1. DESIGN AND PERFORMANCE OFDESIGN AND PERFORMANCE OF
CANTENNA FOR WIRELESS LOCALCANTENNA FOR WIRELESS LOCAL
AREA NETWORKAREA NETWORK
PREPARED BY:
MANIKUMAR A/L MARIMUTHO (GP00179)
SUPERVISOR:
PROF. DR. MAHAMOD BIN ISMAIL
2. Introduction
Problem Statement
Research Objectives
Methodology
Results and Discussion
Conclusion
Future Work
OUTLINEOUTLINE
3. Wireless Local Area Network (WLAN) is very
popular for last mile access.
Various WLAN standards: IEEE 802.11a/b/g/n
WLAN operate in Line-of-Sight (LOS) and
indoor environment and subjected to multipath
fading and signal blockage ~ within 100 – 300
meters with different data rates.
High gain antenna enable WLAN to increase
their range and accommodate higher data rate
CANTENNA is a directional waveguide
antenna for long-range wireless LAN used to
increase the range of existing wireless network
connection.
INTRODUCTIONINTRODUCTION
4. •Among problem encounter using typical low gain
WLAN antenna:
limited distance access
Weak signal reception and subject to the interference
Data packet loss when surfing the internet
at long range.
• High gain antenna (Cantenna)
Provide a method to extend the wireless coverageProvide a method to extend the wireless coverage
distance ~ up to 1 kmdistance ~ up to 1 km
More practical to use directional antenna thanMore practical to use directional antenna than
omidirectional antennaomidirectional antenna
Cheaper prizeCheaper prize
Very practical to develop own CantennaVery practical to develop own Cantenna
PROBLEM STATEMENTPROBLEM STATEMENT
5. To study various types and factors influencing
the WLAN antenna performance
To design and develop the can-based antenna
for WLAN IEEE802.11 b/g application
To measure and analyze the cantenna
performance in the real WLAN environment
RESEARCH OBJECTIVESRESEARCH OBJECTIVES
6. Among the methods involved includes as follows:
• Cantenna Design Specification
• Cantenna Design using software
• Cantenna Construction/Building
• Cantenna Testing
• WiFi Performance using Cantenna
METHODOLOGY (1/13)METHODOLOGY (1/13)
7. Learn about wireless network.
Literature review about antenna .
Learn about the cantenna design.
Learn to use software to design the cantenna and
graph simulation techniques for comparison .
Hardware requirement survey.
Build the cantenna.
Compare and analysis performance cantenna.
Full report based on result.
METHODOLOGY (2/13)METHODOLOGY (2/13)
8. METHODOLOGY (3/13)METHODOLOGY (3/13)
- Hardware Requirement- Hardware Requirement
Can or Aluminum.Can or Aluminum.
WiFi Wireless Adapter with External Jack.WiFi Wireless Adapter with External Jack.
RP-SMA Connector (N-Type-Male).RP-SMA Connector (N-Type-Male).
A N-Female chassis mount connector.A N-Female chassis mount connector.
Small nuts and bolts.Small nuts and bolts.
10. D is the interior diameter of the can
Lo is wavelength in open air = 0.122 meters
Lc is wavelength at lower dominant mode cut off
frequency
>Lu is wavelength at higher dominant mode cut off
frequency
Lg is standing wavelength inside can
Lc = 1.706D
Lu = 1.306D
Lg = 1 / (sqr_rt{(1/Lo)2 - (1/Lc)2})
Ideally operating range :
Lower cut-off frequency should be lower than 2400
MHz
>Upper cut-off should be higher than 2480 MHz
REF (http://www.thedropzone.co.nz/cantennacal.htm)
METHODOLOGY (5/13)METHODOLOGY (5/13)
- Design Parameters- Design Parameters
11. Java Based CalculatorJava Based Calculator
http://flakey.info/antenna/waveguide/#calculator
METHODOLOGY (6/13)METHODOLOGY (6/13)
- Design Parameters- Design Parameters
15. Experiment 1
Objective:To Determine Signal. Strength
Using Netstumbler.
Using four type of CANTENNA :-
JULIES POTATO Can, PRINGLES Can, CANTENNA 1
and CANTENNA 2
Experiment 2
Objective :Test for maximum distance covered.
CANTENNA 2 used
Need Ad-hoc Network Setup
Set an access point and ping to the access point.
Move away with collecting results.
METHODOLOGY (10/13)METHODOLOGY (10/13)
- Field Testing- Field Testing
16. Two different Access Point Testing at MMU,CyberjayaTwo different Access Point Testing at MMU,Cyberjaya
About 200 meter from CITS Lab
About 500 meter from Library
METHODOLOGY (11/13)METHODOLOGY (11/13)
- Field Testing- Field Testing
17. Two different Access Point Testing at MMU, CyberjayaTwo different Access Point Testing at MMU, Cyberjaya
First access point at CITS
Second access point at Library
Static Network
METHODOLOGY (12/13)METHODOLOGY (12/13)
- Field Testing- Field Testing
18. 10.10.10.1 10.10.10.2
ping
Ping about 600 meter away
Ping about 1200 meter away
Static
METHODOLOGY (13/13)METHODOLOGY (13/13)
- Field Testing- Field Testing
22. No noise
All stable at first access point
More than -79dBm
Second access point cause drop in signal
strength
Between -84dBm to -73dBm
CANTENNA 2 receive better signal
RESULTS (4/9)RESULTS (4/9)
26. Packet Sent =3755
Packet Received =3725
Loss =30
MIN Time =1ms
MAX Time =1603ms
Average Time =14ms
RESULTS (8/9)RESULTS (8/9)
Ping test around 800-1165mPing test around 800-1165m
27. Manage to extend the range
Achieved about 1156 to 1165 meter
Stable on the starting
Shows some delay while moving
Time Out status
RESULTS (9/9)RESULTS (9/9)
28. Four types of Cantenna have successfully been
design and tested.
The Cantenna performance met the objective
of extending the coverage up to 1 km and
boosting the data rates.
Cantenna 2 outperformed other antennas
followed by Cantenna 1.
CONCLUSIONCONCLUSION
29. Extending the range and the performance of
the CANTENNA.
Better material for body, connectors and pigtail
cables
Auto scan function included.
FUTURE WORKFUTURE WORK
