Leka_engineer recommends

🇬🇧 #youtube video by Mini-Circuits. In the datasheet the amplifier is presented without any additional circuitry. It is mentioned only RF OUT+Vdd on the scheme - it means that you should use coaxial bias-tee device or design the Vdd circuit yourself. In this video the circuit for 700-800 MHz is shown. I always recommend checking ALL the resources provided by the manufacturer. There can be some hints. #amplifier How to Tune the TSS 23ULN+ MMIC LNA to Operate at 700-800 MHz

🇬🇧International Journal of Metrology and Quality Engineering Link was found by my russian collegue&blogger, so the text is in Russian, but the Journal is in English. https://t.me/main_metrologist/337

🇬🇧 In general I do not recommend Altium website as a resource for RF&microwave knowledge, but this short article provide relevant equation and useful calculators. They are very simple so no room for a mistake. How did they write the article on patch antennas without single photo of one??? Why did they put a PCB with a mixer as a cover? Why there is a BT antenna in the end of the article? Microstrip Patch Antenna Calculator for RF Designers

🇬🇧 Mating Microwave connectors (Southwest Microwave)

🇬🇧 Understanding Torque Wrenches video (Rohde&Schwarz)

And mismatch losses table by Marki Microwave

🇬🇧 #onlinecalculator for mismatch losses https://www.keysight.com/used/md/en/knowledge/calculators/vswr-return-loss-calculator

🇬🇧 PDF file about high speed PCBs design. Posted in a Ru speaking telegram channel but the file itself is in English. Controlled impedance design guide by Sierra Circuits.

🇷🇺 Статья про проектирование КПП, идея похожа на КПП Таир, про которые я писала статью осенью, - авторы взяли герметичную розетку и спроектировали корпус для крепления на плату. Проектирование СВЧ коаксиально-микрополосковых переходов на базе гермовводов НПФ «Микран»

And Applying Error Correction to Vector Network Analyzer Measurements

🇬🇧 Today's topic is calibration. In my latest post in Instagram I mentioned that calibration needs to be performed every time. I've heard that some engineers neglect this rule but here are some materials that will explain why calibration is a must. Getting Started with Vector Network Analyzers (VNAs)

🇬🇧 Wrong (Not applicable in general) information in Mini-Circuits blog Applying Proper Torque to Microwave Connectors (they have a *note that these values are recommendations for their products). I post a lot from their blog, and they write mostly nice articles. But not this one unfortunately. Please perceive my post as a reminder to check everything twice. Right torque values can be found on Keysight or R&S appnotes (some I posted in this channel). Or here: Torque wrenches datasheet by Copper Moutain

🇬🇧 In Russian we call it supportive wrench (on the right) and it comes with a torque wrench (on the left). picture from Mini-Circuits blog

🇬🇧 Not a usual content today. Lately I am searching for material regarded phase stable Cables measurements. And I was advised to watch this video "How to Measure Phase Stability vs. Flexure" by MegaPhase. That's nice they showed SOMETHING because there little information about this subject in the internet. BUT 1)the video is 2 min ant the first half is introduction 2) the use torque wrenches without additional supporting wrench😱 3) they should make a full circle (like in the prev post ), not 180 deg bend or 180 deg one side and 180 deg other side

🇬🇧 #article in Mini-Circuits blog More than Just a Phase: Understanding Phase Stability in RF Test Cables

🇬🇧 Comic book about RF and Antennas. Only chapter 3 is attached. The book is in English. The RF-born (3)

🇬🇧 Just watched another RS video. I recently bought a Siglent power supply (made a reel video with unboxing) and it has Remote Sense option. So here is a video by my favourite #youtube author - Paul Denisowski. Understanding Power Supplies - Remote Sense

🇬🇧 Cavity #filter is a very popular topic nowadays. My engineer and blogger fellow posted this video about CST additional application that allows to synthesize cavity filter and the model it in CST studio.

But I have few negative comments: - lower cost? Wouldn't say so! it costs ~20 USD, there are a lot of same level for ~4-5 USD - why they did 58Ω line? - I strongly disagree with they choice to obtain S-parameters via de-embedding of the EVB shown. It has regular connectors (not super low VSWR test grade) and its covered with solder mask, which affects. - they show a connector cross section but dont give a partnumber. Different SMA connectors are different inside! - disagree with a choice of multilayer PCB. Could make 2 layer with a metal plate fpr rigidness - no explanation of bias network design - i didnt like they used different topology for the coaxial to printed line transition in the appnote and in the datasheet. Those rectangular pads in the datasheet pic (attached) are used to compensate long connector pin inductance. So its not clear - are those in the appnote are diffrent partnumber ? Or they simply just didnt make those pads??