According to the present invention, when wireless communication is performed, a signal can be formed into a spiral beam (H), the spiral pitch of the signal can be changed, and a plurality of spiral beams (H) with different spiral pitches can be transmitted and received. The present invention pertains to a wireless signal transmitting antenna (10) including a signal emitting means (A) having N number of antenna elements (A1, . . . , AN) (where N is an integer satisfying N≥2) equally spaced on a circumference of circle, and a signal distribution means (B) for generating, from an input first signal (S), N number of second signals (G1, . . . , GN) having a phase difference from one another and outputting the N number of second signals (G1, . . . , GN) to the N number of antenna elements (A1, . . . , AN), respectively, so that a spiral beam (H) with the equiphase surface inclined spirally is output from the signal emitting means (A).

An electronic device according to an embodiment of the present invention may include a housing and an antenna module disposed on one surface of the housing, wherein the antenna module may include a printed circuit board including a first layer facing the one surface of the housing, a second layer facing the first layer, and at least one ground layer disposed between the first layer and the second layer, a first antenna array disposed on the first layer, a second antenna array disposed on the second layer and at least partially overlapping the first antenna array when viewed from the one surface of the housing, and a communication circuit (radio frequency integrated circuit (RFIC)) electrically connected to the first antenna array and the second antenna array and feeding the first antenna array and the second antenna array, wherein the communication circuit may be configured to receive a first signal from an external device via at least one of the first antenna array or the second antenna array, change a phase of at least a portion of the first antenna array and the second antenna array based on the first signal, and transmit/receive a second signal in a direction of a beam formed by the changed phase. Other various embodiments could be derived from the description.

A signal generation method includes phase-changing baseband signals with respective phase changing patterns to generate respective phase-changed signals, each of the phase changing patterns being different from each other, and inverse-fast-Fourier-transforming the phase-changed signals to respective orthogonal frequency division multiplexing (OFDM) transmission signals. Each phase changing pattern has N candidates for an amount of change in a phase, N being an integer greater than two, and each candidate is periodically selected from the N candidates based on subcarriers of the respective OFDM transmission signals, a phase of the respective baseband signals being changed by the each candidate.

Methods and devices for distance measuring/ranging, as well as location measurements both in 2D and 3D are presented. More specifically, the methods and devices are for determining the time of arrival of a radio frequency signal. A method of determining a time of arrival of a radio frequency signal in a receiving device as received from a transmitting device includes receiving a radio frequency signal, determining a first phase. The first phase is defined as a phase of the received radio frequency signal. The method also includes obtaining a second phase. The second phase is defined as a phase of a reference radio frequency signal. The method also includes determining the time of arrival of the radio frequency signal based on comparing the first and second phases.

An antenna unit includes an antenna having at least two elements for emitting and/or receiving electromagnetic radiation. The antenna is arranged on a support substrate. Furthermore, the antenna unit includes an electromechanical actuator that is arranged on the support substrate and configured to take a control signal as a basis for mechanically deforming the support substrate along a spatial direction in order to adjust a distance between the at least two elements of the antenna along the spatial direction for the purpose of influencing an antenna parameter of the antenna. The antenna unit also includes a control circuit configured to generate the control signal based on a target value for the antenna parameter.

Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.

An apparatus includes a phased array antenna panel and one or more beam former circuits mounted on the phased array antenna panel. The phased array antenna panel generally comprises a plurality of antenna elements. The plurality of antenna elements are generally arranged in one or more groups. Each beam former circuit may be coupled to a respective group of the antenna elements. Each beam former circuit generally comprises a plurality of transceiver channels. Each transceiver channel generally comprises a power amplifier circuit configured, when operating in a transmit mode, to drive a respective one of the antenna elements. The power amplifier circuit generally comprises separate bias and voltage supply inputs providing additional power control.

This disclosure describes systems, methods, and devices related to secure sounding signal. A device may generate two or more sounding signals to be sent using two or more antennas to a receiving device across a plurality of symbol intervals. The device may apply a first masking signal to a first sounding signal of the two or more sounding signals over a first symbol interval of the plurality of the symbol intervals. The device may apply a second masking signal to a second sounding signal over a second symbol interval of the plurality of the symbol intervals. The device may cause to send the two or more sounding signals to receiving device using the two or more antennas.

A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

A transmission device comprising: a weighting circuitry which, in operation, generates transmission signals of n streams (n is an integer of 3 or more) by weighting modulated signals of the n streams using a predetermined fixed precoding matrix; a phase changing circuitry which, in operation, regularly changes each phase of a symbol series included in each of the transmission signals of the n streams; and a transmitter which, in operation, transmits the transmission signals of the n streams from different antennas, the phases of each of the transmission signals of the n streams being changed in each symbol, wherein the transmission signal of an i-th stream has an m.sub.i kind of phase change value y.sub.i(t) (i is an integer between 1 and n (inclusive), 0≤y.sub.i<2π, and m.sub.i is set in each stream, t is an integer of 0 or more, and indicates a symbol slot), and the phase changing circuitry changes the phase in one or more u (u=m.sub.1×m.sub.2× . . . ×m.sub.n) symbol periods using all patterns of a set of phase change values y.sub.i(t) different from each other in each symbol.