Patent ID: 9054670
Filing Date: 2015-06-09
Classification: H01P,H03H

Abstract:
1. A cross-coupled bandpass filter, comprising: a second resonator comprised of a second inductor, an interconnecting inductor and a second capacitor, and having a second opening defined by a gap between two terminals of the second inductor, wherein the two terminals of the second inductor are electrically connected to each other through the interconnecting inductor, and the second capacitor is disposed on and electrically connected to a middle portion of the second inductor and further electrically connected to the two terminals of the second inductor through the interconnecting inductor in a symmetrical manner; a first resonator comprised of a first inductor and a first capacitor and having a first opening defined by two terminals of the first inductor, wherein the two terminals of the first inductor are electrically connected to each other through the first capacitor; and a third resonator comprised of a third inductor and a third capacitor and having a third opening defined by two terminals of the third inductor, wherein the two terminals of the third inductor are electrically connected to each other through the third capacitor, wherein portions of the first and third resonators are symmetrically disposed inside the second opening of the second resonator.