Measurements and Characterization of a Newly Developed Novel Miniature WIPT System

A Comprehensive Analysis, Design, and Experimental Evaluation of Single-Loop Polygonal Slotted RF Resonators and WPT Systems

“…Furthermore, the SGP method can also enable achieving high Q by controlling the geometry of given SGP shapes [19]. In this work, Q was defined following the conventional method which uses (12), where β represents the "−3" dB bandwidth of S 21 [35]. The RLC or LC equivalent circuits can be used to obtain the required S 21 parameters and subsequently determine Q [20].…”

“…It can also be seen that the resonator with a smaller slot area possesses higher Q and it reiterates the earlier findings mentioned above. In particular, using (12) gives the respective Q of 3.72, 1.22, and 0.67 for ζ = 6 mm, ζ = 12 mm, and ζ = 18 mm. Additionally, Table 2 presents the respective values of loaded capacitors (C e ), L, and, R corresponding to the resonance at 900 MHz.…”

“…Because of its human safety, short power transfer distance, and excellent performance, near-field WPT has been particularly well-suited to power numerous implanted medical devices such as brain stimulators, intraocular implants, cardiac pressure sensors, pacemakers, and capsule endoscopes [4]. On the other hand, they also find effective- Biomedical Implants [11] 20 × 20 10 Biomedical Implants [12] 43 × 38 23 RFIDs / Smart Cards / Sensors [13] 20 × 20 10…”

A Novel Design of Broadband Circularly Polarized Rectenna With Enhanced Gain for Energy Harvesting

“…A compact circularly polarized beam-switching system is designed for efficient wireless power transfer at 2.4 GHz [5]. Achieving optimal power transfer from antenna to rectifier requires careful impedance matching techniques for single-band [6][7][8][9][10][11][12][13][14][15][16][17][18][19], broadband [20][21][22][23][24][25], dual-band [28][29][30], and multiband [31][32][33][34] rectifiers. The input impedance of RF-DC rectifiers changes nonlinearly with input power due to rectification components, necessitating meticulous design for effective impedance matching across a wide power range [20][21][22][23][24][25].…”

“…The input impedance of RF-DC rectifiers changes nonlinearly with input power due to rectification components, necessitating meticulous design for effective impedance matching across a wide power range [20][21][22][23][24][25]. Rectifier circuits using single diodes or voltage-doubler configurations have been explored [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][29][30][31] for efficient PCE. A remarkable innovation, RAMSES [6], is an intelligent module for environmental sensing, computation, and data transfer.…”