Blog Archives

Interpolation implementation in VHDL

This is a follow up on the previews article on the low and high pass filter designer. An algorithm is developed in order to perform interpolation. The FIR low pass filter from the last post is used in the interpolation

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Breakout board for the DAC900E a 165 MSPS @ 10 Bit DAC

This breakout board helps me to interface my FPGA with the DAC900E from Texas Instruments. The DAC has 165 MSPS and 10 bits which is quite some speed. The combination FPGA and DAC opens up for experiments with digital signal

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Design of a FPGA PCB including USB2.0 interface and two 80 MHz ADCs

This is my most advanced homemade PCB design until now. The PCB contains a EP3C5E144C8N Cyclone III FPGA from ALTERA, two 8 bit ADCs AD9057 from Analog Devices @ 80 MHz, a FTDI USB2.0 controller and many other things. The

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Build your own Software Defined Radio (SDR)

This project describes how to build you own Software Defined Radio (receiver part). Starting from an antenna, amplifiers, mixer, filter, ADC, FPGA a FM radio signal is received and demodulated in software. All the blocks for amplification, mixing, filtering and

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A GNU Radio Source Block for the FT232H USB 2.0 controller

Here comes the documentation on how to write a source block for GNU Radio interfacing the FTDI FT232H USB 2.0 controller. This is particular interesting when one is willing to build an own Software Defined Radio (SDR) using an FPGA

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