Time‐modulated multi‐tone antenna array for wireless information and power transfer

Abstract

This paper aims to design a multi-tone radiator exploiting harmonic radiation characteristic of time-modulated antenna array for wireless information and power transmission (WIPT) and multi-operational WIPT receiver. The timemodulated linear antenna array (TMLAA) radiating simultaneously at modulating and harmonic frequencies separated in multiple switching periods is utilized as a multi-tone radiating system. TMLAA with suitable power in harmonic bands generates multi-tone radiation by employing an optimized switching sequence. The ON and OFF time instants of the TMLAA are optimized to suppress sidelobe level and enhance sideband level. A populationbased optimization algorithm, teaching learning based optimization (TLBO), is employed to optimize the ON and OFF instants of the TMLAA to suppress sidelobe level and enhance sideband level. TLBO is utilized for a 16-element TMLAA with minimizing cost function to achieve the above objectives. The 16-element TMLAA with optimized switching radiates multi-tone beams with a minimum of 5 dB peak power difference exploited as WIPT. The purpose of multi-operation is accomplished by utilizing the Wilkinson power divider in the receiver system; its power dividing capability is analyzed using applied wave research (AWR). A voltage doubler type rectifier is modeled for DC generation and is tested using AWR. The DC generating capability is tested for fixed power available at various frequencies, and the fixed desired frequency with various available power levels is tested. The results show that the designed circuitry provides a maximum of 80% power conversion efficiency (PCE).applied wave research (AWR), CST microwave studio, rectenna, teaching learning based optimization (TLBO), time-modulated linear antenna array, Wilkinson power divider, wireless information and power transfer (WIPT) | INTRODUCTIONWireless terminals' usage rapidly increased due to the explosive rate of device-to-device communication in the era of Internet of Things (IoT). With the development of wireless power transfer (WPT), the charging burden of wireless terminals with cables is lowered. The scheme of receiving electricity through the air by means of inductive coupling was

Applications of Nanomaterials in RFID Wireless Sensor Components

“…RFID is extensively employed in everyday life and industry due to its notable attributes such as high data throughput, contactless recognition, and data readability from multiple directions [16][17][18][19][20][21][22][23]. Notably, ongoing research is exploring the establishment of a wireless sensor network based on RFID communication methods capable of Wireless Information and Power Transfer (WIPT), with applications to various sensor devices [24][25][26].…”