What is the relation between width and power of rect patch antenna?

  • Thread starter everjordan
  • Start date
  • #1
Hi, all

I want to control the power ratio of my series array antenna.

I heard there is some relation between width of rectangular patch antenna and power
to control the power ratio.

I want to know..

Do you know some relation?
 

Answers and Replies

  • #2
1,679
3
What is a series array antenna?

What is a power ratio?

I have professional experience designing antennas but I am not familiar with this terminology.
 
  • #3
Series array antenna means series fed antenna.
I mis choose the words.
I'm not good at english.

I'm designing 6x1 series fed rectangular patch antenna.
And I want to obtain low side lobe level.
But my design result is poor.
So, I use dolph-chebyshev array.
And, I obtain some coefficient.
But I don't know the meaning of these coefficient.
I think these coefficent are related to the power.
And, I heard the power is related to the width of patch antenna.
So, I use the word power ratio.
 
  • #4
1,679
3
No, the size and shape are related to the frequency and bandwidth. There is an upper power limit for an any antenna but I'm sure you aren't there yet.

What's your frequency, bandwidth, directivity, polarization, and input power? If all you want is more power, just crank up the input power.
 
  • #5
Thank you for reply my problem.
I am designing my antenna using Hfss11.
Im only focus on realized gain to inrease the sidelobe level at phi=90. and main beam is located between 0 and 5 degree.
Operating frequency is 26Ghz.
Ok. Anyway.. What is the meaning of dolph-chebyshev coefficent?
Until now, I think it is related width of patch antenna.
How I apply these coefficient to my antenna? I really dont know.
 
  • #6
1,679
3
It means if you adjust the amplitude of each patch by the array coefficient it will reduce your side-lobes the way you want.

You don't do this by changing the size of the patch, you do it with a power divider/attenuator network feeding the patches.
 
  • #7
Really?
I think if I adjust the size of each patch, it will reduce side lobes...
Okay.. Thank you!
 

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