Grupa: Administrator 
Lokalizacja:: Kłodzko JO80IK06AO
Posty: 42408 #8112873
Od: 2013-10-18
| Radio Design 101 - RF Mixers and Frequency Conversions - Episode 5, Part 1
This episode of the Radio Design 101 series focuses on RF mixers, and on frequency conversion schemes commonly used in wireless hardware. Starting with the basics, the process of up and down conversion is described and then demonstrated using a TinySA spectrum analyzer and a homebrew mixer built from an NE602 integrated circuit. Superheterodyne and direct conversion architectures are covered in some detail, and the video concludes with an examination of the dual conversion design used in modern spectrum analyzers. This is included in this Part 1 video. Part 2 of Episode 5 will cover some of the math behind mixing and discuss practical switching mixer circuits commonly used in radio hardware. As with other episodes in this series, this video is based on and supports a university senior design course in which students design, build, test, and document real-world hardware such as FM broadcast-band receivers and FSK digital comm links.
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI » DARMOWA REJESTRACJA
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73! Stanisław SP6MLK
Kłodzko JO80IK06AO
http://ra-ukf.iq24.pl/default.asp
http://www.ukf-te.iq24.pl/default.asp
http://spukfcontest.atthost24.pl/
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Grupa: Administrator
Lokalizacja:: Kłodzko JO80IK06AO
Posty: 42408 #8112875
Od: 2013-10-18
| Radio Design 101 - RF Mixers, Part 2 of Episode 5
This is the second half of Episode 5 that covers radio frequency mixers. This part focuses on real-world switching mixer designs, beginning with some math and then showing typical circuits found in practice. It concludes with an example from the university course that the Radio Design 101 series is derived from, showing how the entire FM broadcast band is downconverted and how an IF filter can be used to select the desired channel based on the frequency the LO is tuned to.
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI » DARMOWA REJESTRACJA
_________________
73! Stanisław SP6MLK
Kłodzko JO80IK06AO
http://ra-ukf.iq24.pl/default.asp
http://www.ukf-te.iq24.pl/default.asp
http://spukfcontest.atthost24.pl/
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