AI SearchModeling of site attenuation in a semi-anechoic chamber for EMC measurement (Record no. 77608)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03266nam a2200421 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818155530.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11712004 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-97-8 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Xu, Lin |
| 245 10 - TITLE STATEMENT | |
| Title | Modeling of site attenuation in a semi-anechoic chamber for EMC measurement |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1997 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 73 p.: |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-97-8 |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1997 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | According to international standards, EMC measurement has to be performed in an open area test site or its equivalent test site, such as a semi-anechoic chamber. To validate a test site, site attenuation test must be performed in that particular site. If the measured normalized site attenuation is within the 4dB range of the standard value, the site can be considered as qualified. To predict the performance of a semi-anechoic chamber before its construction and to find out the reason which may lead measured site attenuation exceed the limitation, a theoretical model must be considered. The existing model using ray tracing theory generally models the measurement antennas as a theoretical half-wave dipole antennas. This antenna model is appropriate for some EMC measurement antennas, such as tunable dipole and biconical antenna. However, when this antenna model is used to represent the measured results made with log-periodic dipole antennas, significant discrepancy appears (Gavenda, 1993). In this study, a general chamber model using ray tracing theory is developed. Since the model allows the true radiation pattern of different antennas to be included, it can be used for all types of EMC antennas. Based on the developed chamber model, the effect of log-periodic antenna has been studied and the method to eliminate the error caused by log-periodic antenna are also proposed. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Electromagnetic compatibility |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ahmed, Kazi Mohiuddin, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Zhang, Jian-Guo, |
| Relator term | Examination committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Lehtimaki, Seppo, |
| Relator term | Examination committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Nokia Telecommunications, Finland, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. TC-97-8 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B14002">http://203.159.5.9/ait-thesis/detail.php?q=B14002</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11712004 |
| b | mnait |
| c | y |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240403 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 980522 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | y |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120808869 |
| CREATED | CREATED : 2014-05-14 |
| RECORD Id | RECORD # : i12799506 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160045802 |
| CREATED | CREATED : 2016-02-03 |
| RECORD Id | RECORD # : i12887869 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050211018352 |
| CREATED | CREATED : 2022-03-17 |
| RECORD Id | RECORD # : i13374163 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.TC-97-8 | 30050120808869 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.TC-97-8 | 30050160045802 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.TC-97-8 | 30050211018352 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication |