An algorithm implementation for gain control and power compensation in power amplifiers

Jaiswal, Smriti; Singh, Pooja; Srivastava, Srishti; Arora, R.; Bharadhwaj, P. S.

doi:10.1109/icmoce.2015.7489689

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…Another challenge in the design of broadband HPAs is to compensate the output power fluctuations arising from thermal and operating frequency changes across the frequency range of interest . In order to decrease these fluctuations in the broadband HPAs, an agile digital level control (DLC) algorithm has been developed which reduces the output power fluctuations from 25% in saturation power to 2%.…”

Section: Introductionmentioning

confidence: 99%

A 200 W broadband high power amplifier using hybrid power combining network and digital level control

Alekajbaf

Masoumi

Mohammad-Taheri

et al. 2020

Int J RF Microw Comput Aided Eng

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In this article, a 2 to 6 GHz solid‐state power amplifier with 53 dBm output power has been analyzed, designed, and fabricated. To achieve a wideband high output power, we introduce a 16‐way hybrid power combiner based on microstrip planar binary and parallel structures. The simulation and measurement results of the proposed hybrid power combining network (PCN) show that the maximum power combining efficiency is around 86% with the insertion loss of around 0.6 to 1.5 dB and an isolation of 20 dB between the ports. Also, to compensate the output power variations due to the thermal and operating frequency changes across the bandwidth, a digital level control (DLC) unit utilizing an agile control algorithm is proposed which decreases the output power variations to 2% of the desired output power. A cooling heatsink fan system has been also designed in order to transfer the heat generated power to the air. The measured output power for the applied input continuous wave is higher than 52.5 dBm. In addition, the power added efficiency (PAE) is better than 15% across the wide portion of the bandwidth and the measured third‐order intermodulation is about 20 dBc (average).

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Section: Introductionmentioning

confidence: 99%