Design of Compact Class-F High-Efficiency Shunt-Diode Rectifier With Extended Harmonic Termination for Wireless Power Transfer

Nguyen, Dang‐An; Nam, Hyungseok; Seo, Chulhun

doi:10.1109/lmwc.2022.3202760

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…With addition of a DB-BSN, Z in becomes uncontrollable, and then Z 3 can be negative leading failure of the DB-FMN realization. However, there are free parameters in the proposed DB-BSN such as Z 1 and Z 2 as described by (6), which can be used to tune until Z in can yield proper value of Z 3 . Also, based on (4) with θ 1 = θ 2 , admittance variation of Y H around the fundamental frequencies (f a and f b ) can be characterized by derivative of |Y H | as follows:…”

Section: B Db-fmn Designmentioning

confidence: 99%

“…There are three main losses in the rectifier circuit: diode loss, mismatch loss, and insertion loss from implemented elements [3]. For a well-matched rectifier implemented on the low-loss printed circuit board (PCB), the diode loss can be minimized by harmonic-controlled techniques, namely class C [4], [5], class F [6], [7], inverse class F (class F −1 ) [8], [9], class R [10], [11] or power recycling [12], [13] techniques. The main principle of these methodologies is suppressing the second harmonic component of the diode voltage or current with zero or infinite impedance seen at the diode sides, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a band-stop network at the second harmonic is mounted at the anode of the diode which can yield open-circuit termination with infinite impedance seen at the diode anode for an efficient power recycling mechanism [12], [13]. In [6], [7], the suppression is extended beyond the second order and a class-F operation is formulated.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Band Rectifier Design With High Efficiency Using Simple Dual Band-Stop Network for Wireless Power Transfer

Nguyen,

Choi,

Seo

2024

IEEE Access

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This paper presents a novel structure for designing a dual-band (DB) rectifier with high efficiency and compact size for wireless power transfer. The proposed circuit employs a simple dual bandstop network cascaded by only two transmission lines (TLINs) which can yield open-circuit termination simultaneously for the second harmonics of both two separate frequency bands, enabling an efficient DB power recycling mechanism with minimum insertion loss for power conversion efficiency (PCE) enhancement. The closed-form formulas are derived to extract the TLIN parameters with a low complexity. A rectifier based on a Schottky diode model BAT15-03W is simulated and measured for verification at two target operating frequencies of 0.915 GHz and 2.45 GHz. The measured results show peak PCE of 79.2% and 77.8% observed at 0.9 GHz and 2.36 GHz, respectively. Moreover, wide dynamic range for PCE> 50% is equally recorded at both two frequencies with 17.5 dB. Also, the proposed rectifier exhibits a small electrical size of 0.102λ × 0.105λ, indicating advantages in terms of high PCE and compactness, as compared to the other similar designs.INDEX TERMS Wireless power transfer, DB rectifiers, power recycling, harmonic suppression, band-stop networks, DB impedance matching.

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Section: B Db-fmn Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual-Band Rectifier Design With High Efficiency Using Simple Dual Band-Stop Network for Wireless Power Transfer

Nguyen,

Choi,

Seo

2024

IEEE Access

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“…Therefore, However, there is one free variable in Eq. (7). Selecting the free variable as 𝑛 , the unknown values 𝑋 11 , 𝑋 12 , 𝑋 22 can be derived as…”

Section: Analysis and Design Of Two-port Rcmnmentioning

confidence: 99%

“…This will make the input impedance of the recti-fier fluctuates with the input power level and lead to input impedance mismatch. Thus, it is very challenging to design a high-efficiency rectifier with WIPR [6,7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

A compact rectifier with wide dynamic range of input power based on two-port impedance compression matching network for RF energy harvesting

Liu,

Chen,

et al. 2024

IEICE Electron. Express

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In this paper, we propose a novel methodology for designing a rectifier with wide input power range (WIPR). In the proposed structure, a two-port resistance compression matching network (RCMN) is employed to extend the dynamic range of the input power. Generally, resistance compression network (RCN) is developed based on three-port network theory. This leads to the conventional RCN-based rectifier has two subrectifiers and arranged in a dual-branch topology. Compared with the conventional RCN-based rectifier, the proposed two-port RCMN-based rectifier not only has a single-branch topology but also can work without using an individual impedance matching network. Thus, a compact size and lower circuit complexity can be achieved. The closed-form design equations of the proposed two-port RCMN are designed. For validation, a 2.45 GHz WIPR-rectifier prototype is fabricated and tested. The experimental results show that the power convert efficiency (PCE) is higher than 50 % when the input power varies from -2.1 to 13.1 dBm. The peak PCE is 74.5 % with a 10.2 dBm input power. And its physical size is only 43 mm × 24 mm.

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A novel high-efficiency portable integrated system for synergistic harvesting of radio frequency and soil energy

Shi,

Xia

et al. 2024

Energy Conversion and Management

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Design of Compact Class-F High-Efficiency Shunt-Diode Rectifier With Extended Harmonic Termination for Wireless Power Transfer

Cited by 12 publications

References 17 publications

Dual-Band Rectifier Design With High Efficiency Using Simple Dual Band-Stop Network for Wireless Power Transfer

Dual-Band Rectifier Design With High Efficiency Using Simple Dual Band-Stop Network for Wireless Power Transfer

A compact rectifier with wide dynamic range of input power based on two-port impedance compression matching network for RF energy harvesting

A novel high-efficiency portable integrated system for synergistic harvesting of radio frequency and soil energy

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