Studies on the Technology of impatt diodes

Simple item page
dc.contributor.authorAzi, Samuel Ogo
dc.date.accessioned2023-05-13T16:27:14Z
dc.date.available2023-05-13T16:27:14Z
dc.date.issued1985
dc.description99pen_US
dc.description.abstractAs telecommunication is pushing farther into the GHz radio frequency range IMPATT diodes have shown the highest power output of all microwave semiconductor devices at these frequencies. Though noisy, they are adequate for communication purposes and can be made to operate well into the waves. The physical basis of operation of IMPATT Ts is avalanche multiplication and transit tine of carriers through depletion layer of a reverse biased pn junction; giving rise to negative resistance. The device utilizes this property to generate rf power from a dc source. A survey of available literature has shown that the IMPATT diode is basically a pn junction and has evolved into complex multiple pn junctions over the years. It has also been observed that the technology of this device matured through the 1970's, therefore it can be adapted to existing facilities after a thorough study. This work is an attempt to make a simple diffused p+n Si structure with the necessary characteristics of a p +n IMPATT diode. Thus, having studied the device physics and technology a process for making a viable p+n IMPATT diode was proposed. A 5.0 ± 0.5 pm boron doped p+ layer was diffused on n type Si following the basic steps of this process. These p+n Si structures were characterised. Those with background concentration greater than 5 x 1015 cm3 were found to posses the expected properties.en_US
dc.identifier.urihttps://ir.oauife.edu.ng/123456789/5234
dc.language.isoenen_US
dc.publisherObafemi Awolowo University, Ile Ife, Nigeriaen_US
dc.subjectTelecommunicationen_US
dc.subjectCommunicationen_US
dc.subjectIMPATT diodesen_US
dc.subjectMicrowaveen_US
dc.subjectSemiconductoren_US
dc.subjectResistanceen_US
dc.subjectDiffusionen_US
dc.titleStudies on the Technology of impatt diodesen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Studies on the Technology of impatt diodes-M.Sc.pdf
Size:
29.93 KB
Format:
Adobe Portable Document Format
Description:
M.Sc. Electronic & Electrical Engineering
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
M.Sc