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# Equation to calculate microstrip feed line

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#### ice.deepcold

##### Junior Member level 1
feed line equation

Hello,
Is there an equation to calculate the feed line of a rectangular microstrip path either for a 50 or 100 ohms.

thank you very much

Re: Microstrip feed line

here are two examples

chemandy.com/calculators/microstrip_transmission_line_calculator.htm
chemandy.com/calculators/microstrip_transmission_line_calculator_IPC_2141.htm

Re: Microstrip feed line

thanks
but I'm looking at something that has formulas and i want to calculate the width of the feed line not the square patch.

Thanks

Re: Microstrip feed line

ice.deepcold said:
thanks
but I'm looking at something that has formulas and i want to calculate the width of the feed line not the square patch.

Thanks
hi balanis antena theory book thay have give example problem

parthaucp

### parthaucp

Points: 2
Re: Microstrip feed line

REally!
what frequency are u using for ur example?

Re: Microstrip feed line

ice.deepcold said:
REally!
what frequency are u using for ur example?
10GHz

ice.deepcold said:
REally!
what frequency are u using for ur example?
how to find air gap width for a batch antenna feed any way?or formula or thump rule?

Re: Microstrip feed line

In what section of the balanis book is the formula to calculate the width of the feed line.

thank uuu

Microstrip feed line

Check Pozar's Microwave Engineering book, any edition.

Re: Microstrip feed line

ice.deepcold said:
In what section of the balanis book is the formula to calculate the width of the feed line.

thank uuu
chapter14

Hello Sundar,
I got the problem which you told in balanis. But how do u calculate g12? bcoz that is required or calculating the feed point.

Re: Microstrip feed line

hi balanis antena theory book thay have give example problem

is it this equation valid for half wave dipole microstrip antenna?

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