TERRESTRIAL BROADCAST WAVE RECEPTION-USE ANTENNA DEVICE AND COMPONENT OF SAME

摘要

[Problem] To provide a terrestrial broadcast wave reception-use antenna device which has performance that is equivalent to or better than the prior art in frequency bands at or below the FM band even if the antenna element length is shortened to approximately 55 [mm]. [Solution] An amplifier (12-A) is configured so as to include a compound semiconductor HEMT which amplifies received waves of a frequency that are at or below a resonant point of an antenna element (10) among received waves of the antenna element (10) and for which the equivalent noise resistance with respect to the received frequency is at or below 2O so that the noise figure (NF) is approximately constant over a wide frequency band at or below the FM band.