Reconfigurable antennas are provided. A reconfigurable antenna includes a plurality of antenna radiators and a plurality of feeds that are electrically or electromagnetically coupled to the plurality of antenna radiators. The plurality of feeds control current or voltage of the plurality of antenna radiators. Related methods of operating a reconfigurable antenna are also provided.

An antenna system for use with a media device is provided. The antenna system includes a multi-mode active antenna configurable to operate in a plurality of modes. Each mode of the plurality of has a distinct radiation pattern. The antenna system includes a supplemental tuner that is separate from a primary tuner associated with the media device. The antenna system includes a switching device movable between at least two positions to selectively couple the active antenna to the supplemental tuner. When the switching device is in a first position, the active antenna is coupled to the supplemental tuner. When the switching device is in a second position, the active antenna is coupled to the media device.

An antenna system for use with a media device is provided. The antenna system includes a multi-mode active antenna configurable to operate in a plurality of modes. Each mode of the plurality of has a distinct radiation pattern. The antenna system includes a supplemental tuner that is separate from a primary tuner associated with the media device. The antenna system includes a switching device movable between at least two positions to selectively couple the active antenna to the supplemental tuner. When the switching device is in a first position, the active antenna is coupled to the supplemental tuner. When the switching device is in a second position, the active antenna is coupled to the media device.

Methods and apparatus for a tunable dual spectrum antenna aperture including a RF antenna having first and second portions, wherein the first portion comprises a photoconductor material having a conductive state and a non-conductive state, and an IR sensor to detect IR energy. The state of the first portion determines a size of the RF antenna.

A RF transmitting device and method for transmitting digital information wherein the device is connected to or connectable with an antenna, the RF transmitting device having an RF source or transmitter, an electronic switch, a plurality electromechanical resonators each connected to the electronic switch. The electronic switch connects a selected one or selected ones of the electromechanical resonators between the RF source or transmitter and the antenna. Alternatively, the electronic switch connects a selected one or selected ones of the electromechanical resonators between different portions of the antenna. The electronic switch is controlled by a digital control unit for causing the electronic switch to couple RF energy produced by the RF source or transmitter to the antenna via the selected one or selected ones of the plurality of electromechanical resonators.

A RF transmitting device and method for transmitting digital information wherein the device is connected to or connectable with an antenna, the RF transmitting device having an RF source or transmitter, an electronic switch, a plurality electromechanical resonators each connected to the electronic switch. The electronic switch connects a selected one or selected ones of the electromechanical resonators between the RF source or transmitter and the antenna. Alternatively, the electronic switch connects a selected one or selected ones of the electromechanical resonators between different portions of the antenna. The electronic switch is controlled by a digital control unit for causing the electronic switch to couple RF energy produced by the RF source or transmitter to the antenna via the selected one or selected ones of the plurality of electromechanical resonators.

A sensor may include a bladder, and a deformable conductor disposed on the bladder such that deformation of the bladder causes deformation of the deformable conductor, wherein the bladder is constrained so as to enhance the deformation of the conductor in response to the deformation of the bladder. A method may include applying a stimulus to a bladder having a deformable conductor attached thereto, detecting a change in an electrical characteristic associated with the deformable conductor in response to the stimulus, and selectively constraining the bladder to amplify the change in electrical characteristic in response to the stimulus.

A sensor may include a bladder, and a deformable conductor disposed on the bladder such that deformation of the bladder causes deformation of the deformable conductor, wherein the bladder is constrained so as to enhance the deformation of the conductor in response to the deformation of the bladder. A method may include applying a stimulus to a bladder having a deformable conductor attached thereto, detecting a change in an electrical characteristic associated with the deformable conductor in response to the stimulus, and selectively constraining the bladder to amplify the change in electrical characteristic in response to the stimulus.

An antenna system having at least one active element with a first end thereof for connection to a radio receiver, transmitter or transceiver and at least one electromechanical resonator connected in series with (i) at least portion of said at least one active element and at least another portion of said at least one active element or (ii) said at least one active element and said radio receiver, transmitter or transceiver. The at least one active element exhibits capacitive reactance at an intended frequency of operation and the at least one electromechanical resonator exhibits inductive reactance at the intended frequency of operation, the inductive reactance of the at least one electromechanical resonator offsetting or partially offsetting the capacitive reactance of the at least one antenna element at the intended frequency of operation.

An antenna apparatus for a mobile terminal is provided. The antenna apparatus includes an antenna pattern, a first electric circuit and a second electric circuit respectively connected between both ends of the antenna pattern and a system ground, and a third electric circuit disposed between the antenna pattern and a feeding line, wherein the first electric circuit and the second electric circuit extend electrical wavelengths of the antenna pattern and the third electric circuit increases input impedance matching.