Intro to RF - EEs Talk Tech Electrical Engineering Podcast #21

RF designs, radio, GPS, RADAR, and RF terms you need to know!
Links & agenda ↓↓↓

Check out the EEs Talk Tech electrical engineering podcast:

Twitter: @DanielBogdanoff

00:25 Daniel stole Phil’s joke
RF stands for radio frequency

00:40 Phil Gresock was an RF application engineer

1:15 Everything is time domain, but a lot of RF testing tools end up being frequency domain oriented

2:15 Think about radio. The tall radio tower isn’t actually an antenna but something to elevate the antenna.

3:50 Check out the FCC spectrum allocation chart

4:10 RF communication is useful when we want to communicate and it doesn’t make sense to run a cable to that device

4:50 When you tune your radio into a frequency, you are tuning to a center frequency. The center frequency is then down converted into the audible range

6:30 Check out Mike’s blog on how signal modulation works:

7:00 Communication is just one application. RADAR also is a very impactful RF application.

8:10 The principles between RF and DC or digital use models are very similar, but the nomenclature tends to be different.
Bandwidth for oscilloscopes means DC up to a frequency, but for RF it means the analysis bandwidth around a center frequency

9:22 Cellular and FCC allocation chart will talk about channels.
Channel in the RF domain refers to frequency ranges, but in the DC domain it typically refers to an input

10:25 Basic RF block diagram:
First, there’s an input from an FPGA or sensor. Then, that signal gets mixed with a local oscillator (LO). That then connects to a transmission medium, like a fiber optic cable or through the air.
Cable TV is an RF signal that is cabled, not wireless.
Then, the transmitted signal connects to an RF downcoverter, which is essentially just another mixer, and into a processing block.

13:50 Tesla created a remote control boat and pretended it was voice controlled.

15:30 Does the military arena influence consumer electronics, or does the consumer electronics industry influence the military technology?

16:00 GPS is a great example of military technology moving into consumer electronics

17:00 IoT (internet of things) is also driving a lot of the technology around small-scale smart devices

18:00 The ISM band is unregulated

19:15 New router uses a regulated frequency and hops off the frequency when it’s being used for emergency communications

20:50 RADAR, how does it work?

21:10 What are Phil’s favorite letters?

22:22 To learn more about RF, check out App Note 150

#RF #radiofrequency #radar #digital #electronics #wireless #radar #rfmeasurements #tutorial #rf101 #rfbasics #radio #iot #radar #GPS

[Jbaymusic]

I deal with mostly Rf connectors and cables I was always interested in more behind them I am a musician at heart but this is some cool stuff!

[j.herndon]

More podcasts that specialize in RF please! Great podcast episode!

[tommihommi]

I just built a BPF to be able to transmit WSPR with the Raspberry Pi GPIO/PWM trick.
Having access to the RF lab of my uni is really useful for that, a VNA makes everything so easy.

We're using R&S instead of Keysight, though, but hey, it's a German company and a German uni.

[IsaacBG]

MY dream is to work as an RF engineer, i got stuck with commercial two way radio career and its cool but be in the design side of those Tx, Rf PCB boards was my dream. Because i didnt aquire desgin experience, now almost imposible to get hired as one. Love to hear this guys talking about RF

[shubhamsharma]

First ever podcast I watched in my life and I loved it ... Will watch others too

[maximood-tired]

Thank you, your podcast is at the moment my favourite one! It's really interesting, hold it up!

[schwinn]

I didn't get the recommendation for the book, or was it a manual, by Daniel at the end of the podcast. In the comments "An Introduction to RF Circuit Design for Communication Systems", and "Microwave Engr." by Pozar were recommended.

[pogarythm]

I have no clue what the hell they are talking about but I like it

[James-yivk]

I'm a new EE and RF engineering inspired me to become an EE when I was in the military. What do I need to know to start getting on these projects?

[Firstner]

ISM bands, sub giga: 315M(Japan), 433M(EU and US), 868M(EU), 915M(US)
something like FoRa or RFM modules are great to work with in this ranges, range up to few km or miles with 100mW or less power

[rajneeshjha]

You guys are saving my life .Thanks and love.

[beverlyalexandraortiz-rami]

wow, these are amazing podcasts to happen to stumble upon!

[lite]

This was cool, really want to see more of these.👍

[TheDefpom]

He mixes up the RF systems, over simplified making it incorrectly stated...

[fifaham]

@18:10 UHF >> from 300 MHz to 3 GHz

[slickfish]

Why is the App note 150 link not working?

[KeysightLabs]

Are you working on an RF project? We'd love to hear about it!

[maxarseniy]

Ah damn no links are valid I wanted to learn more as it's a field of work I really want to get into

[ruslan.zhumabai]

It would be better if you add English subtitles.

[KittenisKitten]

Was great, but finally something interesting comes along, and you "say oh its 20 mins now" such a horrible way to end a conversation.