US 6,725,030 B2Granted

CMOS radio frequency amplifier with inverter driver

AssigneeKoninklijke Philips Electronics N.V.

InventorVickram Vathulya

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Abstract

A MOSFET amplifier includes a pre-amplifier stage and a power amplifier stage. The pre-amplifier is a CMOS inverter having a signal output that is DC connected to the gate of a MOS control transistor of the power amplifier stage. The CMOS inverter includes an NMOS transistor with a source connected through an inductor to ground and a drain to the source of a PMOS transistor. The drain of the PMOS transistor is connected through another inductor to a supply voltage. The gates of the NMOS and PMOS transistors are connected to both receive an input signal of the amplifier.

Claims14

Dependent claims

An integrated circuit chip having an amplifier comprising:

a signal input for receiving a radio frequency input signal;
a first transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the first transistor, the control terminal communicating with the signal input;
a second transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the second transistor, the control terminal to communicating with the signal input, the second terminal of the second transistor communicating with the first terminal of the first transistor;
first pull-down connected between the first terminal of the second transistor and ground for reducing the current between the first terminal of the first transistor and ground when the first transistor is closed;
first pull-up means connected between the second terminal of the first transistor and a first reference voltage for reducing the current between the second terminal of the second resistor and the first reference voltage when the first transistor is closed;
a third transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the third transistor;
connection means for conducting AC and DC current between the first terminal of the first transistor, the second terminal of the second transistor, and the control terminal of the third transistor;
second pull-up means connected between the first terminal of the third transistor and ground for reducing the current between the first terminal of the third transistor and ground when the third transistor is closed;
second pull-down means connected between the second terminal of the third transistor and a second reference voltage for reducing the current between the second terminal of the second transistor and the second reference voltage when the third transistor is closed;
and
an output terminal connected to the second terminal of the third transistor for providing an amplified radio frequency output signal depending on the radio frequency input signal.

8 more elements

A circuit board assembly, comprising:

a circuit board having connection pads;
an integrated circuit chip with connection pads and positioned on a surface of the circuit board;
bond wires or flip-chip connections connecting between the connection pads on the integrated circuit chip and the connection pads on the circuit board;
the integrated circuit chip including:
a signal input for receiving a radio frequency input signal;
a first transistor 110 with a control terminal for controlling the connection between a first terminal and a second terminal of the first transistor, the control terminal communicating with the signal input;
a second transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the second transistor, the control terminal communicating with the signal input, the second terminal of the second transistor communicating with the first terminal of the first transistor,
first pull-down means connected between the first terminal of the second transistor and ground for reducing the current between the first terminal of the first transistor and ground when the first transistor is closed;
first pull-up means connected between the second terminal of the first transistor and a first reference voltage for reducing the current between the second terminal of the second resistor and the first reference voltage when the first transistor is closed;
a third transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the third transistor;
connection means for conducting AC and DC current between the first terminal of the first transistor, the second terminal of the second transistor, and the control terminal of the third transistor;
second pull-up means connected between the first terminal of the third transistor and ground for reducing the current between the first terminal of the third transistor and ground when the third transistor is closed;
second pull-down means connected between the second terminal of the third transistor and a second reference voltage for reducing the current between the second terminal of the second transistor and the second reference voltage when the third transistor is closed;
and
an output terminal connected to the second terminal of the third transistor for providing an amplified radio frequency output signal depending on the radio frequency input signal.

12 more elements

A transmitter comprising:

means for providing an input signal;
means for amplifying the input signal;
and
means for transmitting the amplified signal onto a transmission medium;
and in which, the amplifying means includes:
a signal input for receiving a radio frequency input signal;
a first transistor 110 with a control terminal for controlling the connection between a first terminal and a second terminal of the first transistor, the control terminal communicating with the signal input;
a second transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the second transistor, the control terminal communicating with the signal input, the second terminal of the second transistor communicating with the first terminal of the first transistor;
first pull-down means connected between the first terminal of the second transistor and ground for reducing the current between the first terminal of the first transistor and ground when the first transistor is closed;
first pull-up means connected between the second terminal of the first transistor and a first reference voltage for reducing the current between the second terminal of the second resistor and the first reference voltage when the first transistor is closed;
a third transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the third transistor;
connection means for conducting AC and DC current between the first terminal of the first transistor, the second terminal of the second transistor, and the control terminal of the third transistor;
second pull-up means connected between the first terminal of the third transistor and ground for reducing the current between the first terminal of the third transistor and ground when the third transistor is closed;
second pull-down means connected between the second terminal of the third transistor and a second reference voltage for reducing the current between the second terminal of the second transistor and the second reference voltage when the third transistor is closed;
and
an output terminal connected to the second terminal of the third transistor for providing an amplified radio frequency output signal depending on the radio frequency input signal.

13 more elements

Dependencies are inferred from the claim text.

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Abstract

An integrated circuit chip having an amplifier comprising:

a signal input for receiving a radio frequency input signal;
a first transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the first transistor, the control terminal communicating with the signal input;
a second transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the second transistor, the control terminal to communicating with the signal input, the second terminal of the second transistor communicating with the first terminal of the first transistor;
first pull-down connected between the first terminal of the second transistor and ground for reducing the current between the first terminal of the first transistor and ground when the first transistor is closed;
first pull-up means connected between the second terminal of the first transistor and a first reference voltage for reducing the current between the second terminal of the second resistor and the first reference voltage when the first transistor is closed;
a third transistor with a control terminal for controlling the connection between a first terminal and a second terminal of the third transistor;
connection means for conducting AC and DC current between the first terminal of the first transistor, the second terminal of the second transistor, and the control terminal of the third transistor;
second pull-up means connected between the first terminal of the third transistor and ground for reducing the current between the first terminal of the third transistor and ground when the third transistor is closed;
second pull-down means connected between the second terminal of the third transistor and a second reference voltage for reducing the current between the second terminal of the second transistor and the second reference voltage when the third transistor is closed;
and
an output terminal connected to the second terminal of the third transistor for providing an amplified radio frequency output signal depending on the radio frequency input signal.

8 more elements