Analysis of Received Power in RF Wireless Power Transfer System With Array Antennas
In this paper, a method for calculating the received power in a radio-frequency wireless power transfer system with array antennas is proposed. The received power is derived based on the superposition of the electric fields that radiate from individual transmitter (Tx) elements and are captured by e...
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| Veröffentlicht in: | IEEE access 2021, Vol.9, p.76315-76324 |
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| creator | Song, Chan Mi Trinh-Van, Son Yi, Sang-Hwa Bae, Jongseok Yang, Youngoo Lee, Kang-Yoon Hwang, Keum Cheol |
| description | In this paper, a method for calculating the received power in a radio-frequency wireless power transfer system with array antennas is proposed. The received power is derived based on the superposition of the electric fields that radiate from individual transmitter (Tx) elements and are captured by each receiver (Rx) element. That is expressed in a finite series form with the radiation patterns of an element considering mutual coupling in the array and corresponding distances between the elements of Tx and Rx. Unlike conventional methods (such as the Friis and Goubau formulas), this approach is able to calculate the received power precisely in both Fresnel and far-field regions. It is also efficiently applicable to various cases, such as those involving beamforming and with varying positions of Rx. The calculated results using this method are applied to a 5.2 GHz WPT system with array antennas and verified through comparisons with both simulation and experimental results. |
| doi_str_mv | 10.1109/ACCESS.2021.3083270 |
| format | Article |
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The received power is derived based on the superposition of the electric fields that radiate from individual transmitter (Tx) elements and are captured by each receiver (Rx) element. That is expressed in a finite series form with the radiation patterns of an element considering mutual coupling in the array and corresponding distances between the elements of Tx and Rx. Unlike conventional methods (such as the Friis and Goubau formulas), this approach is able to calculate the received power precisely in both Fresnel and far-field regions. It is also efficiently applicable to various cases, such as those involving beamforming and with varying positions of Rx. The calculated results using this method are applied to a 5.2 GHz WPT system with array antennas and verified through comparisons with both simulation and experimental results.</description><identifier>ISSN: 2169-3536</identifier><identifier>EISSN: 2169-3536</identifier><identifier>DOI: 10.1109/ACCESS.2021.3083270</identifier><identifier>CODEN: IAECCG</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Antenna arrays ; Antenna measurements ; Antenna radiation patterns ; Antennas ; Array antenna ; Array signal processing ; Beamforming ; Electric fields ; Far fields ; Fresnel region ; Friis formula ; Mathematical analysis ; Mutual coupling ; power transmission efficiency ; Radio frequency ; received power ; Receiving antennas ; Series (mathematics) ; Transmitting antennas ; wireless power transfer ; Wireless power transmission</subject><ispartof>IEEE access, 2021, Vol.9, p.76315-76324</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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The received power is derived based on the superposition of the electric fields that radiate from individual transmitter (Tx) elements and are captured by each receiver (Rx) element. That is expressed in a finite series form with the radiation patterns of an element considering mutual coupling in the array and corresponding distances between the elements of Tx and Rx. Unlike conventional methods (such as the Friis and Goubau formulas), this approach is able to calculate the received power precisely in both Fresnel and far-field regions. It is also efficiently applicable to various cases, such as those involving beamforming and with varying positions of Rx. 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| subjects | Antenna arrays Antenna measurements Antenna radiation patterns Antennas Array antenna Array signal processing Beamforming Electric fields Far fields Fresnel region Friis formula Mathematical analysis Mutual coupling power transmission efficiency Radio frequency received power Receiving antennas Series (mathematics) Transmitting antennas wireless power transfer Wireless power transmission |
| title | Analysis of Received Power in RF Wireless Power Transfer System With Array Antennas |
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