公开(公告)号：US3293447A

公开(公告)日：1966-12-20

申请号：US27189963

申请日：1963-04-10

Applicant: IBM

Inventor： FLEMING PAUL L

IPC: H03F3/12 ,  H03F7/00 ,  H03F7/04

CPC classification number: H03F3/12 ,  H03F7/00 ,  H03F7/04

公开(公告)号：US3521243A

公开(公告)日：1970-07-21

申请号：US3521243D

申请日：1968-08-01

Applicant: IBM

Inventor： FLEMING PAUL L

IPC: G11C27/00 ,  H03K3/02

CPC classification number: H03K3/02 ,  G11C27/00

公开(公告)号：US3076180A

公开(公告)日：1963-01-29

申请号：US84525559

申请日：1959-10-08

Applicant: IBM

Inventor： HAVENS BYRON L ,  FLEMING PAUL L ,  SCHREINER KENNETH E

IPC: G11C21/00

CPC classification number: G11C21/005

公开(公告)号：CA844785A

公开(公告)日：1970-06-16

申请号：CA844785D

Applicant: IBM

Inventor： FLEMING PAUL L ,  HAVENS BYRON L ,  SCHREINER KENNETH E

公开(公告)号：CA789104A

公开(公告)日：1968-07-02

申请号：CA789104D

Applicant: IBM

Inventor： FLEMING PAUL L

公开(公告)号：CA865862A

公开(公告)日：1971-03-09

申请号：CA865862D

Applicant: IBM

Inventor： FLEMING PAUL L

公开(公告)号：DE1277944B

公开(公告)日：1968-09-19

申请号：DEJ0025618

申请日：1964-04-09

Applicant: IBM

Inventor： FLEMING PAUL L

IPC: H03F3/12 ,  H03F7/00 ,  H03F7/04

Abstract: 1,043,617. Tunnel diode frequency changing and amplifying circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 19, 1964 [April 10, 1963], No. 11580/64. Heading H3T. A parametric circuit comprises a negative conductance device, biased in its positive resistance region and arranged to have negative conversion conductance at the second harmonic of the local oscillator frequency. Fig. 1 shows a repeater comprising a cascade arrangement of three frequency converters 10, 10a, 10b each comprising a tunnel diode 14 biased by a source 34 to the positive resistance region. Signals at 1950 Mc/s. from source 44 are fed via a circulator 42 and a directional filter 12 to the tunnel diode 14 of converter 10 where they are mixed with a voltage at 2050 Mc/s. from a common local oscillator or pump source 22, giving an idler or difference frequency which is dissipated in load 30. A further frequency f i2 of 2150 Mc/s. is derived by beating the second harmonic of the local oscillator frequency with the input frequency f s . Inductors 26 are tuned with the self-capacitance of the tunnel diode 14 to the input frequency f s which is arranged to be approximately equal to the local oscillator frequency fp and also to the frequency f i2 . Frequencies f s and f i2 are fed via circulator 42 to a further converter 10 a . The required output frequency may be selected by means of a filter, not shown. The circuit is stated to have a total power gain of 32À8 db. The invention may be applied to systems using strip lines, wave guides or coaxial cables and may utilize tunnel diodes, having different peak current values.