14GHz Mixer Build & Experiments

Рет қаралды 26,830

7 жыл бұрын

Building a mixer based on the LTC5548 14GHz MMIC by LT, and a TCM1-83X+ by Mini-Circuits [plus bonus bodge wires ;)]
After measuring LO leakage, conversion loss and IIP3 at different frequencies, I build a poor-man's tracking generator with it.
I also talk (perhaps a bit too much) about HP's old signal identifier feature on my 8555A.
Thanks to LT and Mini-Circuits for providing samples of the components used in the video, I've definitely got bigger plans for these parts!
Design files are available at my other web page on this: sebholzapfel.com/2-14ghz-mixer...
An article I did on the PLL is here: sebholzapfel.com/14ghz-rf-synt...
WEBSITE POST: sebholzapfel.com/blog/14ghz-r...
CALLSIGN: VK2SEB

Пікірлер: 32

@chrischarters376 7 жыл бұрын

Awesome practitioner of the black arts. Kudos for the adept use of vintage test gear to boot! Love yr enthusiasm keep up the good work maaate!

@trifidsagitarius 7 жыл бұрын

Use a pencil for a pointer, the xacto knife is making us nervous specially when pointing at the SA's graticule :) Nice video !

@vk2seb 7 жыл бұрын

Also the tip actually warps the trace a little bit if it gets too close as it's slightly magnetized ;). Cheers!

@christiancampbell466 3 жыл бұрын

I came to make this same comment. I can’t hear what you’re saying when the blade gets too close! =‑)

@keithnoneya 4 ай бұрын

@@christiancampbell466🤣🤣🤣

@sparkyy0007 2 жыл бұрын

Were it me, I would have edited the video just a bit with a nice deep scratch and sound effects from that Xacto knife and pretend not to notice. The comment section would be glorious... lol Awesome video !!

@amirb715 5 жыл бұрын

Fantastic video. Thanks!

@fjs1111 4 ай бұрын

Awesome mixer, but what an awesome spectrum analyzer!! Can you do a video on that analyzers internals, digitizing..? I would love to see how that instrument is storing the scans... hmm at that era it had to be expensive in components

@OlaideAgbolade 5 жыл бұрын

Great video, very real and life like. No pretense!! cool

@anttikantola8128 6 жыл бұрын

Tech skills are so cool ! By now you have learned years more, and have built also DIY meter that reaches 15 Ghz ? :)

@Aemilindore 6 жыл бұрын

Thank you so much for this video. If possible I would like to ask a question. It's facinating you have this knowledge of these multiplexers , multipliers that work on RF. I too am interested in catching up with such. Could you pls recommend a book that has this knowledge?

@mailchaduarygaurav 6 жыл бұрын

it is a nice project and nicely designed board. it this possible to know from where did you get your PCBs made?

@yaobing-qw4rj 4 ай бұрын

Customized duplexers, filters, LC filters, power dividers, dual channel filters, design Negotiate prices based on indicators

@bflmpsvz870 4 жыл бұрын

Oustanding!

@seeker4430 5 жыл бұрын

Wow!

@alexandrpetrov1110 3 жыл бұрын

thank you

@TheArtofEngineering Жыл бұрын

Black magic in the microwave realm! Are you studying Engineering? I’m about to quit… want to play radio …. Quartus Prime FRPGA project presently making me very 😔. Thanks for this content!

@SignalsEverywhere 5 жыл бұрын

Love your videos, your channel is sure to grow if you keep these up. I'm planning to start playing with mixers and learning about them with the plan for making a portable 220 radio with a mixer, lo and one of those Chinese special "FM VHF/UHF HT" boards. With a filter and such ofc. Have you worked with the ADE-1? I bought one on a PCB I'm planning to experiment with using an SDR as the LO. I would love to collaborate with you on a future video if your interested. I have a lot of fun with SDR and your channel hits the spot when it comes to moving to working with the hardware end of radio. If interested you can best contact me on website you'll find linked from my channel page.

@djsbriscoe 2 жыл бұрын

Can you share the design files for the PLL board. I'd like to build one myself. I use Kicad or Altium designer. Thanks.

@neodiy 5 жыл бұрын

How much those devices like the frequency counter, spectrum analyzer, etc cost you for this lab? I want to build one but when i search it cost damn too much so perhaps you could give me an estimate

@stargazer7644 4 жыл бұрын

Microwave stuff isn't cheap. $1k-3k for a cheap surplus HP analyzer that goes to 20 GHz or so. 141T analyzers like he has go for $400-$1000 but are getting pretty old and fussy. $500-$1500 for a microwave counter good to 26 GHz.

@TheLightningStalker 4 жыл бұрын

It didn't look like there was solder paste on the center pad.

@rogeronslow1498 5 жыл бұрын

That coax cable looks like teflon so velocity factor isn't 0.66.

@stargazer7644 4 жыл бұрын

Odd that the calculation came out correct then, isn't it?

@pmlonline 6 жыл бұрын

God someone who speaks English!

@Argosh 6 жыл бұрын

Paul I get an allergic reaction after all the Indian stuff I had to listen to O_o

@qwaqwa1960 6 жыл бұрын

Knife as pointer...hmmm...brave...?

@pa3deeghztv302 7 жыл бұрын

nice video regards pa3dee

@vk2seb 7 жыл бұрын

cheers! glad you enjoyed the video :)

@drstrangelove09 3 жыл бұрын

What is the Texas Instruments board that you are using? (Appears to be a TI Lauchpad...?) Maybe like this? www.digikey.com/en/products/detail/texas-instruments/EK-TM4C123GXL/3996736