The Linearity-Efficiency Compromise
TL;DR: In this paper, the authors proposed to improve the average efficiency and linearize the workhorse of RF power amplification, the class-B (or class AB) PA, relying on predistortion, dynamic load modulation or ET.
Patent
Systems and Methods of RF Power Transmission, Modulation, and Amplification
TL;DR: In this article, an apparatus, system, and method for energy conversion is described, which can include a trans-impedance node, a reactive element, and a trans impedance circuit.
References
More filters
Journal ArticleDOI
Automatic adjustment of gain and phase imbalances in LINC transmitters
TL;DR: A direct-search scheme is used to adjust gain and phase in one amplifier branch, guided by the measured output signal in adjacent channels, and the functionality of the method has been verified by means of simulation.
The linc transmitter
Casadevall Palacio,Fernando José +1 more
TL;DR: In this article, a technique for linear amplification of a bandpass signal using both nonlinear components and digital signal processing is presented, where the bandpass signals are decomposed into two constant-amplitude phase modulated signals, which can be nonlinearily amplified and recombined to produce a linearly amplified signal.
Journal ArticleDOI
Effects of reconstruction filters in digital predistortion linearizers for RF power amplifiers
TL;DR: In this paper, a method to choose an appropriate sampling rate for the predistorter is presented and different filter approximations and orders are examined for different amplifier configurations by means of simulation.