×

Sample data band-pass filter device

  • US 4,920,510 A
  • Filed: 06/17/1987
  • Issued: 04/24/1990
  • Est. Priority Date: 06/20/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A signal processing system comprising, in combination:

  • a sampled-data band-pass filter means connected to receive an unattenuated input signal at a frequency included within an interval comprised between a first frequency (fsL) and a second frequency (fsH), which encompass a third frequency (fsO);

    said sampled-data band-pass filter means including a sampler means operating at a sampling frequency (fs) and band-pass means,said sampler means automatically performing a low-frequency shift of said unattenuated input signal which emcompasses a fourth frequency (f0), wherein said sampling frequency is equal to a whole submultiple of the sum of said third frequency (fsO) and said fourth frequency (f0),said band-pass means having, as its lower cutoff frequency, the difference between the sampling frequency and the second frequency (fs-fsH) and as its upper cutoff frequency the difference between the sampling frequency and the first frequency (fs-fsL).

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×