Tuner with at least a first and a second frequency band

摘要

First (1), second (2) and third (3) frequency bands are wired in parallel and coupled to an aerial (4). These three bands connect up in series tunable input filters (10,20,30), amplifiers (11,21,31), tunable band pass filters (12,22,32), mixers (13,23,33) and tunable oscillators (14,24,34). A receiver signal received by the aerial is fed in parallel to the tunable input filters.