High speed sampler and demultiplexer
First Claim
1. A high speed sampler, comprising:
- a plurality of sampler banks, each bank includinga sample transmission line for transmitting a bank input signal;
a strobe transmission line for transmitting a bank strobe signal; and
sampler circuitry, connected to the strobe transmission line and the sample transmission line at a plurality of positions, which samples the bank input signal at the plurality of positions in response to the bank strobe signal to supply a plurality of samples of the input signal with a first effective sampling rate;
strobe control circuitry, coupled with the plurality of sampler banks,which supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, including circuits for controlling timing of the bank strobe signals;
input circuitry, coupled with the plurality of sampler banks, which supplies an input signal to the sample transmission lines in each of the plurality of banks; and
second tier demultiplexing circuitry coupled to the sampler circuitry in the plurality of positions which senses each of a plurality of samples to store samples developed in response to a plurality of strobe signals from each position for later processing.
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Accused Products
Abstract
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.
174 Citations
31 Claims
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1. A high speed sampler, comprising:
- a plurality of sampler banks, each bank including
a sample transmission line for transmitting a bank input signal; a strobe transmission line for transmitting a bank strobe signal; and sampler circuitry, connected to the strobe transmission line and the sample transmission line at a plurality of positions, which samples the bank input signal at the plurality of positions in response to the bank strobe signal to supply a plurality of samples of the input signal with a first effective sampling rate;
strobe control circuitry, coupled with the plurality of sampler banks,which supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, including circuits for controlling timing of the bank strobe signals; input circuitry, coupled with the plurality of sampler banks, which supplies an input signal to the sample transmission lines in each of the plurality of banks; and second tier demultiplexing circuitry coupled to the sampler circuitry in the plurality of positions which senses each of a plurality of samples to store samples developed in response to a plurality of strobe signals from each position for later processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- a plurality of sampler banks, each bank including
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17. A high speed sampler, comprising:
- a plurality of sampler banks, each bank including
a sample transmission line for transmitting a bank input signal; a strobe transmission line for transmitting a bank strobe signal; and sampler circuitry, connected to the strobe transmission line and the sample transmission line at a plurality of positions, which samples the bank input signal at the plurality of positions in response to the bank strobe signal to supply a plurality of samples of the input signal; strobe control circuitry, coupled with the plurality of sampler banks, which supplies the bank strobe signals to the strobe transmission lines in each of the plurality of banks, including circuits for controlling timing of the bank strobe signals; and input circuitry, coupled with the plurality of sampler banks, which supplies an input signal to the sample transmission lines in each of the plurality of banks in parallel, and suppresses strobe kickout. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
- a plurality of sampler banks, each bank including
Specification