Oscillator, transmitter provided with such an oscillator, and use of such a transmitter
AssigneeTelefonaktiebolaget LM Ericsson
InventorsMarcel Wilhelm R. M van Roosmalen, Berend Hendrik Essink, Christian Alexander Smit
Life of this patent
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Abstract
An oscillator has a resonator which includes at least one capacitor and at least one inductor. The resonator supplies a first signal of a first frequency at an output of the resonator. A frequency multiplier or a frequency divider is connected, via an input thereof, to the resonator output. The frequency multiplier or frequency divider supplies a second signal of a second frequency at an output of the frequency multiplier or frequency divider. The second frequency is n times or 1/n times (n≧2 and integer) the first frequency. A tuned circuit is part of the resonator and forms a short circuit or an open connection for the second frequency.
Claims30
An oscillator, comprising:
- a resonator which includes at least one capacitor and at least one inductor, said resonator being designed to supply a first signal of a first frequency at an output of the resonator;
- and
- a frequency multiplier having an input which is connected to the resonator output, said frequency multiplier being designed to supply a second signal of a second frequency at an output of the frequency multiplier, the second frequency being n times (n≧2 and integer) the first frequency,
- the oscillator further comprising a tuned circuit which is part of the resonator and which forms a short circuit or an open connection for the second frequency.
An oscillator, comprising:
- a resonator which includes at least one capacitor and at least one inductor, said resonator being designed to supply a first signal of a first frequency to an output of the resonator;
- and
- a frequency divider having an input which is connected to the resonator output, said frequency divider being designed to supply a second signal of a second frequency at an output of the frequency divider, the second frequency being 1/n times (n≧2 and integer) the first frequency,
- the oscillator further comprising a tuned circuit which is part of the resonator and which forms a short circuit or an open connection for the second frequency.
A transmitter provided with an oscillator, the oscillator comprising:
- a resonator which includes at least one capacitor and at least one inductor, said resonator being designed to supply a first signal of a first frequency at an output of the resonator;
- and
- a frequency multiplier having an input which is connected to the resonator output, said frequency multiplier being designed to supply a second signal of a second frequency at an output of the frequency multiplier, the second frequency being n times (n≧2 and integer) the first frequency,
- the oscillator further comprising a tuned circuit which is part of the resonator and which forms a short circuit or an open connection for the second frequency.
A transmitter provided with an oscillator, the oscillator comprising:
- a resonator which includes at least one capacitor and at least one inductor, said resonator being designed to supply a first signal of a first frequency to an output of the resonator;
- and
- a frequency divider having an input which is connected to the resonator output, said frequency divider being designed to supply a second signal of a second frequency at an output of the frequency divider, the second frequency being 1/n times (n≧2 and integer) the first frequency,
- the oscillator further comprising a tuned circuit which is part of the resonator and which forms a short circuit or an open connection for the second frequency.
In a communications system, a use of a transmitter provided with an oscillator, the oscillator comprising:
- a resonator which includes at least one capacitor and at least one inductor, said resonator being designed to supply a first signal of a first frequency at an output of the resonator;
- and
- a frequency multiplier having an input which is connected to the resonator output, said frequency multiplier being designed to supply a second signal of a second frequency at an output of the frequency multiplier, the second frequency being n times (n≧2 and integer) the first frequency,
- the oscillator further comprising a tuned circuit which is part of the resonator and which forms a short circuit or an open connection for the second frequency,
- the communications system being selected from a group of communications systems comprising a GSM communications system, a DECT communications system and a Bluetooth® communications system.
In a communications system, a use of a transmitter provided with an oscillator, the oscillator comprising:
- a resonator which includes at least one capacitor and at least one inductor, said resonator being designed to supply a first signal of a first frequency to an output of the resonator;
- and
- a frequency divider having an input which is connected to the resonator output, said frequency divider being designed to supply a second signal of a second frequency at an output of the frequency divider, the second frequency being 1/n times (n≧2 and integer) the first frequency,
- the oscillator further comprising a tuned circuit which is part of the resonator and which forms a short circuit or an open connection for the second frequency,
- the communications system being selected from a group of communications systems comprising a GSM communications system, a DECT communications system and a Bluetooth® communications system.
Dependencies are inferred from the claim text.