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US 10,536,118 B2Granted
Circuit and a method for operating a circuit
AssigneeIntel IP Corporation
InventorBenjamin Jann
Life of this patent
Estimating the term…
Abstract
A circuit containing a first cascode circuit and a second cascode circuit is proposed. The first circuit and the second cascode circuit are stacked between two power supply terminals. An output signal terminal of the circuit is coupled to a node connecting the first cascode circuit and the second cascode circuit. A first signal path is provided between the first cascode circuit and a common ground terminal and a second signal path is provided between the second cascode circuit and the common ground terminal.
Claims20
A circuit for digital power amplifier (DPA) comprising:
- a first cascode circuit and a second cascode circuit stacked between two power supply terminals, wherein the first cascode circuit is coupled to a first power supply terminal and the second cascode circuit is coupled to a second power supply terminal;
- an output signal terminal coupled to a first node connecting the first cascode circuit and the second cascode circuit;
- a first signal path between the first cascode circuit and a common ground terminal;
- and
- a second signal path between the second cascode circuit and the common ground terminal,
- wherein each cascode circuit comprises at least two transistors,
- wherein the first signal path is coupled to a second node between a first transistor and a second transistor of the first cascode circuit and the second signal path is coupled to a third node between a first transistor and a second transistor of the second cascode circuit, wherein the first transistor of the first cascode circuit and the first transistor of the second cascode circuit are input transistors,
- wherein the circuit for DPA operates either in a switching state where an input signal drives the first and second cascode circuits or in an off state where the input transistors are turned off,
- wherein a low impedance path is formed between the common ground terminal and the output signal terminal in the off state such that a potential at the common ground terminal and a potential at the output signal terminal are substantially same in the off state.
6 more elements
A method for operating a cascode circuit for digital power amplifier (DPA), the method comprising:
- applying a first voltage to a first power supply terminal;
- applying a second voltage to a common ground terminal;
- and
- applying a third voltage to a second power supply terminal, wherein the first, second and third voltages differ from each other,
- wherein the cascode circuit for DPA comprises:
- a first cascode circuit and a second cascode circuit stacked between the first and second power supply terminals, wherein the first cascode circuit is coupled to the first power supply terminal and the second cascode circuit is coupled to the second power supply terminal;
- an output signal terminal coupled to a first node connecting the first cascode circuit and the second cascode circuit;
- a first signal path between the first cascode circuit and the common ground terminal;
- and
- a second signal path between the second cascode circuit and the common ground terminal,
- wherein each cascode circuit comprises at least two transistors,
- wherein the first signal path is coupled to a second node between a first transistor and a second transistor of the first cascode circuit and the second signal path is coupled to a third node between a first transistor and a second transistor of the second cascode circuit, wherein the first transistor of the first cascode circuit and the first transistor of the second cascode circuit are input transistors,
- wherein the cascode circuit for DPA operates either in a switching state where an input signal drives the first and second cascode circuits or in an off state where the input transistors are turned off,
- wherein a low impedance path is formed between the common ground terminal and the output signal terminal in the off state such that a potential at the common ground terminal and a potential at the output signal terminal are substantially same in the off state.
11 more elements
Dependencies are inferred from the claim text.