Smart Antenna System with Memcapacitors

Intelligent RF circuits and systems can potentially be implemented with memory devices. The characteristic of a memcapacitor and its application to RF band are discussed. Then, a memory phase shifter is proposed using the transmission lines loaded with memcapacitors. The phase shift over 360° is achieved with a low insertion loss when properly selecting the states of memcapacitors. A smart antenna system incorporated with the proposed memory phase shifters is designed. The main beam can be adjusted to the direction of arrival of the incident wave so as to achieve an optimal reception. Intelligent RF applications are expected with various memory devices.