Vehicle antenna device has electronic unit and planar antenna arranged on common carrier

摘要

Antenna device comprises a planar antenna (1) and a corresponding electronic unit (2), both of which are arranged on a common carrier (3). The electronic unit includes two signal paths and a power detector for detecting the power of an incoming signal. The signal paths are allocated based on the detected power. The first signal path includes a band separator, two transmission/reception amplifiers, and a band combiner.