Hi,
I have created a Smith Chart Tutorial located here:
It is comprised of flash programs with embedded audio. It allows you to learn the smith chart through the interactive nature of the flash program.
I have completed three flash programs on this subject, and intend to write two more. The tutorial explains the smith chart, allows for capacitive/inductive matching and introduces how a transmision line affects the reflection coefficient.
Good Luck with this
Brent
This is very new and actual. Do you also have tutorial for a slide ruler?
VLV
Sno-o-o-o-ort ;-)
Somewhere around here I have a pamphlet I wrote up around 45 years ago on how to use a slide rule. I handed it out in a technician-level class I taught.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
Vladimir, Vladimir...
Think of the Smith chart as no different than a rectangular graph... just best used for somewhat different data types (reflection coefficients, complex impedances, VSWR, etc.). About the time that Excel removes rectangular graphs, RF test equipment and CAD programs will remove Smith charts. The use of a Smith chart for *design* purposes may be a bit anarchronistic, but the use of it to display results (or intermediate design steps) and do a bit of simple design is still quite useful...
Brent -- I did a bit of quick clicking around, and it looks pretty nice.
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Thanks.
I have always been a bit of a technology lagger compared to my peers. But as Jim Thompson can tell you, there is still money to be made in old technology.
Sno-o-o-ort ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
Nice educative tool. However, I would prefer to load audio just when needed, or even no audio at all and some text instead (I can read _much_ faster than listen -although this may not be the case of our youth...).
You may also have a look at
Pere
Don't diss the Smith chart. Case in point: Me flying many hours to a client. Some serious RF power problems there, I was told. So, I packed a stack of Smith charts. Since TSA did not allow compasses on account that they are considered a weapon I stopped at a Walmart off the freeway, bought a new plastic one for a buck. On to the hotel. Next morning, big meeting, crisis mode. Whipped out the charts, tried some matching scenarios until one looked almost ideal, tech soldered that together -> bingo, crisis was over.
At lunch they asked me how on earth I'd dunnit. With a Smith chart? A _what_? Only one Russian engineer vaguely remembered what that was but he hadn't used one since Mikhail Gorbatchev was president there. The manager asked me whether I could hold an impromptu tutorial on it after lunch. Sure. Saw some eyes becoming wider and wider ...
The best picture was a guy with a high-faluting tablet PC who could not solve the problem on that thing. During the lesson meeting he quietly shoved it onto a sideboard.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
Does anyone make a Smith Chart software? Would save a lot of paper, pencils, and erasers ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
Well, even my network analyzer has built-in Smith chart rendering and math capabilities. But nothing beats the old compass and pencil method. I usually keep it to less than a dozen sheets per project. Got to make sure there is a thick piece of wood underneath. Compass holes in a client's desk surface are not so cool and since I am often the only RF/analog guy they'd immediately know who dunnit.
One can easily overdo it with all this CAD. Our neighbor is a civil engineer and he spent days designing their tile layout on CAD. I just bought a $88 wet saw plus a $40 diamond blade, new safety goggles, and had at it.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
I don't know about that.
I drew up an accurate floor plan of the old house, overlaid the tile pattern, then slid it around until I minimized cuts and waste.
I'm sure you can do that on paper as well, but it was duck soup with CAD ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
Hmm... I wonder if those "cutting mats" would work here...
I've made various tiny dings in employers' desks, I suppose, although in all but one case it was pretty cheap furniture anyway. :-)
Our mechanical engineer designed his kids' playhouse (like a treehouse, but on the ground -- he has a small city lots without any trees big enough to properly support a treehouse) in Solidworks. Looks pretty cool, actually -- certainly better than what I could do just picking up some tools and having at it. When I was about 9 and my brother 11, he and I were going to build a treehouse, inspired by the next-door neighbor kids who had a *very cool*
*two-story* treehouse that they'd built (with lots of help from their dad). We only got as far as having about a 3'x3' platform up in the tree before we became bored and went off to do something else...Sorry for pulling this *way* off-topic.
Do kids in Germany have treehouses, Joerg?
---Joel
Same here, had to compromise between kitchen, entry, hallway, laundry, all connected. Nothing is right-angle in the living quarters, all oddball angles except for office and lab, one of those Jetson's style custom designs. Still, it was duck soup on paper as well :-)
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
Only "non-linearity" I had to deal with I mentioned before, a hallway that tapered about an inch from one end to the other, so I fudged the grout widths so it looked good to the eye.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
My sessions are often done in a board room. Very posh, even the coffee cups can easily be $50 a pop so it's best not to drop one.
Oh, you can do it without CAD. People did, for thousands of years :-)
Not as much as here because properties are very small there, plus lots of regulations about trees. I know of one case where they cut off a small branch and then the goons came.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
When I was in my teens and 20s I'd design a model airplane from scratch, with detailed drawings that were almost ready for publication, then I'd build to print and life was wonderful.
After I started working full time as an engineer, constantly jockeying with management to try to pry out enough time to do things well enough that it'd at least break in the field instead of the lab, I didn't have energy to design airplanes anymore.
Finally, about 10 years ago, I figured out how to just build from sketches. At least once in every design I paint myself into a corner, and I have to back up and do major modifications, so every plane has at least one crash-and-repair cycle before it's even covered. But at least I get planes built...
-- http://www.wescottdesign.com
In article , To-Email- snipped-for-privacy@My-Web-Site.com says...>
I did that for may master bath in the previous house. I laid out the floor joists, plywood, backer board, and tile all on separate levels, then "slid" the tile and backer levels around around until the seams were all in the right place (over joists or at least not over plywood seams where there weren't joists).
Yep. CAD made it a trivial job to align everything. ...and make it look good too.
I do that with vellum. Beats the computer most of the time, especially when considering the time to take off the work boots, the dusty overall, wash hands, etc. Else there'll be nasty dirt splotches all over the place and the missus very unhappy. Schlepping a laptop in there ain't cool either because it'll be full of dust afterwards.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
Clearly you schlep too much ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
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