Abstract: A radar sensor includes a transmitter module, a receiver module, and a lens device. The transmitter module has a transmitter-side patch array antenna and transmits radar signals with a first directivity. The receiver module has a receiver-side patch array antenna and receives the radar signals reflected in the detection area. The lens device has a first lens for the transmitted radar signals and a second lens for the reflected radar signals. The second lens is arranged substantially directly adjacent to the first lens in a direction of a length extension in a top view. The first lens and the second lens are designed so that a ratio between the length extension and a width extension of the first directivity of the radar signals or a second directivity of the radar signals is influenceable, i.e., the radar signals with the first directivity are convertible into radar signals with the second directivity.

Abstract: In the global protection of objects structured with electronic components, security devices, e.g., in a vehicle, become active by at least one component, and/or information within at least one component that is essential for operation of the vehicle is deactivated irreversibly and or erased, so that even a disassembly or bridging of the component concerned can achieve no effect, since acquisition of a functional replacement part is not available. The components can, for example, be placed in the motor electronics, the steering column lock, the door lock, and/or the key, and through miniaturization of the receiver, any electronic device can be protected including, among other things, radio telephones, (Euro-)checkcards and cash cards, credit cards, telephone cards, keys to electronic systems, mobile electronic devices, such as cassette recorder, CD players, clocks, computers, etc.

Abstract: A satellite provides a time signal that is adjusted for position of a receiver on the surface of the Earth. A receiver determines appropriate local time from the time signal, and can adjust a local clock accordingly, the satellite time signal in the form of a rotating beam containing angular information to determine the position of the satellite transmitter for proper synchronization. A fixed receiver can also measure the radiation angle of the transmitted beam.