A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to cause the receiver RF chain to receive a first distance estimate between the antenna and another transceiver circuit, to calculate a second distance estimate between the antenna and the other transceiver circuit, and to determine a range estimate between the antenna and the other transceiver circuit based on the first distance estimate and the second distance estimate.

Systems and Techniques are provided for a radio frequency input/output (RFIO) circuit. An example RFIO circuit can include an a receive (Rx) path comprising a low noise amplifier (LNA). The example RFIO circuit can include a transmit (Tx) path comprising a power amplifier (PA). The example RFIO circuit can include a balun configured to RF couple an RFIO terminal to the Rx path or to the Tx path. The one or more selection components are configured to selectively enable the Rx path or the Tx path.

Systems and Techniques are provided for a radio frequency input/output (RFIO) circuit. An example RFIO circuit can include an a receive (Rx) path comprising a low noise amplifier (LNA). The example RFIO circuit can include a transmit (Tx) path comprising a power amplifier (PA). The example RFIO circuit can include a balun configured to RF couple an RFIO terminal to the Rx path or to the Tx path. The one or more selection components are configured to selectively enable the Rx path or the Tx path.

Apparatuses and methods for simultaneously operating as a wireless radio and monitoring the local frequency spectrum. For example, described herein are wireless radio devices that use a secondary receiver to monitor frequencies within the operating band and prevent or avoid interferers, including in particular half-IF interferers. The systems, devices, and methods described herein may adjust the intermediate frequency in a superheterodyne receiver to select an intermediate frequency that minimizes interference. In particular, described herein are apparatuses and methods that use a second receiver which is independent of the first receiver and may be connected to the same receiving antenna to monitor the geographically local frequency spectrum and may detect spurious interferers, allowing the primary receiver to adjust the intermediate frequency and avoid spurious interferes.

Apparatuses and methods for simultaneously operating as a wireless radio and monitoring the local frequency spectrum. For example, described herein are wireless radio devices that use a secondary receiver to monitor frequencies within the operating band and prevent or avoid interferers, including in particular half-IF interferers. The systems, devices, and methods described herein may adjust the intermediate frequency in a superheterodyne receiver to select an intermediate frequency that minimizes interference. In particular, described herein are apparatuses and methods that use a second receiver which is independent of the first receiver and may be connected to the same receiving antenna to monitor the geographically local frequency spectrum and may detect spurious interferers, allowing the primary receiver to adjust the intermediate frequency and avoid spurious interferes.

A wireless signal receiving device and system are provided. The wireless signal receiving system includes a wireless signal receiving device and a Global Position System (GPS) wireless signal receiving module. The wireless signal receiving device includes a first antenna for receiving wireless signals in a plurality of frequency bands, at least one second antenna for receiving first wireless signals in a predetermined frequency band, a filter coupled to the first antenna and for splitting the wireless signals in the plurality of frequency bands into second wireless signals in the predetermined frequency band, and at least one switching device coupled to the filter and the at least one second antenna and for respectively outputting the first wireless signals and the second wireless signals. The GPS wireless signal receiving module is coupled to the wireless signal receiving device, and is for receiving the first wireless signals or the second wireless signals.

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.

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.

A radio frequency scanner system for mobile network testing includes at least one switchable directional antenna assembly, a radio frequency receiver, and a processing circuit. The antenna assembly includes several directional antennas oriented in different directions. The radio frequency receiver is configured to process the radio frequency signal received by the antenna assembly, thereby converting the at least one radio frequency signal to a baseband signal. The processing circuit is configured to process at least two baseband signals associated with two different directional antennas in order to determine an angle of arrival (AoA) of the at least one radio frequency signal with respect to the at least one antenna assembly. The processing circuit is configured to estimate a geographic location of a base station emitting the at least one radio frequency signal based on the angle of arrival of the at least one radio frequency signal.

Disclosed herein is a phased array antenna system that includes: a first array of antenna elements having a first and second antenna element; a second array of antenna elements having a third and fourth antenna element; a beamforming integrated circuit (IC) coupled to the first and second arrays; and a set of transmission lines coupling the beamforming IC to the first and second arrays. The first and second arrays are parallel to and facing in opposite directions of each other. The set of transmission lines is configured to delay radio frequency (RF) signals from the beamforming IC to first and third antenna elements.