GB1358294A - Varactor ciodes - Google Patents
Varactor ciodesInfo
- Publication number
- GB1358294A GB1358294A GB3010371A GB3010371A GB1358294A GB 1358294 A GB1358294 A GB 1358294A GB 3010371 A GB3010371 A GB 3010371A GB 3010371 A GB3010371 A GB 3010371A GB 1358294 A GB1358294 A GB 1358294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- type
- varactor
- diffusing
- junction
- doping
- 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
Links
- 239000012535 impurity Substances 0.000 abstract 2
- 206010020751 Hypersensitivity Diseases 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000002019 doping agent Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
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
- H01L29/92—Capacitors having potential barriers
- H01L29/93—Variable capacitance diodes, e.g. varactors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
1358294 Semi-conductor devices SIEMENS AG 28 June 1971 [13 July 1970] 30103/71 Heading H1K A hypersensitive P-N junction varactor diode having a monotonic C-V characteristic and being capable of accurate reproduction in batch manufacture is made by diffusing into an N-type body (initial doping conc. N B ) further N-type impurities in such a way that part of the diffused doping profile approximates realistically to an exponential function, and then diffusing in a high concentration of P-type impurities so that a P-N junction is formed at a depth at which the N-type doping concentration is No, where N B /N 0 #6.1 x 10<SP>-3</SP>. For a Si varactor, e.g. formed in an epitaxial layer, the N and P-type dopants are preferably P and B respectively.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702034717 DE2034717C2 (en) | 1970-07-13 | 1970-07-13 | Tunable capacitance diode |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1358294A true GB1358294A (en) | 1974-07-03 |
Family
ID=5776635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3010371A Expired GB1358294A (en) | 1970-07-13 | 1971-06-28 | Varactor ciodes |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5436468B1 (en) |
AT (1) | AT307578B (en) |
CA (1) | CA920717A (en) |
CH (1) | CH552892A (en) |
DE (1) | DE2034717C2 (en) |
FR (1) | FR2098362B1 (en) |
GB (1) | GB1358294A (en) |
NL (1) | NL7107070A (en) |
SE (1) | SE363421B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2833319C2 (en) * | 1978-07-29 | 1982-10-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Capacitance diode |
-
1970
- 1970-07-13 DE DE19702034717 patent/DE2034717C2/en not_active Expired
-
1971
- 1971-05-18 CH CH726771A patent/CH552892A/en not_active IP Right Cessation
- 1971-05-24 NL NL7107070A patent/NL7107070A/xx unknown
- 1971-05-27 AT AT458771A patent/AT307578B/en active
- 1971-06-28 GB GB3010371A patent/GB1358294A/en not_active Expired
- 1971-07-12 FR FR7125424A patent/FR2098362B1/fr not_active Expired
- 1971-07-13 SE SE908571A patent/SE363421B/xx unknown
- 1971-07-13 JP JP5152771A patent/JPS5436468B1/ja active Pending
- 1971-07-13 CA CA118060A patent/CA920717A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT307578B (en) | 1973-05-25 |
DE2034717A1 (en) | 1972-01-27 |
CH552892A (en) | 1974-08-15 |
SE363421B (en) | 1974-01-14 |
FR2098362A1 (en) | 1972-03-10 |
NL7107070A (en) | 1972-01-17 |
JPS5436468B1 (en) | 1979-11-09 |
DE2034717C2 (en) | 1983-11-03 |
FR2098362B1 (en) | 1977-01-28 |
CA920717A (en) | 1973-02-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |