High Efficiency X-band MMIC Power Amplifier for Remote Sensing Satellites
Razieh Narimani
1
(
Satellite Research Institute, Iranian Space Research Center, Tehran, Iran
)
Vali Talebzadeh
2
(
Satellite Research Institute, Iranian Space Research Center, Tehran, Iran
)
Ahad Farhadi
3
(
Satellite Research Institute, Iranian Space Research Center, Tehran, Iran
)
Keywords: Power Amplifier, Satellite Transmitter, GaN HEMT Technology, Integrated Circuits,
Abstract :
The advancements in space telecommunication industry and the need to design transmitters with high transmission bit rate on the one hand and the limitation of the power consumption of satellite modules on the other hand, have made the importance of power amplifiers, as one of the main components of the transmitters with the highest power consumption, being highly efficient even more then before. Is. In this paper, we investigate a method to increase the efficiency and linearity of a two-stage class AB power amplifier using a 500nm GAN HEMT for the transmitter of a sensing satellite to send images obtained in the X frequency band. The designed amplifier has a saturation power of 49.84dBm, a gain of 23.9dB and an efficiency of 37% in the frequency range of 10.7-11.2GHz with a drain voltage of 40V, which has a higher output power and gain compared to other similar amplifiers in this band. The linearity characteristics of this amplifier are 12dB AM/AM, 4dB/dB AM/PM and 23dBc IM3 at the center frequency of 10.95GHz and it has a bandwidth of 36MHz.
High efficiency X-band MMIC power amplifier for remote sensing satellites
Using ALGaN/GaN Technology
The linearity characteristics of this amplifier are 1dB AM/AM, 4dB/dB AM/PM and 23dBc IM3 at the center frequency of 10.95GHz
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