The present invention provides a wireless device for effecting two way wireless transmission, an antenna feed network, and a patch antenna. The wireless device includes an antenna assembly having two inputs accepting two feed signals shifted a feed signal phase difference apart. The antenna assembly receives a radiated signal and produces first and second received signals. First and second reflected feed signals are also produced at the two antenna inputs. A transmitter produces a transmission signal and a receiver receives the radiated signal while the transmission signal is transmitted by the antenna assembly. The antenna feed network interconnects the transmitter port, the receiver port, and the antenna assembly and produces the received signal while effecting substantial cancellation of the first and second reflected feed signals. Additionally, or alternatively, first and second transmission leakage signals at the received signal output substantially cancel each other.

An electronic apparatus capable of reducing SAR and, simultaneously, suppressing degradation of antenna efficiency is provided. To that end, an electronic apparatus includes a first temple to be positioned on one side of the user's head when the electronic apparatus is worn on the user's head, a second temple to be positioned on the other side of the user's head when the electronic apparatus is worn on the user's head, an first antenna formed in the first temple, an second antenna formed in the second temple, and a transceiver circuit for supplying power to the first antenna and the second antenna.

A receiver system (100) comprising: a plurality of receiver-input-terminals (102), each of which is configured to receive an input-signal from a respective antenna (106), wherein the input-signals comprise: i. one or more undesired-signal-components; and ii. one or more combined-signal-components. The receiver system (100) also includes a spatial-information-processing-block (112; 212) configured to: calculate spatial information (222) of the undesired-signal-components of the plurality of input-signals; calculate spatial information (220) of the combined-signal-components of the plurality of input-signals; calculate weighting-coefficients (226) for each of the input-signals based on the spatial information (220) of the combined-signal-components and the spatial information (222) of the undesired-signal-components; and combine the plurality of input-signals by applying the weighting-coefficients to each of the input-signals to provide a spatial-output-signal (114; 214). The receiver system (100) further includes a signal-combiner (130) configured to combine a plurality of signal-processing-path-output-signals (110) with the spatial-output-signal (114; 214) in order to provide a receiver-output-signal (108).

A device configured for operating in a wireless communication network is configured for forming an antenna radiation pattern for communicating with a communication partner. The antenna radiation pattern includes a main lobe and side lobes. The device is configured for controlling the main lobe towards a path to the communication partner; and to control the side lobes to address interference at the location of a further device.

A receiver system (100) comprising: a plurality of receiver-input-terminals (102), each of which is configured to receive an input-signal from a respective antenna (106), wherein the input-signals comprise: i. one or more undesired-signal-components; and ii. one or more combined-signal-components. The receiver system (100) also includes a spatial-information-processing-block (112; 212) configured to: calculate spatial information (222) of the undesired-signal-components of the plurality of input-signals; calculate spatial information (220) of the combined-signal-components of the plurality of input-signals; calculate weighting-coefficients (226) for each of the input-signals based on the spatial information (220) of the combined-signal-components and the spatial information (222) of the undesired-signal-components; and combine the plurality of input-signals by applying the weighting-coefficients to each of the input-signals to provide a spatial-output-signal (114; 214). The receiver system (100) further includes a signal-combiner (130) configured to combine a plurality of signal-processing-path-output-signals (110) with the spatial-output-signal (114; 214) in order to provide a receiver-output-signal (108).

The present invention relates to a new on-body dual antiphase antenna design and a plurality of its modifications to better transmit a radio frequency signal into human or animal body, or receive a radio frequency signal from human or animal body. The antiphase transmission and/or reception is achieved by connecting each individual patch antenna to a 180 degrees microwave power splitter or to a 180 degrees microwave power combiner.

A device comprises antennas and a signal processor, and each antenna comprises antenna elements. The signal processor is configured to: receive an input signal for a multiple-input multiple-output (MIMO) operation; generate complex weights; generate feed signals based on the input signal and the complex weights; and provide the feed signals to the antenna elements so that the MIMO operation uses at least two antenna elements from two different antennas.

A wireless power transmission device includes a power transmitter to transmit a wireless power signal through a plurality of first antennas, a propagation path estimation unit to estimate first propagation path information characterizing a propagation path between the plurality of first antennas and a predetermined antenna, a propagation path extraction unit to extract second propagation path information characterizing a propagation path passing through a moving body, based on at least one of a difference on a time axis of a plurality of pieces of the first propagation path information each acquired at different times, and filtering on a frequency axis, a weight calculator to calculate a weight vector that determines a directivity of a combined power transmission beam formed by the plurality of first antennas, and a controller to control an amplitude and a phase of the wireless power signal inputted to each of the plurality of first antennas.

A wireless power transmission device includes a power transmitter to transmit a wireless power signal through a plurality of first antennas, a propagation path estimation unit to estimate first propagation path information characterizing a propagation path between the plurality of first antennas and a predetermined antenna, a propagation path extraction unit to extract second propagation path information characterizing a propagation path passing through a moving body, based on at least one of a difference on a time axis of a plurality of pieces of the first propagation path information each acquired at different times, and filtering on a frequency axis, a weight calculator to calculate a weight vector that determines a directivity of a combined power transmission beam formed by the plurality of first antennas, and a controller to control an amplitude and a phase of the wireless power signal inputted to each of the plurality of first antennas.

The present invention relates to a microwave sensing device that uses antennas in the form of a 21 array with two radiators driven out of phase via a 180 degree power splitter for measuring a radio-frequency signal propagating through a mammalian specimen to obtain an integral estimate of bone density.