| 摘要 |
<p>Apparatus and methods are also disclosed related to tuning a quality factor of an LC circuit and/or tuning a resonant frequency of an LC circuit. In some implementations, the LC circuit can be embodied in a low-noise amplifier (LNA). A quality factor adjustment circuit can increase and/or decrease conductance across the LC circuit. This can stabilize a parasitic resistance in parallel with the LC circuit. In this way, a gain of the LC circuit can be stabilized. In some implementations, the LC circuit can be embodied in an LNA of a receiver. The receiver can include a component configured to generate an indicator of received signal strength indication (RSSI) of a radio frequency (RF) signal received by the receiver. A control block can adjust the resonant frequency of the LC circuit based at least in part on the indicator of RSSI. As another example, the receiver can include an oscillator, such as a VCO, separate from the LC circuit that can be used to tune the resonant frequency of the LC circuit. These apparatus can, for example, compensate for variation in a zero imaginary component of an impedance across the LC circuit.</p> |
