Title:
高性能信号発生
Document Type and Number:
Japanese Patent JP5154594
Kind Code:
B2
Abstract:
A high performance phase detector includes a local digital oscillator for generating a digital reference signal of programmable frequency and phase. The phase detector accumulates a difference in phase between the digital reference signal and a sampled input signal to produce a measure of phase error. The phase detector can be advantageously used in a frequency synthesizer to produce signals with low phase noise and accurate phase control. Synthesizers of this type can further be used to as building blocks in ATE systems and other electronic systems for generating low jitter clocks and waveforms.
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Inventors:
Jufan
Application Number:
JP2010057327A
Publication Date:
February 27, 2013
Filing Date:
March 15, 2010
Export Citation:
Assignee:
Teradyne Ink
International Classes:
H03L7/085; G01R25/00; G01R25/04; G01R31/28; G01R31/317; G01R31/319; H03D3/00; H03D13/00; H03K5/26; H03L7/00; H03L7/091; H03L7/16; H03L7/087
Domestic Patent References:
| JP2001522206A | ||||
| JP11074940A |
Foreign References:
| US20020084856 | ||||
| WO2003067751A1 | ||||
| US6252464 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Hideka Tanaka
Tsuyoshi Kumano
Hideka Tanaka
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