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# symbol of an equation in ADS.

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#### RAHIMRIO

##### Newbie
HI,
I have difficulty to understand a symbol of an equation in ADS. I don't know if it is a square root or not. If it is a square root, where can I find it in ADS.
Thank you.

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##### Super Moderator
Staff member
Looks like a Greek lower case mu. Another like it is on the second line.
µ
To type the above mu I pressed Option-m on my Macintosh.

Sorry, I'm all wet. A close-parenthesis merges with something that looks like a letter I.

All the text is such low resolution it's practically illegible. Does the program let you enlarge the entire schematic? Then the letters should become large and obvious.

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#### RAHIMRIO

##### Newbie
Thank you bradtherad for the advice, but i picked the picture from a pdf PL15-12+0.15µm+LN+pHEMT, so i can't enlarge it.

##### Super Moderator
Staff member
Your guess of square root is as good as any.

The schematic appears to be an LC filter. Perhaps one or more formulas are to do with resonant frequency? Say, a re-arrangement of the formula below?

F=1/(2 π √(LC))

Or the formula for reactive impedance? Etc.

#### RAHIMRIO

##### Newbie
It's a equivalent schematic of an inductance.
My problem is where i can find the symbol " √ " in ADS.

#### BigBoss

It's a equivalent schematic of an inductance.
My problem is where i can find the symbol " √ " in ADS.
There is no such character at all in ADS. You should use "sqrt" function.

#### RealAEL

I believe the expression is something including (W*1e6)/(W*1e6) or similar, so the symbol in the middle is a corruption of the division notation between close and then open parentheses.

That's the easy part. much of the rest is a mystery!

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