Title:
【発明の名称】櫛形フィルタを具える変調器
Document Type and Number:
Japanese Patent JP2703247
Kind Code:
B2
Abstract:
By the use of two additional mixing stages (21, 26) it is possible to replace the 2H glass delay line (operating at approximately 4.43 MHz) used in the known modulators by, for example, a charge-coupled device CCD (8) (which operates at approximately 625 kHz), enabling the total storage capacity required to be reduced in comparison with the situation in which the glass delay line is replaced directly by a CCD (operating at 4.43 MHz).
Inventors:
Franciscus Hermann Maria Bergen
Application Number:
JP1969988A
Publication Date:
January 26, 1998
Filing Date:
February 01, 1988
Export Citation:
Assignee:
Philips Electronics Nemrose Fennaught Shap
International Classes:
H03D7/00; H03C3/02; H04N9/83; H04N9/84; (IPC1-7): H04N9/84
Domestic Patent References:
| JP57141193A |
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)