Back to results
US 6,724,269 B2Granted
PSK transmitter and correlator receiver for UWB communications system
AssigneeCellonics Incorporated Pte, Ltd.
InventorJurianto Joe
Life of this patent
Estimating the term…
Abstract
A circuit to generate antipodal PSK signal and a correlator circuit for recovering information from PSK (phase shift keying) UWB transmissions includes providing a circuit component characterized by a transfer function having alternating stable and unstable regions. By setting the operating point in a stable region or an unstable region, a non-oscillatory or an oscillatory output signal can be produced.
Claims26
An ultra wideband (UWB) communication system comprising:
- an input terminal for receiving a digital signal to be transmitted as a UWB signal;
- an antipodal signal generator comprising a first circuit portion having a transfer function characterized by having an unstable operating region bounded by two stable operating regions, the circuit portion producing a first oscillatory signal when being operated in the unstable region, the circuit portion producing a non-oscillatory signal when being operated in the stable region, the antipodal signal generator further comprising a second circuit portion to effect production of a second oscillatory signal that is substantially 180° out-of-phase relative to the first oscillatory signal;
- and
- an output terminal for producing an antipodal signal comprising first and second oscillatory signals separated by periods of silence, wherein the antipodal signal is suitable for UWB transmission.
1 more element
A signal processing method in a UWB (ultra-wideband) communication system comprising:
- receiving a digital signal for transmission;
- producing an antipodal signal representative of the digital signal, the antipodal signal comprising first oscillatory signal components and second oscillatory signal components substantially 180° out of phase relative to the first oscillatory components;
- and
- transmitting the antipodal signal,
- the step of producing the antipodal signal including operating a circuit characterized by a transfer function having an unstable operating region bounded by a first stable operating region and a second stable operating region to produce an oscillatory output signal, the first and second oscillatory signal components being based on the oscillatory output signal.
2 more elements
A signal processing method in a UWB (ultra wideband) communication system comprising:
- receiving a transmitted signal to produce a received signal, the transmitted signal representative of a digital signal;
- providing an oscillatory signal;
- and
- mixing the received signal with the oscillatory signal to produce an output signal representative of the digital signal,
- wherein providing the oscillatory signal includes driving a first circuit so that it operates repeatedly in a first stable region of operation and then in an unstable region of operation and then in a second stable region of operation and then in the unstable region and then in the first stable region.
2 more elements
A UWB (ultra wideband) system comprising:
- a receiver configured to detect a transmitted signal, the receiver having a receiver output to produce a received signal representative of the detected transmitted signal;
- a signal generator having a signal output;
- and
- mixer having a first input coupled to the receiver output and a second input coupled to the signal output, the mixer having a mixer output to produce a signal representative of data contained in the transmitted signal,
- the signal generator including a first circuit characterized by having an unstable region of operation bounded by first and second stable regions of operation, the signal output being based on an output of the first circuit.
2 more elements
A UWB (ultra-wideband) communication system comprising:
- means for receiving a transmitted signal to produce a received signal, the transmitted signal representative of a digital signal;
- first circuit means for producing oscillatory signals, the first circuit means characterized by a transfer function having an unstable region of operation bounded by a first region of stable operation and a second region of stable operation;
- a drive source coupled to drive the first circuit means to produce oscillatory signals;
- and
- a mixer having a first input coupled to receive the oscillatory signals from the first circuit means, having a second input coupled to receive the received signal, and having an output representative of the digital signal.
2 more elements
Dependencies are inferred from the claim text.