Method and Apparatus Adapted to Transmit Data
First Claim
1. A method of configuring a transmitter in order to transmit a Phase Jitter Modulated (PJM) signal, the method comprising the step of:
- adjusting, over a predetermined period of time, a centre frequency of the transmitter to substantially match, within predetermined limits, an instantaneous frequency of the phase jitter modulated signal.
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0 Petitions
Accused Products
Abstract
The present invention relates to the field of data transmission. The invention has application to amplifiers, the transmission of data modulated signals, filters and/or matching circuits connected between an amplifier and a load, radio transmitters, the transmission of data modulated radio signals, filters and/or matching circuits used between a transmitter'"'"'s power amplifier and an antenna and the field of Radio Frequency Identification (RFID), such as in the transmission of data between a tag and an interrogator. The present invention enables the transmission of phase modulated signals, by adjusting a device'"'"'s tuning to substantially match the instantaneous frequency of the phase modulated signal.
48 Citations
33 Claims
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1. A method of configuring a transmitter in order to transmit a Phase Jitter Modulated (PJM) signal, the method comprising the step of:
adjusting, over a predetermined period of time, a centre frequency of the transmitter to substantially match, within predetermined limits, an instantaneous frequency of the phase jitter modulated signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device adapted to transmit phase modulated signals, the device comprising:
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a variable tuning circuit coupled to a tuned circuit; and wherein the variable tuning circuit serves to adjust the circuits'"'"' tuning to substantially match an instantaneous frequency of the phase modulated signal. - View Dependent Claims (8, 9, 10, 30, 31)
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11. A method of configuring a tuned circuit to enable a transmission of Phase Jitter Modulated (PJM) signals, the method comprising:
shifting an impedance of a matching circuit connected to a tuned circuit in a manner representative of a data signal to be transmitted.
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12. A device adapted to transmit or receive Phase Jitter Modulation (PJM) signals, the device adapted to configure a transmitter in order to transmit or receive the Phase Jitter Modulation (PJM) signals by adjusting, over a predetermined period of time, a centre frequency of the transmitter to substantially match, within predetermined limits, an instantaneous frequency of the phase jitter modulation signals.
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13. A device adapted to transmit Phase Jitter Modulation (PJM) signals, the device comprising:
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a tuned circuit adapted to operate at a resonant frequency Fo; a first switch associated with a first element of the tuned circuit and being adapted to enable the tuned circuit to operate at a resonant frequency Fo−
Δ
Fo; anda second switch associated with a second element of the tuned circuit and being adapted to enable the tuned circuit to operate at a resonant frequency Fo+Δ
Fo. - View Dependent Claims (14, 15, 16, 17, 18, 19, 32, 33)
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20. A method of creating a Phase Jitter Modulated signal for transmission, the method comprising:
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providing a tuned circuit having a resonant frequency Fo; providing, in association with the tuned circuit, a first switch associated with a first element; providing, in association with the tuned circuit, a second switch associated with a second element; and in operation, opening and/or closing the first and/or the second switches to enable the tuned circuit to operate at a resonant frequency between Fo+Δ
Fo and Fo−
Δ
Fo. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A method of configuring a tuned circuit to enable transmission of Phase Jitter Modulation (PJM) signals, the method comprising:
shifting a resonant frequency of the tuned circuit in a manner representative of a data signal to be transmitted.
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27. An apparatus adapted to provide a Phase Jitter Modulation (PJM) transmission signal, said apparatus including:
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processor means adapted to operate in accordance with a predetermined instruction set;
said apparatus, in conjunction with said instruction set, being adapted to perform a method of configuring a transmitter in order to transmit the Phase Jitter Modulation (PJM) transmission signal, the method comprising;adjusting, over a predetermined period of time, a centre frequency of the transmitter to substantially match, within predetermined limits, an instantaneous frequency of the phase jitter modulation signal.
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28-29. -29. (canceled)
Specification