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Thank you. A very informative session and an excellent series.

Author

Thank you Fanny; very informative session

Author

Thanks for this course. It has been informative.

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Thank you very much.

Author

May I have one more question: one slide 20 of Jan 17 section, it says that BIFA antenna performance is very good. I wanted to try it on our products, but I don't know how to match it to differentical input of the RF IC. Do you have any paper(s) recommended for me to read? Thank you!

Author

very informative sections. I feel that I want to anttend EE times university now.

Author

Thank you Fanny for informative lecture, thank you Alex for directing

Author

yes - very important to correlate lab to field test results

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Interesting fact is to see any deviations from lab testing and open field. And correct them accordingly.

Author

you can typically catch 70-80% of issues in the lab and then you need to go into the real-life environment to catch the rest... or your customers will catch them in the end :)

Author

however, you can create controlled dynamic conditions, such as noise, multipath and emulated motion in the lab

Author

Field test is required, of course

Author

Lab testing does have its limitations

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comment: Lab testing is prone to stay in the static state vs dynamic state of field environment.

Author

Public safety LTE handsets require mission-critical voice service, and commercial LTE currently does not support voice, so this leaves some work for the industry to do.

Author

octoScope has done work iwth LMR radio technology and we completed a project iwht DHS on public safety LTE deployment.

Author

at octoScoe we developed a line of magnetic filters that support gig Ethernet PoE, USB and other copper transmissionl lines

Author

Slide 15 shows a wireless mesh of LMR (public safety) radios... do you (octoScope) antipcipate developing test equipment/software for LTE/LMR coexistence? the octoScope brochure calls it the DHS SBIR project

Author

for conducted testing, the filters are the same as for OTA, but for conducted tests isolation is not as critical since we take antennas off.

Author

Yes, getting a lab test setup that duplicates the wierd scenarios you find in the field is one of the big challenges of testing.

Author

I'm an EE and used to work in radio, and I'm still amazed that all my wireless devices work like they do. But after learning about modern test setups in today's presentaton, I only attribute 50% of it to magic. It used to be 90%.

Author

Thank you Fanny and Alex, I've enjoyed the topic and it has given me a nice introduction of things to look for.

Author

Q: page 9  What type of filters are applicable for conducted test? Can you give us an example (parameters of filter)? Thanks.

Author

Testing in the lab is obviously easier than in the field and creating a good teswtbed that exercises outdoor conditions well is of great value

Author

For what Fanny had listed for Deployment, we actually used to run as a validation step in R&D.

Author

the best case ifs when you can capture an dbring in outdoor real life environment into the lab

Author

R&D testing involves both Laboratory and field testing

Author

this is fine, but it's difficutl to get gigabit Ethernet and PoE this way

Author

yes - for feedthrough Ethernet filters, some manufacturers use electro-optical converters and guide a fiber optic cable through a waveguide in the wall of the chamber

Author

So BT is not normally effected by say noisy power lines and such?

Author

Q: page 16   Does R&D considering to run some experiments / tests at the field to capture any environment issues? Or R&D is doing only a lab testing?

Author

Excellent job!

Thank you.

Author

Bluetooth is susceptible to Wi-Fi interference because the networks are in the same band and because BT signal is much lower in power than Wi-Fi

Author

Thanks! Although I did not listen to all courses live, but I did get to all of them and learned a lot!

Author

I think I got the most out of this presentation compared to the others.  Maybe because it covered the biggest gaps in my knowlege of wireless design.

Author

controlled environment testing is evolving quickly and it's difficult to find high quality setups. That's one of the reasons octoScope entered the business of controlled environment testbeds.

Author

Question:  Is Bluetooth very suceptible to interference ? Is there a particular form of interference that is more troublesome? RF radiated sources, Electronic switching ? 

Author

Great informative sessions.  Thanks.

Author

Thank you so much! Great series.

 

 

Indeed. Much thanks, Fanny, for taking the time to share your knowledge with us. Thanks to EET, R&S, and Alex for helping it happen.

Author

Thanks for a great week.

Author

Thank you very much. The course contained many important technical foundations.

Thank You Fanny for the excelent presentation!

Thank you to Alex!

Thank you to EE Times University

Author

Thank you Fanny and Alex, great and useful information.

Author

Sure I've already looked at OctoScope site - very informative and interesting :)

Author

thanks much folks !

