Nonlinear modeling of class-E microwave power amplifiers

Markovi, Milica; Kain, A.Z.; Popovi, Zoya

doi:10.1002/(sici)1099-047x(199903)9:2<93::aid-mmce4>3.0.co;2-0

Cited by 9 publications

(4 citation statements)

References 7 publications

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“…6 shows the voltage at point B, which is the voltage waveform across the switch. For comparison, a harmonic balance simulation at 500 MHz for a different class-E amplifier [14] is shown in Fig. 7.…”

Section: B Class-e Nonlinear Amplifiermentioning

confidence: 99%

Time-domain optical sampling of switched-mode microwave amplifiers and multipliers

Weiss

Crites

Bryerton

et al. 1999

IEEE Trans. Microwave Theory Techn.

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Time-domain measurements of the output waveforms of two 8-GHz high-efficiency power amplifiers, a 1-GHz frequency doubler, and a 5-GHz frequency doubler are presented in this paper. A new photoconductive probe has enabled nonintrusive time-domain voltage measurements, which confirm switched-mode class-E and class-F amplifier operation. In order to analyze nonlinear amplifiers designed to deliver a sinusoidal wave to the load, voltages at characteristic points inside the circuit need to be known. In multipliers, waveform measurements track harmonic leakage, expediting the design cycle. The highimpedance probe used here is an optoelectronic sampler, which can sense the charge on an exposed interconnect or the field associated with a buried interconnect. These electric-field data are then converted into voltage.

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Section: B Class-e Nonlinear Amplifiermentioning

confidence: 99%

Time-domain optical sampling of switched-mode microwave amplifiers and multipliers

Weiss

Crites

Bryerton

et al. 1999

IEEE Trans. Microwave Theory Techn.

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“…The input of the PA is matched starting with a conjugate match using small-signal parameters, followed by post-production tuning. This is necessary because an acceptable nonlinear model for this devices does not currently exist [23]. The circuit is fabricated on a Rogers TMM6 substrate ( , mm, m) (see Fig.…”

Section: Class-e Amplifier Designmentioning

confidence: 99%

An efficient x -band 16-element spatial combiner of switched-mode power amplifiers

Pajic

Popović

2003

IEEE Trans. Microwave Theory Techn.

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This paper describes the design, implementation, and characterization of a high-efficiency 10-GHz amplifier antenna array for spatial power combining. An average drain efficiency of 70% at 162 W effective isotropic radiated power, or about 1.5 W of transmitted power, is measured for an array of 16 amplifiers consisting of four four-element subarrays. The power-combining efficiency of the 16-element array is above 79%. The active device is a low-cost GaAs MESFET with a maximum available power in class A of 21 dBm. The single class-E power amplifier delivers 20.3 dBm with 67% drain efficiency and 58% power-added efficiency.

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“…To meet the needs of modern communications, PAs should have higher efficiency, wider bandwidth, and better linearity. Through the concept of waveform engineering, researchers have proposed switch‐mode PAs, such as class‐E, 1 class‐F, 2 class‐F −1 , 3 and theoretically, their efficiency can reach 100%. Unfortunately, the bandwidth of class‐E and class‐F PAs are very narrow.…”

Section: Introductionmentioning

confidence: 99%

Compact broadband high‐efficiency power amplifier using terminated coupled line filter matching network

Jian

Cheng

et al. 2021

Int J RF Microw Comput Aided Eng

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This article presents a compact broadband high‐efficiency power amplifier (PA) with a filtering structure. Unlike the cascaded filter behind the traditional PA, the proposed cascaded branch load coupling microstrip line structure is used to design the output matching network (OMN) of the PA. It plays the roles of impedance matching and filtering, which is called a filtering OMN, the overall size of the circuit will be reduced. Two coupled microstrip lines cascaded are used to extend the working bandwidth, and a microstrip line is loaded to the port of the coupled microstrip lines to ensure high selectivity and good out‐of‐band performance. For verification, a broadband high‐efficiency PA is designed and manufactured by using CGH40010F GaN HEMT. Measurements demonstrate that in the range from 1.2 to 3.6 GHz, the saturated output power is from 39.8 to 41.8 dBm, the drain efficiency (DE) with a 62%–73%, and the gain is between 9.9 and 11.7 dB.

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Nonlinear modeling of class-E microwave power amplifiers

Cited by 9 publications

References 7 publications

Time-domain optical sampling of switched-mode microwave amplifiers and multipliers

Time-domain optical sampling of switched-mode microwave amplifiers and multipliers

An efficient x -band 16-element spatial combiner of switched-mode power amplifiers

Compact broadband high‐efficiency power amplifier using terminated coupled line filter matching network

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