ANTENNA SYSTEM, COMMUNICATION EQUIPMENT SYSTEM AND DIGITAL TELEVISION BROADCAST RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide an antenna system and a communication equipment system that are realized at a low cost where the reception sensitivity is enhanced and the transmission loss can be reduced. SOLUTION: The antenna system is provided with a conductor earth plate 151, a reception element 152 that is placed close to the conductor earth plate 151, and a transmission element 153 placed close to the reception element 152 and having a transmission terminal. One terminal of the reception element 152 and one terminal of the transmission terminal connect in common to the conductor earth plate 151 that connects to ground. A different frequency band is applied between the reception element 152 and the transmission element 153.