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1,469,205 Views ā¢ Apr 14, 2024 ā¢ Click to toggle off description
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** Quick Facts! **
Manufacturer: MACOM
Part Number: FD25E
Cost per Unit: $181.92 (Digikey)
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As said above, this part is a frequency doubler, which is a type of component more generally referred to as a frequency multiplier. As the name suggests, it takes an input frequency signal and outputs a multiple of what comes in, or a harmonic of the input frequency. This particular part will double any input frequency in the range of 5 to 2400MHz. Over this range of frequencies, the output will typically be 13 dB less than the input.
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When I initially saw this part I expected there to be a chip inside of it, given its appearance. As I found out, looks can be deceiving! Inside there are a few passive parts that make up the frequency doubler circuit. According to the datasheet, this part includes a Schottky bridge quad diode, along with some ferrite baluns, and that's basically it. The parts are fixed into place and connected together with some enamel wire.
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I would recommend the wikipedia page on āFrequency Multipliersā for more information about how they work.
Views : 1,469,205
Genre: Science & Technology
Uploaded At Apr 14, 2024 ^^
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RYD date created : 2024-09-16T15:04:35.58831Z
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YouTube Comments - 361 Comments
Top Comments of this video!! :3
Cool! Amateur radio operators still build double balanced mixers from scratch. It is still the best way to do high linearity receiver mixers. A DBM and a doubler is built and looks almost the same. And as someone else said: they donāt work if you donāt terminate them correctly, both at source and load.
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Looks like a homemade double balanced mixer! I really like that you actually tried it out!
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Iām learning about building antennas and this was so cool to see that the same techniques used for HF radio antennas is used in small form for RF input/output at the transceiver level
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You probably need to impedance match the output of the signal. The rf going in is fine but on the output side it is likely reflecting and causing distortion.
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Funny... I worked for MACOM back in early 90's. Brings back memories...
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a few quick points, this is in essence a diode bridge mixer, if you send the same singnal into both input ports, you get the original signal as well as half and double the original frequency out the output. if you only want the doubled frequency, you then need either a high pass or bandpass filter on the output. this is what the rest of the components you desoldered where used for. It should be noted, that this all needs to be impedence matched
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Hello Sir, im a regular person but i have a hobby of breaking down electronics to see how they operate... Thank you i watch your content and you are most informative
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Love watching these decapsulations and break downs. š
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Wow thatās a cool circuit design
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I've been a mechanic since the 90s doing all types of hard mechanic work but that type of work he's doing would make my brains fall out
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Findling an unknown device, opening it up and actuslly understanding what this thing is doing so nice :3
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The frequency got doubled but since you didn't use the auxiliary components, the output signal was crap, I bet the full circuit does a good job, but only the doubler itself won't cut it.
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Did you terminate it with a matched impedance? That might be why you are seeing signal distortion (if you are feeding directly into a high impedance passive probe)
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Watching from the Philippines
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YOU KNOW, I REALLY DIG HOW YOU JUST GET RIGHT INTO TELLUNG WHAT YOUR DOING, AND DOING IT. ITS A STUDDY AS I SEE IT, AND IT TOUCHES ON MY FAMILYS HISTORY, in 8 -1958 , a man named JACK ST CLAIR KILBY invented the world's first INTREGATED CIRCUIT, he was my cousin, and, every time I see you cut open a new circuit, I see so much more of his creations .
I have handled and destroyed many of them as I was growing up, just to get a deeper look at his work which started one month after I was born.
Its an amazing thing, the IC.
BUT THE MOST MEMORABLE THING
IN MY MIND, IS WHEN I WATCHED A VIDEO OF HIM SAYING, ( "OH GOD FORGIVE ME FOR WHAT I MADE, BECAUSE I KNOW THAT MANKIND WILL USE IT FOR EVIL.") thats sad for any inventor .
You have cool videos, thanks for your work ,teaching, and studdies. š¤
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It doubles it by creating full wave pulsating DC which makes the peaks 2f. However the output will be distorted as the device is highly nonlinear and you still have pulsating DC out. Assuming you want logic level it would then be run through a low pass and a comparator with hysteresis. If not it would need a dc bias to move the zero crossing down and a low pass as well.
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The electronics manufacturing industry is among the most significant contributors to the manufacturing output in the Philippines
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You took the words right out of my mouth
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Love this channel very peaceful
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@Goldfinch23
5 months ago
This content is so interesting, it's like opening magic boxes
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