Abstract: The smart multiband antenna system is used in a communications system having an array of multiple identical antennas configured to operate as a single multiband antenna, such as a phased array. A tunable or variable capacitor, such as a varactor, is integrated between each adjacent pair of antennas in the array to adjust the electrical length or spacing between the antennas in order to optimize antenna performance characteristics, such as beam steering. For a phased array, the tunable capacitor may be adjusted to maintain an antenna spacing of ?/2 between adjacent antennas. The multiband antenna is designed to operate on several bands, and may be used for efficient multiplexing.

Abstract: An apparatus for energy conversion, comprising a piezoelectric component comprising a first part configured to convert vibrational energy into electrical energy; and an output for sending a first portion of the generated electrical energy to an electronic device, and a feedback loop for feeding a second portion of the generated electrical energy to a second part of the piezoelectric component, wherein the second part of the piezoelectric component is coupled to the first part of the piezoelectric component and is configured to convert electrical energy into vibrational energy thereby causing the first part of the piezoelectric component to vibrate.

Abstract: An apparatus for energy conversion, comprising a piezoelectric component comprising a first part configured to convert vibrational energy into electrical energy; and an output for sending a first portion of the generated electrical energy to an electronic device, and a feedback loop for feeding a second portion of the generated electrical energy to a second part of the piezoelectric component, wherein the second part of the piezoelectric component is coupled to the first part of the piezoelectric component and is configured to convert electrical energy into vibrational energy thereby causing the first part of the piezoelectric component to vibrate.