ANTENNA SYSTEM AND ANTENNA AMPLIFIER

摘要

PROBLEM TO BE SOLVED: To suppress deterioration in performance of an antenna even when a conductive film is formed on a window glass provided with the antenna.SOLUTION: An antenna system includes an antenna provided on a glass window of a vehicle and an impedance matching circuit for performing impedance matching with the antenna. An input impedance of about 80 to about 120 &OHgr; is set in the impedance matching circuit.