Wireless Power Transfer (WPT) is the propagation of electrical energy from a power source to an electrical load without the use of interconnecting wires. It is becoming very popular in recent applications. Wireless transmission is useful in cases where interconnecting wires are difficult, hazardous, or non-existent. Wireless power transfer is becoming popular for induction heating, charging of consumer electronics (electric toothbrush, charger), biomedical implants, Radio Frequency IDentification (RFID), contact-less smart cards and even for transmission of electrical energy from space to earth.