2004
DOI: 10.1002/mmce.20038
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Nonlinear approaches to the design of microwave power amplifiers

Abstract: Commonly used approaches for the design of power amplifiers (PAs), specifically\ud in the microwave and millimeter-wave frequency range, are reviewed and discussed.\ud Measurement-based techniques are compared with CAD-based approaches, stressing their\ud relative strengths and weaknesses. Simplified techniques are also discussed, particularly\ud addressing the preliminary evaluation of the power capabilities of a given device and to gather\ud physical insight into the power-generating mechanisms. Finally, har… Show more

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Cited by 17 publications
(21 citation statements)
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“…The centre frequency for the PA is f o =5.5GHz, while a Class AB bias condition, resulting in a 20% of maximum achievable output current, was selected in order to prevent wrong harmonic current phase generation [3]. Preliminary the optimum input and output optimum load terminations (up to third harmonic frequencies, i.e.…”
Section: Pa Designmentioning
confidence: 99%
See 1 more Smart Citation
“…The centre frequency for the PA is f o =5.5GHz, while a Class AB bias condition, resulting in a 20% of maximum achievable output current, was selected in order to prevent wrong harmonic current phase generation [3]. Preliminary the optimum input and output optimum load terminations (up to third harmonic frequencies, i.e.…”
Section: Pa Designmentioning
confidence: 99%
“…Class A) [2]. In fact, the aim of the harmonic manipulation is to find the optimum device harmonic terminations (usually up to third harmonic component), both at the input and output ports, to improve the fundamental output voltage component according to device physical limitations, thus increasing output power and therefore power gain and efficiency [3].…”
Section: Introductionmentioning
confidence: 99%
“…The proposed technique, based on closed-form and recursive relationships, allows a direct computer-aided design (CAD) synthesis for a theoretically unlimited number of uncorrelated frequencies. The proposed approach has been validated by designing a high-efficiency dual-band PA based on a GaN device, exploiting harmonic tuning strategy [17], [19]. The resulting PA is a concurrent amplifier able to simultaneously operates at 2.45 and 3.3 GHz with a measured 53% and 46% drain efficiency in the two targeted bands, while providing, respectively, 33-and 32.5-dBm output power [24].…”
Section: Introductionmentioning
confidence: 98%
“…For instance, in [16], the proposed dual-band PA was designed controlling only the fundamental carrier frequencies through low-pass Chebyshev filters. In this case, the device nonlinear behavior and the relevant harmonic terminations were neglected, even though they should be properly taken into account to further increase the device performance [17]- [19]. Of course, if also the harmonic terminations have to be accounted for, the number of frequencies to be controlled becomes significant and the corresponding matching networks are not easy to realize.…”
Section: Introductionmentioning
confidence: 99%
“…For instance, harmonic tuning approaches have been demonstrated to be crucial to achieve high conversion (drain or power added) efficiency levels [1] or to reduce intermodulation distortions in power amplifiers (PAs) [2,3]. Usually, after the identification of the appropriate harmonic terminations, the synthesis of passive (harmonic) matching networks is performed by using a CAD optimization tools, with the aim to find a satisfactory compromise between the network complexity and its frequency behaviour.…”
Section: Introductionmentioning
confidence: 99%