3 results about "Pulse shaping circuits" patented technology

Disclosed herein is a radiological instrument (100, 200, 300, 400, 600, 700, 800) comprising at least one pulse shaper circuit (102) configured for a direct conversion radiation detector (108). The at least one pulse shaper circuit comprises an amplifier (110). The pulse shaper further comprises: a feedback circuit (118) in parallel with the amplifier; a first switch unit (120) in series with the feedback circuit; a second switch unit (122) in parallel with the amplifier; a discrimination circuit (124) providing a discrimination signal (128) when the output exceeds a controllable signal threshold; and a control unit (124) for controlling the first switch unit and the second switch unit, wherein the control unit controls the second switch unit such that when the second switch unit is closed, a majority of the signal is integrated.

A multi-cycle path circuit includes a logic circuit, a memory, and an on-chip clock controller. The multi-cycle path circuit is configured to operate in a functional mode in which the logic circuit controls reading and / or writing of the memory, and in a full-speed test mode in which the logic circuit controls reading and / or writing of the memory. The invention uses a clock pulse shaping circuit to control a functional mode clock gating element and a clock divider to establish a multi-cycle phase relationship between a clock into the logic and a secondary cache DRAM memory timing path. It also ensures that the clock path into and out of the secondary cache DRAM is the same in the functional mode and the full-speed test mode to avoid hold and set timing conflicts between these modes.

The present application relates to the technical field of steep pulse shaping of pulse forming circuit, and particularly relates to a steep pulse energy shaping method based on a pulse forming circuit, which comprises: charging an energy storage capacitor group in a preset charging period, and initially gating a shaping network composed of PFN segments and Blumlein transmission line segments and an impedance gradient matching network; triggering a shaping switch to output a test pulse when a charging voltage reaches a target value, obtaining an incident component and a reflected component through an output sampling branch and generating a reflected characteristic quantity; the reflected characteristic quantity performs gating update on the matching network segment impedance configuration and the shaping network segment combination according to the minimum reflection criterion, and triggers a retest test pulse to obtain a retest reflected characteristic quantity; triggering a working pulse output when the retest reflected characteristic quantity is less than or equal to a reflected judgment threshold, and obtaining a steep pulse energy shaping result at a load end. The present application improves impedance matching consistency and waveform stability through reflected quantity closed-loop gating.