The only way to make a long barrel as accurate as a short barrel is to make it equally stable, either by making it fatter (and heavier) or by installing some type of harmonic tuning
device such as the Browning A-Bolt BOSS system.
Power amplifier designed by following second harmonic tuning
(2HT) approach (i.
Active load-pull has the capability to overcome this problem and provide harmonic tuning
at the same time.
NEC said that it produced the latest amplifiers by adopting high performance, reliable RF transistor technologies, in addition to optimising Doherty RF circuitry with harmonic tuning
NEC produced these latest amplifiers by adopting high performance and highly reliable RF transistor technologies(*2), in addition to independently optimizing Doherty RF circuitry(*3) with harmonic tuning
The only way to make a long barrel as accurate as a short barrel is to make it equally stable--either by making it fatter (and heavier), or by installing some type of harmonic tuning
device, like Browning's superbly engineered BOSS system.
Several novel high efficiency PA designs have been proposed by using AIAs to perform harmonic tuning
The new amplifier's record PAE of 67% PAE, more than seven points higher than conventional amplifiers, is enabled by the world's first harmonic tuning
circuit placed in front of each GaN HEMT cell on the substrate.
These are obtained using the optimum load impedance condition for the fundamental frequency coupled with output harmonic tuning
at the second and third harmonics.
The mixer features Auto Harmonic Tuning
that detects the key of song and automatically corrects it to the closest true key.
Using wideband, high VSWR, prematching tuners instead of harmonic tuners improves the situation, but creates limitations in harmonic tuning
Typical measurements at 2 GHz show the influence of harmonic tuning
on the operation of a 1 W power GaAs heterojunction bipolar transistor (HBT).