GB1493602A - Semiconductor devices - Google Patents

Semiconductor devices

Info

Publication number
GB1493602A
GB1493602A GB2504474A GB2504474A GB1493602A GB 1493602 A GB1493602 A GB 1493602A GB 2504474 A GB2504474 A GB 2504474A GB 2504474 A GB2504474 A GB 2504474A GB 1493602 A GB1493602 A GB 1493602A
Authority
GB
United Kingdom
Prior art keywords
substrate
type
diode
inclusions
semiconductor devices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2504474A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB2504474A priority Critical patent/GB1493602A/en
Publication of GB1493602A publication Critical patent/GB1493602A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
    • H01L29/861—Diodes
    • H01L29/864—Transit-time diodes, e.g. IMPATT, TRAPATT diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Element Separation (AREA)

Abstract

1493602 Semiconductor devices DEFENCE SECRETARY OF STATE FOR 27 Aug 1975 [5 June 1974] 25044/74 Heading H1K A "distributed diode", e.g. for use in an IMPATT travelling wave amplifier or an electron beam scanned device, in which an electromagnetic wave propagates along the longitudinal axis of the diode parallel to the junction, comprises a planar junction 27 between layers 24, 29 supported by a substrate 28 having anisotropic resistivity by virtue of discrete reduced resistivity inclusions 30 extending through the thickness of the substrate. In the device shown the substrate 28 is of N-type Si with N<SP>+</SP>-type P-diffused regions 30 formed therein prior to deposition of N-type layer 29 and B-diffusion to form P<SP>+</SP>-type layer 24. Au electrodes 20, 22 complete the diode. The inclusions 30 may, in plan view, comprise bars extending across the width of the substrate 28, chevrons, or spaced circular cross-section columns. The substrate 28 may alternatively be P-type.
GB2504474A 1975-08-27 1975-08-27 Semiconductor devices Expired GB1493602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2504474A GB1493602A (en) 1975-08-27 1975-08-27 Semiconductor devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2504474A GB1493602A (en) 1975-08-27 1975-08-27 Semiconductor devices

Publications (1)

Publication Number Publication Date
GB1493602A true GB1493602A (en) 1977-11-30

Family

ID=10221318

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2504474A Expired GB1493602A (en) 1975-08-27 1975-08-27 Semiconductor devices

Country Status (1)

Country Link
GB (1) GB1493602A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143887A2 (en) * 1983-08-31 1985-06-12 Texas Instruments Incorporated Distributed impatt structure
US4525732A (en) * 1983-08-31 1985-06-25 Texas Instruments Incorporated Distributed IMPATT structure
US4568889A (en) * 1983-08-31 1986-02-04 Texas Instruments Incorporated Distributed diode VCO with stripline coupled output and distributed variable capacitor control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143887A2 (en) * 1983-08-31 1985-06-12 Texas Instruments Incorporated Distributed impatt structure
US4525732A (en) * 1983-08-31 1985-06-25 Texas Instruments Incorporated Distributed IMPATT structure
US4568889A (en) * 1983-08-31 1986-02-04 Texas Instruments Incorporated Distributed diode VCO with stripline coupled output and distributed variable capacitor control
EP0143887A3 (en) * 1983-08-31 1987-05-20 Texas Instruments Incorporated Distributed impatt structure

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee