| 摘要 |
<p>The circuit has a series connection comprising a bulk acoustic resonator (BAW) type acoustic resonator (120), with resonant and anti-resonant frequencies, series mounted with a capacitor (110). A parallel connection has a BAW type acoustic resonator (130) resulting from the same fabrication process as that of the resonator (120), and parallel mounted with a capacitor (140) of value identical to the capacitor (110). The capacitors are formed of passive type components, and the resonators are identical. Independent claims are also included for the following: (1) a mobile telephone comprising a filtering circuit (2) a receiver of a wireless communication system, comprising a filtering circuit.</p> |
