Information transmission unit
First Claim
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1. An information transmission unit comprising:
- a signal source;
a channel coupled to the signal source, the channel having a channel cutoff frequency;
a continuous-time linear active filter coupled to the channel to provide equalization over a range of frequencies; and
a sampling unit coupled to the continuous-time linear active filter.
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Abstract
An information transmission unit includes a signal source, a channel having a channel cutoff frequency coupled to the signal source, a continuous-time linear active filter coupled to the channel to provide equalization over a range of frequencies, and a sampling unit coupled to the continuous-time linear active filter. A method includes transmitting a continuous time signal including digital information on a channel, receiving the continuous time signal from the channel and filtering the continuous time signal to form an equalized continuous time signal, and sampling the equalized continuous time signal to recover the digital information.
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Citations
30 Claims
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1. An information transmission unit comprising:
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a signal source;
a channel coupled to the signal source, the channel having a channel cutoff frequency;
a continuous-time linear active filter coupled to the channel to provide equalization over a range of frequencies; and
a sampling unit coupled to the continuous-time linear active filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An information transmission unit comprising:
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a signal source;
a channel coupled to the signal source, the channel having a channel cutoff frequency;
a buffer coupled to the channel;
a continuous-time linear active filter coupled to the buffer to provide magnitude equalization between a range of frequencies above the channel cutoff frequency and a range of frequencies below the channel cutoff frequency, the continuous-time linear active filter including a differential amplifier having a single-pole transfer function; and
a sampling unit coupled to the continuous time linear active filter. - View Dependent Claims (11, 12)
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13. An information transmission unit comprising:
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a signal source;
a channel coupled to the signal source, the channel having a channel cutoff frequency;
a continuous-time linear active filter coupled to the channel to provide magnitude equalization, the continuous-time active filter configured as a single-ended non-inverting amplifier; and
a sampling unit coupled to the continuous time linear active filter. - View Dependent Claims (14, 15, 16, 17)
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18. An information transmission unit comprising:
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a signal source;
a channel coupled to the signal source, the channel having a channel cutoff frequency;
a buffer coupled to the channel;
an active filter coupled to the buffer to provide magnitude equalization between a range of frequencies above the channel cutoff frequency and a range of frequencies below the channel cutoff frequency, the active filter including a differential amplifier having positive feedback; and
a sampling unit coupled to the active filter. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. An information transmission unit comprising:
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a signal source;
a channel coupled to the signal source, the channel having a channel cutoff frequency;
an active filter coupled to the channel to provide magnitude equalization between a range of frequencies above the channel cutoff frequency and a range of frequencies below the channel cutoff frequency, the active filter including a differential amplifier having positive feedback; and
a sampling unit coupled to the active filter. - View Dependent Claims (26, 27)
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28. A method comprising:
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transmitting a continuous time signal including digital information on a channel;
receiving the continuous time signal from the channel and filtering the continuous time signal to form an equalized continuous time signal; and
sampling the equalized continuous time signal to recover the digital information. - View Dependent Claims (29, 30)
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Specification