公开(公告)号：US3559069A

公开(公告)日：1971-01-26

申请号：US3559069D

申请日：1968-12-06

Applicant: NAT RES DEV

Inventor： HARTNAGEL HANS LUDWIG

IPC: H03K7/08

CPC classification number: H03K7/08

Abstract: IN A PLUSE DURATION MODULATION DEVICE TRAVELLING DOMAINS ARE NUCLEATED BY THE GUNN EFFECT OR THE LIKE AND THE PATH LENGTHS OF THE DOMAINS ARE VARIED TO VARY THE DURATION OF SIGNAL PULSES DERIVED FROM THE DOMAINS. IN ONE FORM THE DOMAINS ARE NUCLEATED IN RESPONSE TO PERIODIC

TRIGGER PULSES AND THE DURATION MODULATED SIGNAL PULSES ARE UTILISED IN A PULSE PHASE MODULATOR DRIVING A PHASED AERIAL ARRAY.

公开(公告)号：US3594618A

公开(公告)日：1971-07-20

申请号：US3594618D

申请日：1968-06-21

Applicant: NAT RES DEV

Inventor： HARTNAGEL HANS LUDWIG

IPC: G06F7/50 ,  G06F7/504 ,  G11C19/28 ,  H01L47/00 ,  H01L47/02 ,  H03K19/02 ,  H03M1/44 ,  H01L9/00

CPC classification number: G06F7/504 ,  G11C19/28 ,  H01L47/00 ,  H01L47/02 ,  H03K19/02 ,  H03M1/44

Abstract: A logic element is described utilizing a travelling field domain phenomenon, such as the Gunn effect, which occurs in a body of material when a field is produced in the body above a first threshold value to nucleate a domain and is maintained above a second threshold value to sustain the domain. A plurality of contact means are carried on the body together with output means for detecting a field domain in the body and for deriving an output signal therefrom, and the arrangement is such that application between a predetermined number of the contact means of a potential just sufficient to create a field domain in the body produces an output signal at the output means, but the application of the same potential between a number of the contact means greater than the said predetermined number does not produce an output signal at the output means. One arrangement of the invention provides a comparator logic element having one primary electrode, and two secondary input electrodes, and a number of circuits utilizing this comparator are described.