| 摘要 |
<p>Resonator comprising first and second balanced integrators (I1, I2) each composed with a balanced amplifier and having a non-inverting (in+) and an inverting (in-) input terminal, as well as a non-inverting (out+) and an inverting (out-) output terminal. First and second coupling circuits (Y1, Y2) are interconnected between the non-inverting output terminal (out+) of the first integrator (I1) and the non-inverting input terminal (in+) of the second integrator (I2) and between the inverting output terminal (out-) of the first integrator (I1) and the inverting input terminal (in-) of the second integrator (I2) respectively. Feedback circuits (Y3, Y4) are interconnected between the non-inverting output terminal (out+) of the second integrator (I2) and the inverting input terminal (in-) of the first integrator (I1) and between the inverting output terminal (out-) of the second integrator (I2) and the non-inverting input terminal (in+) of the first integrator (I1) respectively. The balanced integrators (I1, I2) are constituted by two semiconductor elements (T1, T2) interconnected as a differential amplifier, in which a feedback capacitor (C1, C2) is directly connected between the output terminal (out+, out-) and the input terminal (in+, in-) of each semiconductor element (T1, T2). At least one of the coupling and feedback circuits (Y1, Y2, Y3, Y4) comprises a series connection of a high - to - low impedance converter (T3) and a conductance (G).</p> |
