Quadrature oscillator
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMohammed Abdulaziz, Henrik Sjöland
Life of this patent
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Abstract
A quadrature oscillator according to the embodiments herein comprising two pairs of main transistors, two pairs of resonators and two pairs of injection transistors. The quadrature oscillator is split into two halves, which are separated in the chip layout. That is the two pairs of resonators are separated from each other, and the two pairs of the main transistors are separated from the resonator they coupled to such that the quadrature oscillator is separated into two spaced apart oscillator halves connected by transmission lines.
Claims16
A quadrature oscillator for generating a first set of differential quadrature signals and a second set of differential quadrature signals, the quadrature oscillator comprising:
- a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth transistor;
- and
- a first, a second, a third, and a fourth resonator;
- and wherein
- gate terminals of the first transistor and the eighth transistor are connected to each other;
- gate terminals of the second transistor and the seventh transistor are connected to each other;
- gate terminals of the third transistor and the fifth transistor are connected to each other;
- gate terminals of the fourth transistor and the sixth transistor are connected to each other;
- a drain terminal of the fifth transistor is connected to a first terminal of the first resonator;
- a drain terminal of the sixth transistor is connected to a first terminal of the second resonator;
- a drain terminal of the seventh transistor is connected to a first terminal of the third resonator;
- a drain terminal of the eighth transistor is connected to a first terminal of the fourth resonator;
- a drain terminal of the first transistor is connected to the first terminal of the first resonator through a first transmission line;
- a drain terminal of the second transistor is connected to the first terminal of the second resonator through a second transmission line;
- a drain terminal of the third transistor is connected to the first terminal of the third resonator through a third transmission line;
- a drain terminal of the fourth transistor is connected to the first terminal of the fourth resonator through a fourth transmission line;
- the gate terminal of the fifth transistor is connected to the first terminal of the fourth resonator through a fifth transmission line;
- the gate terminal of the sixth transistor is connected to the first terminal of the third resonator through a sixth transmission line;
- the gate terminal of the seventh transistor is connected to the first terminal of the first resonator through a seventh transmission line;
- and
- the gate terminal of the eighth transistor is connected to the first terminal of the second resonator through an eighth transmission line.
An integrated circuit comprising:
- a quadrature oscillator for generating a first set of differential of quadrature signals and a second set of differential quadrature signals, the quadrature oscillator comprising:
- a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth transistor;
- and
- a first, a second, a third, and a fourth resonator;
- and wherein
- gate terminals of the first transistor and the eighth transistor are connected to each other;
- gate terminals of the second transistor and the seventh transistor are connected to each other;
- gate terminals of the third transistor and the fifth transistor are connected to each other;
- gate terminals of the fourth transistor and the sixth transistor are connected to each other;
- a drain terminal of the fifth transistor is connected to a first terminal of the first resonator;
- a drain terminal of the sixth transistor is connected to a first terminal of the second resonator;
- a drain terminal of the seventh transistor is connected to a first terminal of the third resonator;
- a drain terminal of the eighth transistor is connected to a first terminal of the fourth resonator;
- a drain terminal of the first transistor is connected to the first terminal of the first resonator through a first transmission line;
- a drain terminal of the second transistor is connected to the first terminal of the second resonator through a second transmission line;
- a drain terminal of the third transistor is connected to the first terminal of the third resonator through a third transmission line;
- a drain terminal of the fourth transistor is connected to the first terminal of the fourth resonator through a fourth transmission line;
- the gate terminal of the fifth transistor is connected to the first terminal of the fourth resonator through a fifth transmission line;
- the gate terminal of the sixth transistor is connected to the first terminal of the third resonator through a sixth transmission line;
- the gate terminal of the seventh transistor is connected to the first terminal of the first resonator through a seventh transmission line;
- and
- the gate terminal of the eighth transistor is connected to the first terminal of the second resonator through an eighth transmission line;
- wherein the quadrature oscillator is integrated on a portion of a chip, and wherein components of the quadrature oscillator are arranged and separated into two sections, a first section and a second section, on the portion of the chip, and wherein:
- the first and the second resonator and the third, the fourth, the fifth, and the sixth transistor are located in the first section;
- and
- the third and the fourth resonator and the first, the second, the seventh, and the eighth transistor are located in the second section;
- and wherein:
- the first set of differential quadrature signals is provided from one side of the quadrature oscillator located in the first section;
- and
- the second set of differential quadrature signals is provided from the other side of the quadrature oscillator located in the second section.
