An Efficient Far-Field Wireless Power Transfer via Field Intensity Shaping Techniques

Uplink Array Calibration via Far-Field Power Maximization

Uplink antenna arrays have the potential to greatly increase the Deep Space Network’s high-data-rate uplink capabilities as well as useful range, and to provide additional uplink signal power during critical spacecraft emergencies. While techniques for calibrating an array of receive antennas have been addressed previously, proven concepts for uplink array calibration have yet to be demonstrate...

Optimization of Near-Field Wireless Power Transfer Using Evolutionary Strategies

The parameter space for power transfer by nearfield, magnetically coupled, half wavelength coil resonators was explored by evolving the coil shape using an evolutionary strategy and method of moments antenna analysis. The starting coil shapes were solenoid, which were evolved to enhance the power transfer between multiple coils. Through the use of an appropriate fitness function and tuned searc...

Realizing Efficient Wireless Power Transfer in the Near-Field Region Using Electrically Small Antennas

Phased Array Excitations for Efficient Near-field Wireless Power Transmission

Gyrotron Internal Mode Converter Reflector Shaping from Measured Field Intensity

We present the formulation and experimental results of a new approach to designing internal mode converter reflectors for high-power gyrotrons. The method employs a numerical phase retrieval algorithm that reconstructs the field in the mode converter from intensity measurements, thus accounting for the true field structure in shaping the beam-forming reflectors. An outline for designing a four-...