Highly efficient harmonically tuned broadband GaN power amplifier
A Al Tanany, D Grüner, A Sayed… - The 5th European …, 2010 - ieeexplore.ieee.org
A Al Tanany, D Grüner, A Sayed, G Boeck
The 5th European Microwave Integrated Circuits Conference, 2010•ieeexplore.ieee.orgThe influence of the harmonic impedances on the power amplifier performance is presented
across a wide bandwidth. Based on this method, a set of impedances for the first, second
and third harmonics across the band was found which do not affect output power (P Out) and
power added efficiency (PAE). At the 3 dB compression point, the measured P out is 40
dBm±1.5 dB, and the PAE is between 58.7%-78.0% across a bandwidth of 1.5 GHz-2.75
GHz (60% bandwidth). A linearity measurement was done by sweeping the drain supply …
across a wide bandwidth. Based on this method, a set of impedances for the first, second
and third harmonics across the band was found which do not affect output power (P Out) and
power added efficiency (PAE). At the 3 dB compression point, the measured P out is 40
dBm±1.5 dB, and the PAE is between 58.7%-78.0% across a bandwidth of 1.5 GHz-2.75
GHz (60% bandwidth). A linearity measurement was done by sweeping the drain supply …
The influence of the harmonic impedances on the power amplifier performance is presented across a wide bandwidth. Based on this method, a set of impedances for the first, second and third harmonics across the band was found which do not affect output power (P Out ) and power added efficiency (PAE). At the 3 dB compression point, the measured P out is 40 dBm ± 1.5 dB, and the PAE is between 58.7 %-78.0 % across a bandwidth of 1.5 GHz-2.75 GHz (60 % bandwidth). A linearity measurement was done by sweeping the drain supply voltage, gate bias voltage and injecting a WCDMA drive signal to find the best linearity without affecting the performance. A linearity of -36 dBc at 8.5 dB back-off power from the 3 dB compression point of P out was found at 2.15 GHz.
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