Süleyman Bilgin, Yavuz Üser, Mustafa Oktay

Low Cost Laboratory Type Signal Generator Using DDS Method

Everyone who is an amateur or student interested in electricity or electronics needs a signal generator that can produce different types of signals that must be located at the front edge. This requirement can often be met by equipment in the laboratories or signal generators received at high prices under the project. This study focuses on the design of a low cost signal generator having high accuracy and sensitivity. In previous studies, DDS (Direct Digital Synthesis) method was implemented with FPGA and other high cost microcontrollers. With this study, the design of the high-accuracy signal generator has been made simpler and more cost-effective thanks to the PIC microcontroller, which can be found easily in the market. The device designed in the study is a digital signal generator that produces sine, triangle and square wave which are created using decimal numbers in the microcontroller and converted to analog signal via DAC (Digital to Analog Converter). Also, the digital potentiometer on the device, which is used as feedback in the circuit, allows us to control the output signal. This study provides a solution for producing a low cost laboratory type signal generator having high sensitivity, however this solution is not a new method. Satisfactory results have been achieved from the implementation circuit.

Keywords:

Signal Generator, Direct Digital Synthesis, Phase Circle,

PDF

___

[1] Shoucheng Ding, Aimin An and Xinke Gou, “Digital Waveform Generator Basedon FPGA”, Research Journal of Applied Sciences, Engineering and Technology, July 15, 2012.
[2] Pranjal A. Charde1, Prof. P.R. Lakhe, Akshay P. Nanote, Design of Multiple Waveform Generator & Frequency Counter Based On DDS, International Research Journal of Engineering and Technology,3(7), 2016.
[3] Cao Xiaodong, Ni Weining , Yuan Ling , Hao Zhikun , Shi Yin, A Compact Direct Digital Frequency Synthesizer for System-on-chip, Solid-State and Integrated-Circuit Technology,IEEE, 2008.
[4] Liuying. Limin, Function Signal Generator, Fourth International Conference on Digital Manufacturing & Automation, IEEE, 2013.
[5] Liu Ke, Tian Shulin, Xiao Yindong, A Method Of Amplitude-Frequency Characteristic Compensation About DDS Signal Source, The Eighth International Conference on Electronic Measurement and Instruments, 2007.
[6] Ziad Nouman, Bohumil Klima, Jan Knobloch, Generating PWM Signals With Variable Duty From 0 percent to 100 percent Based Fpga Spartan3an, Elektrorevue ISSN1213 – 1539, 4(4), ,2013.
[7] A Technical Tutorial on Digital Signal Synthesis, Analog Devices, Inc.1999.
[8] M. Y. Chua, V. C. Koo,” FPGA-BASED CHIRP GENERATOR FOR HIGH RESOLUTION UAV SAR” Progress In Electromagnetics Research, PIER 99, 71–88, • January 2009
[9] Anuradha S. Kherde, P.R.Gumble, A Review of Various Trends of Digital-To-Analog Converter with Performance Characteristics and Behavioral Parameters, International Journal of Advanced Research in Computer Science and Software Engineering, 3( 4), 2013.
[10] Anuradha S. Kherde, Pritesh R. Gumble, An Efficient Design of R-2R Digital to Analog Converter with Better Performance Parameter in (90nm) 0.09-µm CMOS Process, International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, 3(7), 2013.
[11] Jim Karki, “Active Low-Pass Filter Design”, AAP Precision Analog, Application Report, September 2002.
[12]PIC16F87XA Datasheet, Microchip Technology Inc. ,2003.
[13] Dual Digital Potentiometer Chip,Dallas Semiconductor, www.dalsemi.com datasheet number: 100899.
[14] TT electronics plc LIT-AN-R2RLADDER, “R/2R LADDER NETWORKS - Application Note” Issue 2.
[15] Vinaya Skanda, “Sine Wave Generator Using Numerically Controlled Oscillator Module”, Microchip Technology Inc.

International Journal of Engineering and Applied Sciences-Cover

Başlangıç: 2009
Yayıncı: Akdeniz Üniversitesi

Arşiv