Disclosed are methods and devices for, UWB, ranging of a target using a plurality of antenna arrays. The method comprises: determining a first RSSI, from a first antenna of a first antenna arrays, and a second RSSI from a second antenna of a second antenna arrays; in response to the first RSSI being larger than the second RSSI, selecting the first antenna array, and selecting the second antenna array otherwise; using the selected antenna array, performing a UWB ranging measurement including measuring an angle of arrival of the signal from the target; including, if the angle of arrival of the signal from the target is out of range: selecting a different one of the plurality of antennae arrays, as a presently-selected antenna array; and, using that antenna array, performing a UWB ranging measurement including measuring an angle of arrival of the signal from the target.

An apparatus for determining information on a position of a transmitter. In one example, the apparatus includes an antenna apparatus, a control apparatus and a data processing apparatus. The antenna apparatus includes several different directional characteristics, wherein the directional characteristics are each related to an amount of spatially different receive sensitivities of the antenna apparatus. The control apparatus influences the antenna apparatus such that at least one of the directional characteristics of the antenna apparatus is activated. With the activated directional characteristic, the antenna apparatus receives a signal originating from the transmitter. The data processing apparatus processes the received signal and the amount of spatially different receive sensitivities allocated to the related activated directional characteristic to an amount of weighted receive values and determines the information on the position of the transmitter therefrom. Further, the invention relates to a respective method.

An apparatus for determining information on a position of a transmitter. In one example, the apparatus includes an antenna apparatus, a control apparatus and a data processing apparatus. The antenna apparatus includes several different directional characteristics, wherein the directional characteristics are each related to an amount of spatially different receive sensitivities of the antenna apparatus. The control apparatus influences the antenna apparatus such that at least one of the directional characteristics of the antenna apparatus is activated. With the activated directional characteristic, the antenna apparatus receives a signal originating from the transmitter. The data processing apparatus processes the received signal and the amount of spatially different receive sensitivities allocated to the related activated directional characteristic to an amount of weighted receive values and determines the information on the position of the transmitter therefrom. Further, the invention relates to a respective method.

The subject matter discloses a casing of a mobile electronic device, comprising: a body, comprising: two or more antennas for exchanging wireless signals with a target device; an electromagnetic absorbing material located between the two or more antennas; electrical circuitry for sending information concerning the wireless signals exchanged between the two or more antennas and the target device to a direction finding module, wherein the direction finding module is operative to determine a relative direction of the target device based on the wireless signals exchanged between the two or more antennas and the target device.

The subject matter discloses a casing of a mobile electronic device, comprising: a body, comprising: two or more antennas for exchanging wireless signals with a target device; an electromagnetic absorbing material located between the two or more antennas; electrical circuitry for sending information concerning the wireless signals exchanged between the two or more antennas and the target device to a direction finding module, wherein the direction finding module is operative to determine a relative direction of the target device based on the wireless signals exchanged between the two or more antennas and the target device.

The subject matter discloses a method to determine a relative direction of a target RF transmitter, performed by a direction finding (DF) system comprising at least a pair of antennas having an electromagnetic-absorbing material between them, comprising conducting wireless communication between the target RF transmitter and each one of the antennas of the DF system, measuring the time of flight (TOF) of the target RF transmitter received at each antenna, calculating the difference between the TOFs measured at each one of the antennas in the pair, and determining a relative direction of the target RF transmitter based on the TOF required to reach each of the antennas.

The subject matter discloses a method to determine a relative direction of a target RF transmitter, performed by a direction finding (DF) system comprising at least a pair of antennas having an electromagnetic-absorbing material between them, comprising conducting wireless communication between the target RF transmitter and each one of the antennas of the DF system, measuring the time of flight (TOF) of the target RF transmitter received at each antenna, calculating the difference between the TOFs measured at each one of the antennas in the pair, and determining a relative direction of the target RF transmitter based on the TOF required to reach each of the antennas.

A method for obtaining the direction of a signal incoming to a communication device is provided using a modal antenna that has multiple modes corresponding to multiple radiation patterns with a single feed.

A method for obtaining the direction of a signal incoming to a communication device is provided using a modal antenna that has multiple modes corresponding to multiple radiation patterns with a single feed.

A direction detection device includes: antennas that receive a received wave; an intensity difference imparting unit that imparts intensity differences different depending on the received-wave arrival direction to intensities of the received wave; a storage unit that stores an intensity difference table in which the intensity difference between two of the antennas is associated with the received-wave arrival direction, for each combination of any two of the antennas; a detector that detects an intensity difference between the two antennas and a phase difference between the two antennas, of the received wave; an extractor that extracts, from the table, a received-wave arrival direction corresponding to the detected intensity difference, for each combination; a calculation unit that calculates a received-wave arrival direction corresponding to the detected phase difference; and a comparator that compares the extracted received-wave arrival direction with the calculated received-wave arrival direction to acquire a matched received-wave arrival direction.