 

Author

Are most or all of the  test components and devices for the controlled environment testing readily available commercially? or do they need to be designed in-house, if so, which ones?

Author

Thank you, Fanny and Alex.

 

Author

Great Course! Thank you!

Author

Excellent presentation, Thx

Author

Can volume be truned up difficult to hear

 

Author

Thanks Fanny, great presentation.

Author

Thanks Fanny and Alex

Author

Thanks again for another great presentation

Author

Thanks for a brilliant series.

Author

Fanny Thank you for another GREAT presentation. 

Author

optical for Ethernet on both sides of a shield/screen room wall is fairly common/popular, but strictly data/control, no PoE which is the norm for an AP

Author

Check out the website for Ramesy: they have the most popular, reasonably priced shield boxes, and have lots of feed-thru connector/filter options...

Author

Analog RF Design Engineer

Author

What type of filters are applicable for conducted test (page 9)? Can you give us an example (parameters of filter)?

Author

Distributed Antenna Systems (DAS) widespread  for cellular in hospitals, which is primary location for Vocera VoWLAN deployments, and huge co-ex issue!

Author

Is optical ( + batteries inside ) used much for feed thru filters?

Author

Can you be specific about the type of filters?

Author

That was just and EXCELLENT introduction to feed through filters !!!

Author

If the actual world is not a controlled enviornment, is there any Basband algorithms that compensate for Antenna performance creating nulls or poor performance in any direction ?

Author

Please enter questions for Fanny

Author

EE - R&D - Developing proprietary wireless systems for mining applications

Author

medical devices in the past, no current project at this time except dev kit evaluations

Author

Embedded systems architect/engineer esp focusing on wireless

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Embedeed Applications R&D engineer, hardware and software. Working on wireless devices for diverse applications.

 

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Patent law. General interest in LTE/4G

 

Author

Electronics/Software/EMC Engineer

Design and manufacture wayside reporting equipment for railroad applications.

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Telecommunications Consulting Engineer

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EE doing hard ware and software design for RF, video monitors, switchers and test equipment

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R&D Renewable Energy monitoring

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ECE engineer

Project Leader - developing car management system

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EE Embedded design

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North Pole, not the North Pole

look it up in your research engineering

(search engine) ok

Author

Military ESM system project

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i am recent graduate and interest in embedded s/w and h/w 

Sr. Program Manager at Microsoft Windows Phone. Interested in Connectivity Solutions.

Author

Product Development Leadership electro-mechanical products

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Sell Connectivity solutions

 

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R&D Medical devices

 

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embedded software, drivers

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Hardware EE R&D, Test, embedded devices

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Embedded SW Engineer

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Hi from San Diego, CA!  Retired mechanical designer and currently a tinkerer

 

Author

Hello,

Benchmark Test Engineer

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Engineering Services

Silicon Valley, CA

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Military Systems - System Test

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Tektronix applications engineer

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hardware engineer from sydney

 

Author

Good day for Ottawa Canada

 

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Good morning: Isidro from CA

M2M Applications both H/w & S/W

Author

Here we go again!  Audio is up!!

Author

Hardware/Systems Eng. from NJ working for Space/Aerospace defense contractor

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Hi again from Munich. And before Alex asks. My discipline is EE and I work as a technical translator for Rohde & Schwarz (great company)!

Author

Good Morning everyone!

Author

Good morning, glad its atleast 49 here in CA

Author

Greetings from upstate New York! - light snow and 18 deg. F

 

Author

hello from sydney again

Author

Hey, Alaska IS big, but it doesn't extend to the North Pole!  Ya ain't kidding me!

Author

hi fanny gd afternoon..from uk

-25 Below, North Pole, Alaska, near Fairbanks

Author

Greetings from Boston (again).  Experiece: went through FCC testing for a non-intentional transmitter (circa 1999).  Equipment in-house: nada.  Cheers jb

Author

Hi, Hello from Oregon

Author
Good morning from San Jose, CA SW/HW R&D Engineer
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Good morning from Edmonton, AB.

Author

Good morning from Scottsdale

Author

Good Morning from GA. It's cold today.

Author

Very informative week session

Author


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NEXT UPCOMING BROADCAST
IoT Network Shoot Out
July 16, 1pm EDT Thursday

Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.

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