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Re: A rich knowledge source on battery technologies
eetcowie   8/11/2014 3:12:14 PM
prabhakar_deosthali : 

'...It would be nice to have all this content converted into a book.
Do you have any such plans?'

Many have asked me about writing a book, and I am still considering it. I'll make a final choice after I finish posting everything.

Thanks for your support.


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A rich knowledge source on battery technologies
prabhakar_deosthali   8/11/2014 3:31:11 AM
HI Ivan,


I have gone through most of your 10 part series on Battery technologies.

It would be nice to have all this content converted into a book.

Do you have any such plans?

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Re: I hate to rain on your parade, but...backscatter
eetcowie   8/8/2014 2:17:47 PM

I was doing backscatter communications when I worked at Time Domain. The available power is quite limited (in contrast to the author's statement), and obviously depends on the size of the antenna. It doesn't take much energy to short-out and open an antenna, to provide the reflection, and this is what I believe they were trying to say. The strength of the reflecting signal depends on: antenna size (gain), distance, path loss (other scatter sources and blocking materials), and noise (jammers, etc). By the way, backscatter comms works with other radio signals that are available, as well.

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Re: Availability
eetcowie   8/8/2014 2:06:00 PM
antedeluvian :  How would I go about obtaining one...

Sometimes I have to resort to a Google search using the chemistry as keyword, to reveal the as-yet unknown supplier. Too often, I don't even have a part number, and so this helps with that too. Additionally, There are companies out there that can make a pack out of cells that you supply, or they buy for you and include in the pack cost.

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antedeluvian   8/8/2014 9:08:23 AM
Hi Ivan

Let's say I thought one of the exotic battery chemistries that you cover in this series was suitable for my application. How would I go about obtaining one (or in the case of a primary battery an ongoing supply)? Do you make it yourself or are some battery manufacturers happy to put together one for you?

Max The Magnificent
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I hate to rain on your parade, but...
Max The Magnificent   8/7/2014 4:47:08 PM
@Ivan: Did you see this article about researchers promoting battery-free Wi-Fi technology?

As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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