Pulse-signal recovering device with time-interleaving scheme

• US 8,737,554 B2
• Filed: 12/14/2011
• Issued: 05/27/2014
• Est. Priority Date: 12/14/2010
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Seong-Do, Park, Pil Jae, Woo, Sung Chul, Yu, Hyun Kyu
• Primary Examiner(s): Tran, Khanh C
• Application Number:
  US13/326,205
• Publication Number:
  US 20120148002A1
• Time in Patent Office: 895 Days
• Field of Search: 375/355, 375371-373, 370/503, 370/516
• US Class Current: 375/371
• CPC Class Codes: G01S 7/2921 based on data belonging to one radar period
• CPC Class Codes: H03M 1/1215 using time-division multiplexing
• CPC Class Codes: H03M 1/1265 Non-uniform sampling

Abstract

Disclosed is a pulse-signal recovering device with a time-interleaving scheme. Exemplary embodiments of the present invention can improve receive performance of a radar so as to shorten pre-scanning time for roughly determining presence and absence of objects and time consumed to recover received pulse signals in the radar receiver with the sub-sampling scheme by simultaneously sensing signal levels of the received pulse signals at several positions and improve a signal to noise ratio by increasing an averaging rate with respect to the number of same received pulses.

Claims

1. A pulse-signal recovering device, comprising:

a plurality of sampling blocks configured to sample a received signal and to output a plurality of sampled signals;

a sampling clock generator configured to generate a plurality of sampling clocks that have a same pulse repetition interval and have different time delays, the plurality of sampling clocks being input to corresponding sampling blocks, respectively, at different times; and

a multiplexer configured to receive the plurality of sampled signals and to output a recovered signal corresponding to the received signal,

wherein the received signal is detected at the different times determined by the plurality of sampling clocks.

2. The pulse-signal recovering device of claim 1, wherein the received signal is an impulse signal.

3. The pulse-signal recovering device of claim 1, wherein each of the sampling blocks includes a track and hold unit (T/H).

4. The pulse-signal recovering device of claim 1, wherein the plurality of sampling blocks are sampling blocks with a sub-sampling scheme.

5. The pulse-signal recovering device of claim 1, wherein the sampling clock generator includes a plurality of delay buffers configured to generate the plurality of sampling clocks.

6. The pulse-signal recovering device of claim 1, further comprising an analog-digital converter configured to convert the recovered signal into a digital signal.

7. A pulse-signal recovering device, comprising:

a plurality of sampling blocks configured to receive same receive signals;

a sampling clock generator configured to generate a plurality of sampling clocks each of which is input to a corresponding sampling block of the plurality of sampling blocks, the plurality of sampling clocks having the same pulse repetition interval and having different time delays;

a multiplexer configured to multiplex a plurality of sampling signals output from the plurality of sampling blocks and output recover signals corresponding to the receive signals; and

an analog-digital converter configured to convert an output signal of the multiplexer into a digital signal.