Oscillation circuit and transmitter including the same
AssigneeElectronics and Telecommunications Research Institute
InventorsHui Dong LEE, Bong Hyuk PARK, Moon-Sik LEE
Life of this patent
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Abstract
Provided is an oscillation circuit including a voltage adjuster adjusting a magnitude of a power supply voltage according to a digital signal, an LC tank circuit connected between first and second nodes and generating a resonance signal on a basis of the magnitude adjusted power supply voltage, and a differential amplification circuit oscillating the resonance signal or modifying an oscillation state of the resonance signal to output first and second output voltage signals to the first and second nodes, respectively.
Claims14
An oscillation circuit comprising:
- a voltage adjuster adjusting a magnitude of a power supply voltage according to a digital signal;
- an LC tank circuit connected between first and second nodes and generating a resonance signal on a basis of the magnitude-adjusted power supply voltage;
- and
- a differential amplification circuit oscillating the resonance signal or modifying an oscillation state of the resonance signal to output first and second output voltage signals to the first and second nodes, respectively.
A transmitter comprising:
- an oscillation circuit comprising a first inductor and a capacitor connected in parallel to first and second nodes to output a resonance signal on a basis of a power supply voltage, a differential amplification circuit oscillating the resonance signal or modifying an oscillation state of the resonance signal according to a first digital signal to output as first and second output voltage signals, and a transformer configured with the first inductor and a second inductor connected in parallel to the first inductor for transforming the first and second output voltage signals into a single oscillation signal;
- and
- an antenna outputting the single oscillation signal.
Dependencies are inferred from the claim text.