H - Electricity – 03 – K
Patent
H - Electricity
03
K
328/102
H03K 3/027 (2006.01) G01S 13/22 (2006.01) G01S 13/30 (2006.01) H03K 3/64 (2006.01) H03K 3/78 (2006.01)
Patent
CA 1129971
1 PHN 9196 ABSTRACT: A pulse generator fox generating pulse groups with desired widths and relations (spacings) within and between the groups up to extremely high speeds and with a time accuracy of the order of nanoseconds e.g. in radar applications. It is purely digital and operates on a control frequency which may he derived from an internal crystal oscillator ox may be externally supplied. The generator is divided into two main units, a first unit for determining the spacing of the pulse groups, and a second unit controlled by the first unit for determining the pulse widths and controlling pulse generator means. Different time space numbers and pulse widths numbers may be programmed into PROM memories of said units and may be selected by the same set of operating mode signals. The time spacing may also be optimized by means of an exter- nal computer controlling a further PROM holding informa- tion which may be combined with the time distance PROM information. Staggering and jittering radar modes may be obtained by supplying relevant mode signals. The pulse groups may comprise a ("listening interval") control pulse having a time position which falls within the next following pulse group but is generated with a fixed rel- ation to the pulses of its own group. Further trimming possibilities with respect to the internal pulse relations of a group are available. All mode signals required are of the two-level type.
318359
Koninklijke Philips Electronics N.v.
Van Steinburg C.e.
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