In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to communicate RF signals in an RF band and to communicate MMW signals in a MMW frequency band with a remote device. At least one transceiver is configured to generate the RF signals conveying a command to the remote device to transmit probe signals in the MMW frequency band, to receive the probe signals via the dual-band antenna in the MMW frequency band, and is initialized with first antenna beam steering parameters to facilitate a first antenna beam of the dual-band antenna array for the operation in the MMW frequency band. A controller is configured to generate the first antenna beam steering parameters based on the probe signals and to generate the control signal to switch the dual-band antenna array to the operation in the MMW frequency band after transmission of the RF signals.

A measurement apparatus and method for measurement of a radio frequency, RF, signal, said measurement apparatus comprising a signal input adapted to receive an RF-signal being split into a first measurement signal path and into a second measurement signal path of said measurement apparatus, wherein said first measurement signal path is adapted to measure the split RF-signal within a predefined first frequency band around a predefined measurement frequency, wherein said second measurement signal path is adapted to measure a current frequency at a power maximum of the split RF-signal in a predefined second frequency band, and wherein the RF-signal measured in said first measurement signal path is shifted in the frequency domain depending on the current frequency measured in said second measurement signal path.

An apparatus includes an antenna, a transmitter configured to generate an outgoing electrical signal, and a receiver configured to receive an incoming electrical signal. The apparatus also includes a transformer configured to couple the antenna and the transmitter such that the outgoing electrical signal causes the antenna to radiate outgoing electromagnetic energy, couple the antenna and the receiver such that the incoming electrical signal is based on incoming electromagnetic energy received by the antenna, and electrically isolate the transmitter and the receiver. The antenna may include inner and outer compensating coils, the compensating coils may be configured to additively radiate the outgoing electromagnetic energy, and the incoming electrical signal may be based on a difference between the incoming electromagnetic energy as received by the compensating coils.

An electronic device is provided, which includes a housing, a first antenna at a first position, a second antenna at a second position, and a wireless communication circuit inside the housing and connected to the first and second antennas and including modem, a source RF circuit connected to modem and generating an IF signal, a first RF circuit at a third position closer to the first position, a second RF circuit at a fourth position closer to the second position, wherein the first and second RF circuits alternately receive a signal from the source RF circuit to transmit a signal through the first and second antennas, a first electrical path between the source RF circuit and the first RF circuit, a second electrical path between the source RF circuit and the second RF circuit, and a third electrical path between the first and second RF circuits, wherein the first RF circuit transmits a first feedback of the transmission signal to the source RF circuit through the third and second electrical paths, and wherein the second RF circuit transmits a second feedback of the transmission signal to the source RF circuit through the third and first electrical paths.

In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to communicate RF signals in an RF band and to communicate MMW signals in a MMW frequency band with a remote device. At least one transceiver is configured to generate the RF signals conveying a command to the remote device to transmit probe signals in the MMW frequency band, to receive the probe signals via the dual-band antenna in the MMW frequency band, and is initialized with first antenna beam steering parameters to facilitate a first antenna beam of the dual-band antenna array for the operation in the MMW frequency band. A controller is configured to generate the first antenna beam steering parameters based on the probe signals and to generate the control signal to switch the dual-band antenna array to the operation in the MMW frequency band after transmission of the RF signals.

The present description concerns a transmitarray cell (105) adapted to implementing a full-duplex communication, the cell comprising: a first antenna element (105a) located on a first surface of the cell; a second antenna element (105b) located on a second surface of the cell, opposite to the first surface; a transmit channel comprising, between the first and second antenna elements, a first phase-shift and amplifier circuit (203a); and a receive channel comprising, between the first and second antenna elements, a second phase-shift and amplifier circuit (203b).

In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to communicate RF signals in an RF band and to communicate MMW signals in a MMW frequency band with a remote device. At least one transceiver is configured to generate the RF signals conveying a command to the remote device to transmit probe signals in the MMW frequency band, to receive the probe signals via the dual-band antenna in the MMW frequency band, and is initialized with first antenna beam steering parameters to facilitate a first antenna beam of the dual-band antenna array for the operation in the MMW frequency band. A controller is configured to generate the first antenna beam steering parameters based on the probe signals and to generate the control signal to switch the dual-band antenna array to the operation in the MMW frequency band after transmission of the RF signals.

A communications circuit includes a first circuit block and a second circuit block. The first circuit block includes a first splitter, a first signal path coupled to a first output of the first splitter, a second signal path coupled to a second output of the first splitter, and a first switch configured to couple the second signal path to a third signal path or to couple a fourth signal path to the third signal path. The second circuit block includes a second splitter, a fifth signal path coupled to a first output of the second splitter, a sixth signal path coupled to a second output of the second splitter, and a second switch configured to couple the sixth signal path to the third signal path or to couple a seventh signal path to the third signal path. The third signal path extends between the first and second circuit blocks.

Systems and methods for diplexer circuits with leakage cancellation are provided. In one aspect, a diplexer circuit including first and second radio frequency transceiver terminals and a first antenna terminal, and first and second parallel communication paths extending between the first radio frequency transceiver terminal and the first antenna terminal, and third and fourth parallel communication paths extending between the second radio frequency transceiver terminal and the first antenna terminal. The circuit also includes a first phase shifter configured to apply a first phase shift to a first radio frequency transmit signal on the first communication path, a second phase shifter configured to apply a second phase shift to a second radio frequency on the second communication path, and a third phase shifter configured to apply a third phase shift to the first radio frequency transmit signal on the third communication path.

A wireless signal receiving device and system are provided. The wireless signal receiving device includes: a plurality of antennas for receiving a first wireless signal, a second wireless signal and an external antenna wireless signal; a first signal splitting device for splitting the external antenna wireless signal into a third wireless signal and a fourth wireless signal in different frequency bands; a first signal switching device for individually switching and outputting wireless signals; a second signal switching device for individually switching and outputting wireless signals; a first module switching device for switching output routes of wireless signals; a second module switching device for switching output routes of wireless signals; and a first signal combination device for combining wireless signals into a fifth wireless signal.