2.45 GHz /5.8 GHz Dual-Band Power Amplifier for Wireless Power Transfer in Space Applications

Niotaki, Kyriaki; Cañavate-Sánchez, M. J.; Collado, Ana; Goussetis, George; Georgiadis, Apostolos; Brazil, T.J.

doi:10.1049/ic.2017.0006

Cited by 6 publications

(3 citation statements)

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“…But only simulation results were presented. The same occurs in [4], where the designed dual-band PA uses the same frequency bands as in this work and only lower-band measured performance is shown. It uses Substrate Integrated Waveguide (SIW) technology, instead of microstrip transmission lines.…”

Section: Introductionsupporting

confidence: 57%

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: Introductionsupporting

confidence: 57%

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

et al. 2022

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“…When the beamforming method is used, a large amount of energy is transmitted. At this time, it is necessary to be able to select and transmit a different frequency according to the surrounding environment because it may affect the surrounding communication frequency [4]. In the case of a method that can transmit only the same frequency, there is a disadvantage in that it may cause frequency interference with other systems that use RF wireless charging power using different Industry-Science-Medical (ISM) bands and ISM bands.…”

Section: Introductionmentioning

confidence: 99%

Low Phase-Noise, 2.4 and 5.8 GHz Dual-Band Frequency Synthesizer with Class-C VCO and Bias-Controlled Charge Pump for RF Wireless Charging System in 180 nm CMOS Process

Kim

Hejazi

et al. 2022

Electronics

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This paper presents an integer-N phase-locked loop (PLL) for an RF wireless charging system. To improve the phase-noise characteristics under low power, a constant amplitude control class-C voltage-controlled oscillator (VCO) with a DC-DC converter, and a bias-controlled charge pump with a feedback loop are proposed. The frequency range of the VCO is 4.5–6.1 GHz, the target frequency of the proposed PLL is 2.4 and 5.8 GHz in the industry–science–medical band. It is designed with a same phase margin and bandwidth using one loop filter. The proposed PLL consumes less than 8 mW from a 1.8 V power supply with a settling time of fewer than 20 μs and an area of 1200 μm × 800 μm in the 180 nm CMOS process. For a carrier frequency offset of 1 MHz, the measured phase noise is −118.5 dBc/Hz at 2.4 GHz and −116.6 dBc/Hz at 5.8 GHz. Its FoM including the phase noise is −197 dB at 2.4 GHz and −202.8 GHz at 5.8 GHz, outperforming other PLLs designed in the 180 nm CMOS process.

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“…On the other hand, for dual-band RF WPT, a printed dual-band antenna of 2.5 and 4.5 GHz was proposed [16] and a dual-band antenna operating at 2.45 and 5.8 GHz was designed based on a split-ring resonator and fractal geometry [17], respectively. Another study presents the design of a dual-band power amplifier operating at 2.4 and 5.8 GHz based on the concept of composite right/left-handed (CRLH) unit cells and substrate-integrated waveguide (SIW) technology [18]. A dual-band rectenna optimized to convert far-field RF energy to DC voltage at very low received power levels at 915 MHz and 2.44 GHz was also developed [19].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna

et al. 2021

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In this paper, a dual-band RF wireless power transfer (WPT) system with a shared-aperture dual-band Tx array antenna for 2.4 and 5.8 GHz is proposed. The final configuration of the Tx array, which is made up of 2.4 GHz right-handed circular polarization (RHCP) patches and 5.8 GHz RHCP patches, is derived from the optimization of 2.4 and 5.8 GHz thinned arrays, ultimately to achieve high transmission efficiency for various WPT scenarios. The dual-band RF WPT Tx system including the Tx array antenna and a Tx module is implemented, and Rx antennas with a 2.4 GHz patch, a 5.8 GHz patch, and a dual-band (2.4 and 5.8 GHz) patch are developed. To validate the proposed dual-band RF WPT system, WPT experiments using a single band and dual bands were conducted. When transmitting RF wireless power on a single frequency (either 2.482 GHz or 5.73 GHz), the received power according to the distance between the Tx and Rx and the position of the Rx was measured. When the distance was varied from 1 m to 3.9 m and the transmitted power was 40 dBm, the received power value at 2.482 GHz and 5.73 GHz were measured and found to be 24.75–13.5 dBm (WPT efficiency = 2.985–0.224%) and 19.25–6.8 dBm (WPT efficiency = 0.841–0.050%), respectively. The measured results were in good agreement with the calculated results, and it is revealed that the transmission efficiency when wireless power is transmitted via beam-focusing increases more than that with conventional beam-forming. Furthermore, the dual-band WPT experiment proves that 2.482 GHz beam and 5.73 GHz beams can be formed individually and that their wireless power can be transmitted to a dual-band Rx or two different Rx.

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2.45 GHz /5.8 GHz Dual-Band Power Amplifier for Wireless Power Transfer in Space Applications

Cited by 6 publications

References 0 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

Low Phase-Noise, 2.4 and 5.8 GHz Dual-Band Frequency Synthesizer with Class-C VCO and Bias-Controlled Charge Pump for RF Wireless Charging System in 180 nm CMOS Process

Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna

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