A transceiver comprising:
- a quadrature oscillator for generating a first set of differential quadrature signals and a second set of differential quadrature signals, the quadrature oscillator comprising:
- a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth transistor;
- and
- a first, a second, a third, and a fourth resonator;
- and wherein:
- gate terminals of the first transistor and the eighth transistor are connected to each other;
- gate terminals of the second transistor and the seventh transistor are connected to each other;
- gate terminals of the third transistor and the fifth transistor are connected to each other;
- gate terminals of the fourth transistor and the sixth transistor are connected to each other;
- a drain terminal of the fifth transistor is connected to a first terminal of the first resonator;
- a drain terminal of the sixth transistor is connected to a first terminal of the second resonator;
- a drain terminal of the seventh transistor is connected to a first terminal of the third resonator;
- a drain terminal of the eighth transistor is connected to a first terminal of the fourth resonator;
- a drain terminal of the first transistor is connected to the first terminal of the first resonator through a first transmission line;
- a drain terminal of the second transistor is connected to the first terminal of the second resonator through a second transmission line;
- a drain terminal of the third transistor is connected to the first terminal of the third resonator through a third transmission line;
- a drain terminal of the fourth transistor is connected to the first terminal of the fourth resonator through a fourth transmission line;
- the gate terminal of the fifth transistor is connected to the first terminal of the fourth resonator through a fifth transmission line;
- the gate terminal of the sixth transistor is connected to the first terminal of the third resonator through a sixth transmission line;
- the gate terminal of the seventh transistor is connected to the first terminal of the first resonator through a seventh transmission line;
- and
- the gate terminal of the eighth transistor is connected to the first terminal of the second resonator through an eighth transmission line.
An electronic device comprising:
- a quadrature oscillator for generating a first set of differential quadrature signals and a second set of differential quadrature signals, the quadrature oscillator comprising:
- a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth transistor;
- and
- a first, a second, a third, and a fourth resonator;
- and wherein:
- gate terminals of the first transistor and the eighth transistor are connected to each other;
- gate terminals of the second transistor and the seventh transistor are connected to each other;
- gate terminals of the third transistor and the fifth transistor are connected to each other;
- gate terminals of the fourth transistor and the sixth transistor are connected to each other;
- a drain terminal of the fifth transistor is connected to a first terminal of the first resonator;
- a drain terminal of the sixth transistor is connected to a first terminal of the second resonator;
- a drain terminal of the seventh transistor is connected to a first terminal of the third resonator;
- a drain terminal of the eighth transistor is connected to a first terminal of the fourth resonator;
- a drain terminal of the first transistor is connected to the first terminal of the first resonator through a first transmission line;
- a drain terminal of the second transistor is connected to the first terminal of the second resonator through a second transmission line;
- a drain terminal of the third transistor is connected to the first terminal of the third resonator through a third transmission line;
- a drain terminal of the fourth transistor is connected to the first terminal of the fourth resonator through a fourth transmission line;
- the gate terminal of the fifth transistor is connected to the first terminal of the fourth resonator through a fifth transmission line;
- the gate terminal of the sixth transistor is connected to the first terminal of the third resonator through a sixth transmission line;
- the gate terminal of the seventh transistor is connected to the first terminal of the first resonator through a seventh transmission line;
- and
- the gate terminal of the eighth transistor is connected to the first terminal of the second resonator through an eighth transmission line.
Dependencies are inferred from the claim text.