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ASSIGNMENT RADIO FREQUENCY ( RF)
Design Coupled Line Band pass Filter (edge coupled)
NAME MATRIC NUMBER
SARAVANAN A/L SUKUMARAN B071210044
MOHD RAFFI BIN JALIL B071210304
ABD HARITH BIN ABD HALIM B071210210
MUHAMMAD AKMAL BIN ZOHIZAM B071210167
NOORADILA BINTI ZAINE B071210240
MASHASSILA BINTI MD ALI B071210011
Prepared for : Pn. ELIYANA BINTI RUSLAN
INTRODUCTION
• Band pass filter allows frequencies between two cut-off frequencies while attenuating frequencies outside the cut-off frequencies.
• The Butterworth filter is a type of signal processing filter designed to have as flat a frequency response as possible in the passband.
• Known as a maximally flat magnitude filter
OBJECTIVE• To design, simulate, and fabricate edge coupled filter in microstrip
technology.
• To determine the comparison between measured and simulated results in regarding to microstrip technology.
• To calculate the values of admittance intervals, even and odd mode characteristics impedance.
• To design the circuit using the software called Advanced Design System (ADS).
• To acquire the knowledge on the process of fabrication can be divided into five main processes.
LITERATURE REVIEW
Attenuation versus normalized frequency for maximally flat filter prototypes.
Element value for maximally flat low pass filter prototypes.
METHODOLOGY
Calculation
Admittance Interval
Z0J1 = .................................. ...(1)
Z0Jn = for n= 2,3,.....N........(2)
Z0JN+1 = .................................(3)
Even mode characteristics impedance, Z0E = [ 1+ Z0 J +( Z0 J)2 ]
Odd mode characteristics impedance, Z0O = [ 1- Z0 J +( Z0 J)2 ]
ADS Simulation
Fabrication
Testing
Calculation Result
Simulation Result
Testing ResultReturn Loss
Insertion Loss
VSWR
DISCUSSION
• The theoretical and measured return loss value same -3dB.
• The measured insertion loss value different from theoretical value. This happens due to losses during soldering process, and cable connection.
CONCLUSION
End of this assignment,
• Able to determine the circuit of microstrip
Band pass filter.
• Able to design band pass filter design using ADS Software