Afraz Haider, Jonathan Arifin, Muhammad Jivani, Karan Kataria,

1
Wireless Power Transfer(WPT)
Afraz Haider, Jonathan Arifin, Muhammad Jivani,
Karan Kataria, Sesh Andavolu, Ziad Ghneim
Department of Electrical Engineering Erik Jonsson
School of Engineering Computer
Science University of Texas at Dallas Richardson,
Texas 75083-0688, U.S.A.
Project Results
Project Goals

• Our research and detailed study regarding
  different aspects of RF rectifying circuit
  such as microstrip and patch antenna design
  helped us gain a better understanding of the
  formulation and layout for a charging circuit.
• Based on our research and guidance from the UTD
  faculty members, we designed a Five Stage
  wireless charging circuit and simulated it on
  AWR software. The simulation displayed an
  efficiency of 50?
• Using PCB 64 millimeter board, we then
  constructed a Five Stage wireless charging
  circuit capable of functioning for 915 MHz
  operations. Our design of the wireless
  charger circuit consisted of two quarter wave
  whip antennas for transmitting and
  receiving purposes that were impedance
  matched to Schottky diodes and other lumped
  elements.

• To improve our design for effective wireless
  power transmissions utilizing 915 MHz ISM-band
  source frequency which is compatible with
  commercial devices.
• Based on our research and preliminary
  experimental verification, we will built a
  multiple stage (Five Stage) wireless charger
  capable of acquiring and converting 915 MHz
  source frequency into usable DC power.
• By the end of second phase of our design
  project, it is our goal to power a small
  device wirelessly with our proposed circuit
  design.

Project Overview

• For Senior Design II, we decided to revise our
  rectenna design by building a Five Stage wireless
  charger pump for acquiring optimum DC load. Based
  on our research, 915 MHz source frequency best
  served our purpose in achieving our goal of
  obtaining usable DC power at the output load.
• Timeline

Project Conclusions/Outcomes

• Using the new design, we received a better
  output power.
• Successfully simulated our rectenna design in
  AWR Microwave Office and
• VSS environment.
• Successfully completed the design and layout of
  the circuit on the
• PCB board.
• Sufficiently rectified Radio Frequencies from
  an antenna .
• The projects results indicated that we can
  achieve much better efficiency
• by utilizing better antennas.
• Overall, it was a useful learning experience
  that helped us gain knowledge related to
  wireless power applications.