US 8,576,012 B2 · Single-to-differential conversion circuit

Abstract

A single-to-differential conversion circuit includes a first transistor, a second transistor, and a transforming unit. Each of the first and second transistors has first, second and third terminals. The transforming unit has first, second, and third induction elements. The first induction element has a first inductive terminal coupled to the second terminal of the first transistor, and a second inductive terminal coupled to a voltage source. The second induction element has a first inductive terminal to be coupled to the voltage source, and a second inductive terminal coupled to the second terminal of the second transistor. The third induction element has a first inductive terminal coupled to the first terminals of the first and second transistors, and a second inductive terminal coupled to ground. The third induction element electrically couples to the first and the second induction elements according to first and second coupling parameters, respectively.

Claims15

Dependent claims

A single-to-differential conversion circuit, comprising:

a first transistor, having a third terminal to receive an input signal, a second terminal, and a first terminal;
a second transistor, having a first terminal, a second terminal and a third terminal;
and
a transforming unit, comprising:
a first induction element, having a first inductive terminal coupled to said second terminal of said first transistor, and a second inductive terminal to be coupled to a voltage source;
a second induction element, having a first inductive terminal to be coupled to the voltage source, and a second inductive terminal coupled to said second terminal of said second transistor;
and
a third induction element, having a first inductive terminal coupled to said first terminal of said first transistor and said first terminal of said second transistor, and a second inductive terminal to be coupled to ground;
wherein said first induction element and said third induction element undergo a first electrical coupling according to a first coupling parameter, and said second induction element and said third induction element undergo a second electrical coupling according to a second coupling parameter.

6 more elements

A single-to-differential conversion circuit, comprising:

a first transistor, having a third terminal to receive an input signal, a second terminal, and a first terminal;
a second transistor, having a first terminal, a second terminal, and a third terminal;
and
a transforming unit, comprising:
a first induction element, having a first inductive terminal coupled to said second terminal of said first transistor, and a second inductive terminal to be coupled to a voltage source;
a second induction element, having a first inductive terminal to be coupled to the voltage source, and a second inductive terminal coupled to said second terminal of said second transistor;
and
a third induction element, having a first inductive terminal coupled to said first terminal of said first transistor and said first terminal of said second transistor, and a second inductive terminal to be coupled to ground;
wherein said first induction element and said third induction element undergo a first electrical coupling according to a coupling parameter, and said second induction element and said third induction element undergo a second electrical coupling according to the coupling parameter.

6 more elements

Dependencies are inferred from the claim text.

Single-to-differential conversion circuit

Life of this patent

Single-to-differential conversion circuit

Life of this patent

Abstract

Claims15