Radio Frequency (RF) amplifiers with voltage limiting using non-linear feedback are presented herein. According to one aspect, an RF amplifier comprises an amplifier circuit having an input terminal and an output terminal and a non-linear feedback circuit having an input terminal and an output ...
Generally, the invention relates to a method and apparatus to improve the performance of radio frequency power amplifiers. More particularly, the present invention discloses the use of a power booster in conjunction with a radio-frequency linear power amplifier to reduce intermodulation distortion of ...
Radio Frequency (RF) amplifiers with voltage limiting using non-linear feedback are presented herein. According to one aspect, an RF amplifier comprises an amplifier circuit having an input terminal and an output terminal and a non-linear feedback circuit having an input terminal and an output ...
System science Highly Linear and Efficient Radio Frequency Power Amplifiers with a New Circuit Synthesis Technique NORTH CAROLINA STATE UNIVERSITY Kevin GardMichael Steer DingMiaofuPower amplifiers and other large-signal circuits are known to suffer from inherent transistor nonlinearities in linearity and ...
As a result, present-day linear amplifiers, especially cellular radio frequency (RF) power amplifiers (PAs), are manufactured with linear but expensive technologies such as GaAs rather than nonlinear but low-cost technologies such as CMOS.;To realize true linearity independent of the transistor ...
Radio frequency signal processing and amplification in cartesian loop and other linear amplifiersA Cartesian Loop radio frequency transmitter has its I and Q channel processing circuitry implemented in an ASIC, which produces a forward path output signal in a first radio frequency band. At least one...
has introduced a line of GaAs MMIC power amplifiers covering the 13 GHz to 40 GHz frequency bands. The amplifiers are intended for wireless communications applications, such as commercial digital radios, wireless LANs and VSAT applications.Engineering samples are available, along with small production ...
full-duplex communications; self-interference; I/Q imbalance; image rejection ratio; software-defined radio; widely-linear adaptive filter1. Introduction Full-duplex (FD) operation mode represents a new paradigm in the radio communication field, which promises a significant increase in spectral ...
For decades, dielectric resonators (DRs) have been widely utilized as tuners or amplifiers in microwave-circuit applications [1] due to their high Q-factors. The utilization of antennas had to wait for a long time, until Long et al. presented the first cylindrical dielectric resonator antenna ...
Linear Power Amplifiers for Point-to-Point Radio ApplicationsBy Sushil KumarKent StoryRon KielmeyerTariq Lodhi