Receiver having a gain-controllable stage
AssigneeNXP B.V.
InventorJohannes Hubertus Antonius Brekelmans
Life of this patent
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Abstract
A gain-controllable stage (CLN, A1, A2 . . . , A7, ACC) comprises a reactive signal divider (CLN) followed by an amplifier arrangement (A1, A2 . . . , A7, ACC). The reactive signal divider (CLN) may be in the form of, for example, a capacitive ladder network. The gain-controllable stage (CLN, A1, A2 . . . , A7, ACC) has a gain factor that depends on a signal division factor that the reactive signal divider (CLN) provides. The reactive signal divider (CLN) forms part of a filter (LC). The signal division factor is adjusted on the basis of a frequency (F) to which the receiver is tuned and a signal-strength indication (RS).
Claims10
A receiver comprising:
- a gain-controllable stage that comprises a reactive signal divider followed by an amplifier arrangement, the gain-controllable stage having a gain factor that depends on a signal division ratio of the reactive signal divider;
- a filter, the reactive signal divider forming part of the filter;
- and
- a controller for adjusting the signal division ratio of the reactive signal divider on the basis of a frequency to which the receiver is tuned and a signal-strength indication.
A method of controlling a receiver that comprises:
- a gain-controllable stage that comprises a reactive signal divider followed by an amplifier arrangement the gain-controllable stage having a gain factor that depends on a signal division ratio of the reactive signal divider;
- and
- a filter, the reactive signal divider forming part of the filter;
- the method comprising:
- a noise-and-gain control step in which the signal division ratio of the reactive signal divider is adjusted on the basis of a frequency to which the receiver is tuned and a signal-strength indication.
Dependencies are inferred from the claim text.