Passive amplification of signals
First Claim
1. A method, comprising:
- receiving an input signal voltage into a first input port and a second input port of a balanced input port;
connecting, in a first stage, in response to a first oscillator signal, a first terminal of a first capacitance to the first input port, a second terminal of the first capacitance to the second input port, a first terminal of a second capacitance to the first input port, and a second terminal of the second capacitance to the second input port;
connecting, in a second stage, in response to a second oscillator signal, the first terminal of the first capacitance to a first terminal of a third capacitance, the second terminal of the first capacitance to the first input port, the first terminal of the second capacitance to the second input port, and the second terminal of the second capacitance to a second terminal of the third capacitance; and
obtaining a voltage over the third capacitance as an output voltage.
6 Assignments
0 Petitions
Accused Products
Abstract
A passive amplifier structure capable of multiplying the voltage of an input signal is provided. In a first stage, a first and a second capacitance are connected between a first and a second input port of a balanced input port in response to a first oscillator signal. In a second stage, in response to a second oscillator signal having a phase different from that of the first oscillator signal, the first capacitance is connected between the first input port and a third capacitance and the second capacitance is connected between the second input port and the third capacitance. An output voltage over the third capacitance is obtained from terminals of the third capacitance. Presented embodiments also describe an automatic gain control feature.
-
Citations
33 Claims
-
1. A method, comprising:
-
receiving an input signal voltage into a first input port and a second input port of a balanced input port; connecting, in a first stage, in response to a first oscillator signal, a first terminal of a first capacitance to the first input port, a second terminal of the first capacitance to the second input port, a first terminal of a second capacitance to the first input port, and a second terminal of the second capacitance to the second input port; connecting, in a second stage, in response to a second oscillator signal, the first terminal of the first capacitance to a first terminal of a third capacitance, the second terminal of the first capacitance to the first input port, the first terminal of the second capacitance to the second input port, and the second terminal of the second capacitance to a second terminal of the third capacitance; and obtaining a voltage over the third capacitance as an output voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An apparatus, comprising:
-
an input interface comprising a balanced input port configured to receive a balanced input signal and an oscillator signal input port configured to receive a first oscillator signal and a second oscillator signal; a first capacitance; a second capacitance; a third capacitance; a first set of switches responsive to the first oscillator signal and configured to connect, when closed in response to the first oscillator signal, the first and the second capacitance between a first input port and a second input port of the balanced input port, wherein the first set of switches is configured to connect, when closed, a first terminal of the first capacitance and a first terminal of the second capacitance to the first input port and a second terminal of the first capacitance and a second terminal the second capacitance to the second input port; a second set of switches responsive to the second oscillator signal and configured to connect, when closed in response to the second oscillator signal, the first capacitance between the first input port and the third capacitance, and the second capacitance between the second input port and the third capacitance, wherein the second set of switches is configured to connect, when closed, the first terminal of the first capacitance to a first terminal of the third capacitance, the second terminal of the first capacitance to the first input port, the first terminal of the second capacitance to the second input port, and the second terminal of the second capacitance to a second terminal of the third capacitance; and an output port connected to terminals of the third capacitance. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. An automatic gain control amplifier, comprising:
-
an input interface comprising a balanced input port configured to receive a balanced input signal and an oscillator signal input port configured to receive a first oscillator signal and a second oscillator signal; a first capacitance; a second capacitance; a third capacitance; a first set of switches responsive to the first oscillator signal and configured to connect, when closed in response to the first oscillator signal, the first and the second capacitance between a first input port and a second input port of the balanced input port, wherein the first set of switches is configured to connect, when closed, a first terminal of the first capacitance and a first terminal of the second capacitance to the first input port and a second terminal of the first capacitance and a second terminal the second capacitance to the second input port; a second set of switches responsive to the second oscillator signal and configured to connect, when closed in response to the second oscillator signal, the first capacitance between the first input port and the third capacitance, and the second capacitance between the second input port and the third capacitance, wherein the second set of switches is configured to connect, when closed, the first terminal of the first capacitance to a first terminal of the third capacitance, the second terminal of the first capacitance to the first input port, the first terminal of the second capacitance to the second input port, and the second terminal of the second capacitance to a second terminal of the third capacitance; and an output port connected to terminals of the third capacitance.
-
-
32. A radio transmitter comprising an amplifier, comprising:
-
an input interface comprising a balanced input port configured to receive a balanced input signal and an oscillator signal input port configured to receive a first oscillator signal and a second oscillator signal; a first capacitance; a second capacitance; a third capacitance; a first set of switches responsive to the first oscillator signal and configured to connect, when closed in response to the first oscillator signal, the first and the second capacitance between a first input port and a second input port of the balanced input port, wherein the first set of switches is configured to connect, when closed, a first terminal of the first capacitance and a first terminal of the second capacitance to the first input port and a second terminal of the first capacitance and a second terminal the second capacitance to the second input port; a second set of switches responsive to the second oscillator signal and configured to connect, when closed in response to the second oscillator signal, the first capacitance between the first input port and the third capacitance, and the second capacitance between the second input port and the third capacitance, wherein the second set of switches is configured to connect, when closed, the first terminal of the first capacitance to a first terminal of the third capacitance, the second terminal of the first capacitance to the first input port, the first terminal of the second capacitance to the second input port, and the second terminal of the second capacitance to a second terminal of the third capacitance; and an output port connected to terminals of the third capacitance.
-
-
33. An apparatus, comprising:
-
input means comprising a balanced input port for receiving a balanced input signal and an oscillator signal input port for receiving a first and a second oscillator signal; first capacitance means for holding charge; second capacitance means for holding charge; third capacitance means for holding charge; first switching means responsive to the first oscillator signal for connecting, when closed in response to the first oscillator signal, the first capacitance means and the second capacitance means between a first input port and a second input port of the balanced input port, wherein the first switching means connect, when closed, a first terminal of the first capacitance and a first terminal of the second capacitance to the first input port and a second terminal of the first capacitance and a second terminal the second capacitance to the second input port; second switching means responsive to the second oscillator signal for connecting, when closed in response to the second oscillator signal, the first capacitance means between the first input port and the third capacitance means and the second capacitance means between the second input port and the third capacitance means, wherein the second switching means connect, when closed, the first terminal of the first capacitance to a first terminal of the third capacitance, the second terminal of the first capacitance to the first input port, the first terminal of the second capacitance to the second input port, and the second terminal of the second capacitance to a second terminal of the third capacitance; and output means connected to terminals of the third capacitance means.
-
Specification