Systems, apparatuses, and methods to response to distinguish a ghost target from an actual target based on radar signals is provided. In particular, the disclosure provides an intrusion detection system adapted to receive radar signals and distinguish a potential ghost target from a legitimate target based on a signal to noise ratio of the radar signals and a range to the ghost target and the legitimate target.

A fill level radar device is provided, including two at least partially different signal source assemblies for heterodyne mixing of the received reflected signal of the filling material surface with a second signal in order to create an intermediate frequency signal having a uniform frequency that does not depend on the frequency of the first signal.

A pair of programmable state machines may be included in a transmitter integrated circuit of a scanner (e.g. a body scanner) to control the sub-circuits of the transmitter integrated circuit. The first programmable state machine may be used to control the signal processor of the transmitter that facilitates generation of a signal to be transmitted at a target, such as a user to be scanned. The second programmable state machine may be used to control the transmitter's selection of a transmission channel for transmitting the signal in which provides the signal to be transmitted to an antenna. Further, the receiver integrated circuit of the scanner may include a similar pair of programmable state machines for controlling the receive signal processor and receiver of the receiver integrated circuit. The inclusion of the state machines can reduce both the scan time and the circuit complexity of the scanner.

An antenna-integrated module includes: a substrate; one or more semiconductor chips each arranged on the substrate; and one or more antenna elements that are connected to the one or more semiconductor chips. At least one antenna element among the one or more antenna elements is arranged in the same region on the substrate on which the one or more semiconductor chips are arranged.

A system and method for detecting proximity of a user within a particular distance of a radio device is disclosed. The method includes transmitting a signal via a transmitter and antenna of the radio device, receiving a received signal via a receiver and the antenna, processing the received signal for distinguishing a signal reflected from the user from a leaked portion of the transmitted signal, and reducing power of the radio device in response to the processing.

A method for performing wireless data communication is disclosed, which uses a first device and a second device, and which comprises the steps of a) transmitting an outgoing radar signal by the first device, b) determining, by the first device, a receive property of an incoming radar signal which is associated with the outgoing radar signal, and c) setting at least one parameter for performing the wireless data communication by the first device based on the receive property of the incoming radar signal.

An antenna-integrated module includes: one or more semiconductor chips each including a silicon substrate, a metal layer stacked on a first surface of the silicon substrate, and one or more frequency converters; an insulating layer that surrounds the one or more semiconductor chips; a re-distribution layer that is stacked on a first surface of the insulating layer and on a first surface of the metal layer; one or more first antenna elements that are provided on the first surface of the metal layer with a first conductor pattern and that are connected to the one or more frequency converters; and one or more second antenna elements that are provided with a second conductor pattern on a first surface of the re-distribution layer stacked on the first surface of the insulating layer and that are connected to the one or more frequency converters.

A fill level radar device including a transmission-power adjustment apparatus which is configured to adjust the power of the transmission signal depending on the frequency of the transmission signal in accordance with a predefinable correlation. As a result, frequency-dependent absorption changes in the filling material atmosphere can be compensated for by the device.

A fill level radar device for fill level measurement in accordance with the reflectometer method is provided, including a control circuit that is designed for changing the number of steps, the frequency spacings between the individual steps, the durations of the individual steps, the width of the frequency band, the frequency of the lowest step and/or the frequency of the highest step. The operating sequence can be optimised thereby.

A fill level radar device including a signal source assembly, an operating parameter determination circuit and an operating parameter adjustment circuit that is designed to change a sweep parameter of a continuous wave transmission signal on the basis of a characteristic variable of a measurement environment or measurement sequence that is input by the user or detected by the measurement device.