The pass band of a filter is the range of frequencies that are allowed to pass through the filter with minimum attenuation (usually defined as less than of attenuation). I will begin this topic with a little introduction of a filter What is a filter?Ī filter is a circuit that passes certain frequencies and attenuates or rejects all other frequencies. I will also include some applications and significance of this topic to our technology today. 180 pages, from December 25th, 2015ĭownload: Russian qucsstudio Tutorial part 2 (Harmonic Balance Simulations) as pdf-File, ca.Here I am again to guide you in creating and designing a simple active low pass filter using passive components, resistor and a capacitor and one active component, the op-amp. Spassibo, Vladimir!ĭownload: qucsstudio Tutorial part 1 (Time and Frequency simulation) as pdf-File, status quo = 230 pages from March 9th, 2016ĭownload: qucsstudio Tutorial part 2 (Harmonic Balance simulations) as pdf-File, status quo = 51 pages from January 1st,2016ĭownload: Filter Design Software "fds.exe"ĭownload: Russian qucsstudio Tutorial part 1 (Time and Frequency Domain Simulations) as pdf-File, ca. and as a new option: qucsstudio-tutorial (part 1 and part 2) in Russian. Modulation and Demodulation (AM / FM / PM / QAM) including IQ Modulationĭevelopment of a microstrip LPF for 1700 MHZĭevelopment of a 1575 MHz BPF using coupled microstrip lines LNA with a NF below 0.4dB for the frequency range from 1.1,7 GHzĭevelopement of a narrow bandpass filter for 10.7 MHz and high stop band attenuation up to 500 MHz Measured results using the vectorial network analyzer MMIC broadband amplifier up to 3 GHz (S parameters, stability, PCB layout, danger of self oscillation, Microstrip lines and Grounded Coplanar Waveguides OPA circuits including working with Spice models from the Internet Third project: diodes (One pulse rectifier with an ideal diode / diode from the qucsstudio library / Spice models from the Internet)Ĭhecking a one stage transistor amplifier (DC-Analysis / transient simulation / spektral content in dB / AC sweep / example using a SPICE model from the Internet) The FFT as bridge between the Time Domain and the Frequency Domain RC Low Pass Filter (Simulations in the Time and in the Frequency Domain / FFT) You can download them from this site (download possibility is following to the tutorial download).Įverything is now terminated and translated and thus you find these themes and projects in part 1 of the tutorial: Part 2 shows Harmonic Balance Simulations on 51 pages.įor chapter 14 (Narrow Bandpass Filter 10,7 MHz) you will need three additional programs. Part 1 shows simulations in the Time Domain and the Frequency Domain using a huge number of projects (= 230 pages, last added chapter is "development of a 1575 MHz You can download from this site an english tutorial in two parts: Here comes a new, powerfull and free of charge RF CAD program which simulates in the Frequency Domain and in the Time Domain and can use "Harmonic Balance". New: RF circuit simulation using qucsstudio Leichter Einstieg in die SPICE-Simulation
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