High speed sampler and demultiplexer

Patent · Sun Jan 01 00:00:00 EST 1995

OSTI ID:870226

McEwan, Thomas E ^[1]

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1. Livermore, CA

A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as "strobe kickout". The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5479120
• OSTI ID: 870226
• Country of Publication: United States
• Language: English

Related Subjects

speed
sampler
demultiplexer
sampling
based
plurality
banks
bank
comprising
sample
transmission
line
transmitting
input
signal
strobe
gates
respective
positions
response
control
circuitry
coupled
supplies
sequence
signals
lines
circuits
controlling
timing
samplers
included
supplying
sampled
repetitively
cycled
create
length
tier
demultiplexing
senses
corresponding
time
found
strobed
samples
stored
processing
repetitive
transient
induces
effect
kickout
structures
reduce
acceptable
levels
60
db
below
absorbing
pulses
repetition
speed sampler
control circuitry
sampling gate
acceptable levels
transmission lines
control circuit
transmission line
input signal
strobe transmission
sample transmission
sampling gates
speed sampling
strobe signal
multiplexing circuit
transient sampler
speed transient
speed sample
acceptable level
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