Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line
Nowadays, expeditious developments in the electrical and electronic territory due to endless demands from the markets have driven the operation frequency of the system into the gigahertz region. This had evolved into a more effectual-performance system, but also inflicts a lot of difficulties...
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2009
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my-uthm-ep.74742022-07-25T02:06:50Z Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line 2009-06 Yee, See Khee TK Electrical engineering. Electronics Nuclear engineering TK7800-8360 Electronics Nowadays, expeditious developments in the electrical and electronic territory due to endless demands from the markets have driven the operation frequency of the system into the gigahertz region. This had evolved into a more effectual-performance system, but also inflicts a lot of difficulties to the designers, for examples Electromagnetic Interference (EMI) problem and Signal Integrity (SI) issue. The integrity of circuit layout is inevitably compromised by bifurcated traces for examples T -junctions, Y -junctions, right-angle bends or left-angle-bends and steps planar transmission lines in order to fulfil the needs of a denser printed circuit boards. However, bifurcation often induces impedance mismatching resulting in reflection, radiated emission and power loss. This research is to investigate the radiated emission of 0°,45° and 90° bent microstrip lines by using an analytical fODnulation followed by computer simulation and experimental measurements for validation purposes. The novelty of this research is the implementation of travelling wave mode (TWM) method on bent microstrip line by adopting the equivalent wire model. The reliability of the formulation is proven from the agreement between the analytical results and computer simulation, especially in predicting the E¢ component. The analytical results clearly showed the significance of the bent in altering the radiation pattern of the microstrip line. Increasing the operating frequency and microstrip's width tend to produce more emission. One of the electric field components, Eo is almost symmetrical with respect to the bent angle/2 line on the plane of the microstrip line, while the E¢ component radiates strongly into the bent angle + bent anglel2 direction. The magnetic field on the bent microstrip line experiences an abrupt change at the location of the bent. This change becomes apparent as the bent angle increases. Future work should focus on improving the analytical fornmlation so that it can predict the Eo component with higher accuracy. FurtheDnore, effort can also be made on generating algorithm which takes into consideration the composite electric field radiation of all the bents on a practical printed circuit board. 2009-06 Thesis http://eprints.uthm.edu.my/7474/ http://eprints.uthm.edu.my/7474/1/24p%20YEE%20SEE%20KHEE.pdf text en public http://eprints.uthm.edu.my/7474/2/YEE%20SEE%20KHEE%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/7474/3/YEE%20SEE%20KHEE%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Elektrik dan Elektronik |
| institution |
Universiti Tun Hussein Onn Malaysia |
| collection |
UTHM Institutional Repository |
| language |
English English English |
| topic |
TK Electrical engineering Electronics Nuclear engineering TK7800-8360 Electronics |
| spellingShingle |
TK Electrical engineering Electronics Nuclear engineering TK7800-8360 Electronics Yee, See Khee Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| description |
Nowadays, expeditious developments in the electrical and electronic territory due to
endless demands from the markets have driven the operation frequency of the system
into the gigahertz region. This had evolved into a more effectual-performance
system, but also inflicts a lot of difficulties to the designers, for examples
Electromagnetic Interference (EMI) problem and Signal Integrity (SI) issue. The
integrity of circuit layout is inevitably compromised by bifurcated traces for
examples T -junctions, Y -junctions, right-angle bends or left-angle-bends and steps
planar transmission lines in order to fulfil the needs of a denser printed circuit
boards. However, bifurcation often induces impedance mismatching resulting in
reflection, radiated emission and power loss. This research is to investigate the
radiated emission of 0°,45° and 90° bent microstrip lines by using an analytical
fODnulation followed by computer simulation and experimental measurements for
validation purposes. The novelty of this research is the implementation of travelling
wave mode (TWM) method on bent microstrip line by adopting the equivalent wire
model. The reliability of the formulation is proven from the agreement between the
analytical results and computer simulation, especially in predicting the E¢
component. The analytical results clearly showed the significance of the bent in
altering the radiation pattern of the microstrip line. Increasing the operating
frequency and microstrip's width tend to produce more emission. One of the electric
field components, Eo is almost symmetrical with respect to the bent angle/2 line on
the plane of the microstrip line, while the E¢ component radiates strongly into the
bent angle + bent anglel2 direction. The magnetic field on the bent microstrip line
experiences an abrupt change at the location of the bent. This change becomes
apparent as the bent angle increases. Future work should focus on improving the
analytical fornmlation so that it can predict the Eo component with higher accuracy.
FurtheDnore, effort can also be made on generating algorithm which takes into
consideration the composite electric field radiation of all the bents on a practical
printed circuit board. |
| format |
Thesis |
| qualification_name |
Master of Philosophy (M.Phil.) |
| qualification_level |
Master's degree |
| author |
Yee, See Khee |
| author_facet |
Yee, See Khee |
| author_sort |
Yee, See Khee |
| title |
Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| title_short |
Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| title_full |
Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| title_fullStr |
Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| title_full_unstemmed |
Equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| title_sort |
equivalent wire model and travelling wave mode method to analyse the radiated emission of a bent microstrip line |
| granting_institution |
Universiti Tun Hussein Onn Malaysia |
| granting_department |
Fakulti Kejuruteraan Elektrik dan Elektronik |
| publishDate |
2009 |
| url |
http://eprints.uthm.edu.my/7474/1/24p%20YEE%20SEE%20KHEE.pdf http://eprints.uthm.edu.my/7474/2/YEE%20SEE%20KHEE%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/7474/3/YEE%20SEE%20KHEE%20WATERMARK.pdf |
| _version_ |
1747831158748479488 |