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US 8,803,614 B2Granted
Current reuse electronic device based on magnetic coupling components
AssigneeSTMicroelectronics S.r.l.
InventorsVittorio Giammello, Egidio Ragonese, Giuseppe Palmisano
Life of this patent
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Abstract
A current reuse device including a first stage provided with a first input for a first input signal and a first output for a first output signal; a second stage comprising a second input for a second input signal and a direct current terminal operating as a ground terminal for alternate signals; a first inductor connected to a first output and to the direct current terminal so that the first and second stages share a direct current; a second inductor reciprocally coupled to the first inductor and connected to the second input in order to generate the second input signal as a function of the first output signal.
Claims27
Electronic device comprising:
- a first stage provided with a first input for a first input signal, and a first output for a first output signal;
- a second stage comprising a second input for a second input signal, a direct current terminal operating as a ground terminal for alternating current signals, and a second output for a second output signal;
- a first inductor connected to the first output and the direct current terminal so that the first and second stages share a direct current;
- and
- a second inductor mutually coupled to the first inductor and connected to the second input in order to output the second input signal as a function of the first output signal, wherein at least the first stage has a differential configuration, and wherein:
- the first output comprises a pair of output terminals;
- the first inductor is connected across the output terminals pair and is provided with a central symmetry point acting as a virtual ground terminal for the alternating current signals;
- and
- the direct current terminal is connected to the virtual ground terminal.
6 more elements
Electronic device comprising:
- a first stage provided with a first input for a first input signal, and a first output for a first output signal;
- a second stage comprising a second input for a second input signal, a direct current terminal operating as a ground terminal for alternating current signals, and a second output for a second output signal;
- a first inductor connected to the first output and the direct current terminal so that the first and second stages share a direct current;
- and
- a second inductor mutually coupled to the first inductor and connected to the second input in order to output the second input signal as a function of the first output signal, wherein the first and second stages and the first and second inductors are sized for operating on said first input signal at radiofrequencies or at the frequencies of millimeter waves, wherein said device is a wireless signal transmitter, and wherein the first stage comprises a voltage-controlled oscillator and the second stage comprises a power amplifier.
2 more elements
Electronic device comprising:
- a first stage provided with a first input for a first input signal, and a first output for a first output signal;
- a second stage comprising a second input for a second input signal, a direct current terminal operating as a ground terminal for alternating current signals, and a second output for a second output signal;
- a first inductor connected to the first output and the direct current terminal so that the first and second stages share a direct current;
- a second inductor mutually coupled to the first inductor and connected to the second input in order to output the second input signal as a function of the first output signal;
- at least a third stage comprising a third input for a third input signal and a further direct current terminal operating as a ground terminal for alternating current signals;
- a third inductor connected to the second output and to the further direct current terminal so that the second stage and the at least one third stage share the direct current;
- and
- a fourth inductor mutually coupled to the third inductor and connected to the third input in order to output the third input signal as a function of the second output signal.
5 more elements
An electronic circuit comprising:
- a first stage including a first input and a first output;
- a second stage including a second input, a direct current terminal operating as a ground terminal for alternating current signals, and a second output;
- a first inductor connected between the first output and the direct current terminal so that the first and second stages share a direct current;
- and
- a second inductor magnetically coupled to the first inductor and connected to the second input, wherein the first stage and/or the second stage has a differential configuration.
2 more elements
Dependencies are inferred from the claim text.