A Programmable FSK-Modulator in 350nm CMOS Technology

Year: 2010 Volume: 4 Issue: 6 950 - 953 Pages

• Authors:
• Nasir Mehmood
• Saad Rahman
• Vinodh Ravinath
• Mahesh Balaji

Abstract: This paper describes the design of a programmable FSK-modulator based on VCO and its implementation in 0.35m CMOS process. The circuit is used to transmit digital data at 100Kbps rate in the frequency range of 400-600MHz. The design and operation of the modulator is discussed briefly. Further the characteristics of PLL, frequency synthesizer, VCO and the whole design are elaborated. The variation among the proposed and tested specifications is presented. Finally, the layout of sub-modules, pin configurations, final chip and test results are presented.

• Keywords:
• FSK Modulator
• CMOS
• VCO
• Phase Locked Loop
• Frequency Synthesizer.

Real-Time Digital Oscilloscope Implementation in 90nm CMOS Technology FPGA

Year: 2010 Volume: 4 Issue: 11 1626 - 1629 Pages

• Authors:
• Nasir Mehmood
• Jens Ogniewski
• Vinodh Ravinath

Abstract: This paper describes the design of a real-time audiorange digital oscilloscope and its implementation in 90nm CMOS FPGA platform. The design consists of sample and hold circuits, A/D conversion, audio and video processing, on-chip RAM, clock generation and control logic. The design of internal blocks and modules in 90nm devices in an FPGA is elaborated. Also the key features and their implementation algorithms are presented. Finally, the timing waveforms and simulation results are put forward.

• Keywords:
• CMOS
• VLSI
• Oscilloscope
• Field Programmable Gate Array (FPGA)
• VHDL
• Video Graphics Array (VGA)