| 摘要 |
Provided is a receiver capable of automatically controlling a gain of the receiver and receiving three or more band signals. A gain controlled receiver includes a low noise amplifier, a first variable gain control amplifier, a frequency mixer, a filter, a second variable gain control amplifier, and a gain control block. The gain controlled receiver automatically controls gains of the low noise amplifier, the first variable gain control amplifier, the frequency mixer, the filter, the second variable gain control amplifier by detecting strength of the signals processed in the receiver. Therefore, without an additional manual tuning operation, the gain of the receiver can be automatically maintained in an optimal state. A multi-band processing receiver includes a first receiving unit, a second receiving unit, and a switch. The multi-band processing receiver can process three or more RF signals in multi-band by using a single receiver.
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