A Highly Efficient Power Amplifier at 5.8 GHz Using Independent Harmonic Control

Park, Yunsik; Minn, Donggyu; Kim, Seokhyeon; Moon, Junghwan; Kim, Bumman

doi:10.1109/lmwc.2016.2630853

Cited by 18 publications

(6 citation statements)

References 8 publications

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“…Furthermore, to aid matching the second harmonic output termination, a stub is used at the drain bias network, after the section filtering out the fundamental signal. The upper-band PA uses the technique in [14] to match fundamental and second harmonic impedances, independently. This method includes two λ 4 transmission lines for the second harmonic at the transistor's RF drain terminal, to avoid affecting the fundamental match, and an extra capacitor, whose selfresonant frequency is the second harmonic frequency, is included at the drain bias network, after the second harmonic matching.…”

Section: B Single-band Pa Designmentioning

confidence: 99%

Dual-Band Class J Power Amplifier at 2.45 and 5.8 GHz for UAVs Communications

et al. 2022

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A hybrid dual-band power amplifier (PA) prototype working at two Industrial, Scientific and Medical (ISM) bands, 2.4-2.5 GHz and 5.725-5.875 GHz, was designed for Unmanned Aerial Vehicles (UAVs) communication applications in Spain. Initially, two single-band PA prototypes centered at each band were designed to evaluate the single-band achievable RF performance. In all the PAs, the Gallium Nitride (GaN) Qorvo HEMT TGF2977-SM was used, as well as microstrip transmission lines technology. To achieve wideband, good linearity and efficiency, the PAs were designed in class J. The measured results for the dual-band PA prototype at the 2dB compression point at the lower and higher bands, respectively, are 14.8 dB and 11.2 dB of Transducer Power Gain (G T ), 35.7 dBm and 34.8 dBm of RF output power (Pout) and 59.2% and 43.5% of Drain Efficiency (η). At 3dB compression the respective lower and higher bands results are 37.9 dBm and 37 dBm of Pout and 73.9% and 55% of η.

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Section: B Single-band Pa Designmentioning

confidence: 99%

Dual-Band Class J Power Amplifier at 2.45 and 5.8 GHz for UAVs Communications

et al. 2022

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“…[1][2][3][4][5][6][7][8] Considering the reliability of the harmonic terminations and the influence of harmonic components, the second harmonic manipulation is more practical over other high order harmonic manipulation. [9][10][11][12][13] Second harmonic tuned (2HT) PAs with harmonic tuning matching network have been widely investigated. Microstrip radial stub, 9 shunt stubs-assembled topology, 10 multi-stage Chebyshev filter 14 are used to achieve matching and second harmonic control.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12][13] Second harmonic tuned (2HT) PAs with harmonic tuning matching network have been widely investigated. Microstrip radial stub, 9 shunt stubs-assembled topology, 10 multi-stage Chebyshev filter 14 are used to achieve matching and second harmonic control. However, these studies the above studies controlled only the fundamental and second harmonics did not strictly satisfy the short-circuit condition of the ideal 2HT PA for the third harmonic.…”

Section: Introductionmentioning

confidence: 99%

High efficiency GaN power amplifier with compact harmonic tuning network

Cai,

Gao,

Xue

et al. 2024

Micro & Optical Tech Letters

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One high efficiency second harmonic tuned (2HT) power amplifier (PA) with a compact multi‐harmonic tuning network is presented. The proposed design method can drive the third harmonic impedance to short‐circuit condition to achieve an ideal 2HT PA operation. Then the second harmonic impedance is controlled to proper position to improve the PA efficiency. Meanwhile, the fundamental impedance is also transferred to 50 Ω load by making the most of this tuning network. Consequently, the proposed output network can be designed to a compact size and is suitable for high frequency PA applications. For demonstration, a PA using Cree CGH40010 GaN high‐electron‐mobility transistor is designed and fabricated at 3.5 GHz. The measured results show that the PA achieves peak power added efficiency of 72.8%, output power of 41.3 dBm and drain efficiency of 80.2% at 3.3 GHz.

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“…Class-F power amplifiers, which have short circuits for the even-order harmonics and open circuits for the odd-order harmonics, have been a good option to obtain high efficiency [ 16 ]. An independent second-harmonic control circuit using quarter-wave transmission lines was proposed for a harmonic tuned power amplifier [ 17 ]. Since the independent second-harmonic tuning circuit does not affect the impedance matching circuit for the fundamental while tuning the second harmonic, it makes it much easier to tune the overall circuits for the second harmonic and the fundamental, and to produce optimal performances.…”

Section: Introductionmentioning

confidence: 99%

2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit

Shin

et al. 2021

Sensors

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This paper proposes a class-F synchronous rectifier using an independent second harmonic tuning circuit for the power receiver of 2.4 GHz wireless power transmission systems. The synchronous rectifier can be designed by inverting the RF output port to the RF input port of the pre-designed class-F power amplifier based on time reversal duality. The design of the class-F power amplifier deploys an independent second harmonic tuning circuit in the matching networks to individually optimize the impedances of the fundamental and the second harmonic. The synchronous rectifier at the 2.4 GHz frequency is designed and implemented using a 6 W gallium nitride high electron mobility transistor (GaN HEMT). Peak RF-dc conversion efficiency of the rectifier of 69.6% is achieved with a dc output power of about 7.8 W, while the peak drain efficiency of the class-F power amplifier is 72.8%.

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A Highly Efficient Power Amplifier at 5.8 GHz Using Independent Harmonic Control

Cited by 18 publications

References 8 publications

Dual-Band Class J Power Amplifier at 2.45 and 5.8 GHz for UAVs Communications

Dual-Band Class J Power Amplifier at 2.45 and 5.8 GHz for UAVs Communications

High efficiency GaN power amplifier with compact harmonic tuning network

2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit

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