Low-cost receiver using integrated inductors
AssigneeSilicon Laboratories Inc.
InventorsMustafa H. Koroglu, Yu Su
Life of this patent
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Abstract
A receiver includes a first amplifier, a first variable capacitor, and an inductance leg. The first amplifier has an input for receiving a radio frequency signal, and an output. The first variable capacitor has a first terminal coupled to the output of the first amplifier, a second terminal coupled to a power supply voltage terminal, and a control terminal for receiving a tuning signal. The inductance leg has a first terminal coupled to the output of the first amplifier, and a second terminal coupled to the power supply voltage terminal. The inductance leg includes a first inductor and has an effective resistance in series with the first inductor, wherein the effective resistance has a value related to an upper frequency threshold to be tuned by the receiver.
Claims12
A receiver comprising:
- a first amplifier having an input for receiving a radio frequency signal, and an output;
- a first variable capacitor having a first terminal coupled to the output of the first amplifier, a second terminal coupled to a power supply voltage terminal, and a control terminal for receiving a tuning signal;
- and
- an inductance leg having a first terminal coupled to the output of the first amplifier, and a second terminal coupled to the power supply voltage terminal, the inductance leg including a first inductor and having an effective resistance in series with the first inductor, wherein the effective resistance has a value related to an upper frequency threshold to be tuned by the receiver.
A receiver comprising:
- a first amplifier having an input for receiving a radio frequency signal, and an output;
- a first variable capacitor having a first terminal coupled to the output of the first amplifier, a second terminal coupled to a power supply voltage terminal, and a control terminal for receiving a tuning signal;
- a resistor having a first terminal coupled to the output of the first amplifier, and a second terminal;
- and
- a first inductor having a first terminal coupled to the second terminal of the resistor and a second terminal coupled to the power supply voltage terminal, wherein a resistance of the resistor plus a parasitic resistance of the first inductor form an effective resistance having a value related to an upper frequency threshold to be tuned by the receiver.
Dependencies are inferred from the claim text.