Electronic and Communications Engineering (EComE) Prof TS Ng Program Director
22
Electronic and Communications Engineering (EComE) Prof TS Ng Program Director
description
Electronic and Communications Engineering (EComE) Prof TS Ng Program Director. EComE. Longest history among other similar programmes in Hong Kong. One of our FOUR programmes Emphasis on electronics and communications technologies. Electronics. Semiconductor materials - PowerPoint PPT Presentation
Transcript of Electronic and Communications Engineering (EComE) Prof TS Ng Program Director
Electronic and Communications Engineering (EComE)
Prof TS NgProgram Director
• Longest history among other similar programmes in Hong Kong.
• One of our FOUR programmes
• Emphasis on electronics and communications technologies.
EComE
Electronics• Semiconductor materials
p type n type
• Diodes
• Transistors
Electronic Devices such as
Analogue circuits
AmpAmp
• Amplifiers, oscillators, filters and mixers, etc
Digital Circuits• Logic circuits, adders, counters, memories, micro-controllers, microprocessors and CPU, etc
001
010
011
Adder
Inverter Adder 230 million transistors
Communications Systems• Model of a communications system
• which could be the cell phone systems, TV broadcast systems, fiber optic system, radio broadcast systems, telephone systems, WLAN systems or GPS system etc.
Fiber Optic systems
Model of a simple fiber optic system
Equivalent to
Fiber Optic systems (cont’d)Information is represented as optical signal sent to the fiber optic cable
How does it work?
TV Broadcast System
BenefitsAn analogue TV channel occupies about 8MHz frequency band, but by using MPEG-2 compression technology, the same bandwidth can accommodate at least four digital standard definition TV (SDTV) programme channels or one high definition TV (HDTV) programme channel at a time.
• How to do this?
Radio broadcast
Frequency Hz
AM broadcast FM broadcast
535 k Hz 1606.5 kHz 88 MHz 108 MHz
•Currently
•FM requires 0.3 MHz per programmeBy using digital techniques, the efficiency could be improved by about 17 times.•How to do this?
Cellular Mobile Communications Systems
•2G GSM and CDMA (IS-95)
•2.5G GPRS and EDGE
•3G WCDMA system
•3.5G HSDPA and HPUPA
•How do they work?
Wireless LAN
How does it work?
Global Positioning System (GPS)
How does it work?
Spacecraft Voyagers
•Launched in 1977. Now at 9.5 billion miles from the Sun. Light (signal) takes over 13.8 hrs to reach Earth (cf the Moon is about 1.4 light sec away from Earth, the Sun is about 8.5 light minutes away).•Still sending (very weak) signal back to Earth.
How to receive the signal?
Large Antenna & powerful error correction coding
NASA/JPL 70-meter Deep Space StationHow does it work?
The robot “Phoenix” sent to Mars to investigate whether Mars is a possible habitat for life
How to control the Robot?
Employment Statistics (2006)BEng(EComE) Faculty of Engineering
Responses
Population 40 449
Respondents 38 432
Response rate 95.0% 96.2%
Employment Situation
Further studies 18.4% 13.9%
Full-time employed (regular) 81.6% 84.3%
Total 100.0%
Salaries
Maximum gross salary $20,167 $40,000
Average gross salary $13,343 $12,825
Minimum gross salary $10,200 $7,000
Employment Statistics (2006)Salary Bands BEng(EComE) Faculty of Engineering
<$10,000 0.0% 9.4%
$10,001 to $14,999 81.5% 73.6%
$15,000 to $19,999 14.8% 11.6%
$20,000 to $24,999 3.7% 3.1%
>$25,000 0.0% 2.2%
Total 100.0% 100.0%
Job Satisfaction
Very Much 7.4% 8.6%
Good 44.4% 46.7%
Average 37.0% 36.8%
Below Average 7.4% 7.0%
Not Much 3.7% 1.0%
Total 100.0% 100.0%
Employment Statistics (2006)
Major OccupationsBEng(EComE
)Faculty of Engineering
Engineers 22.6% 36.0%
System Analysts & Computer Programmers
29.0% 17.6%
Engineering Technicians 0.0% 2.2%
Business Professional 29.0% 16.5%
Others 19.4% 27.7%
Total 100.0% 100.0%
Questions and Answers later!
