how to enhance microstrip patch antenna gain

Status
Not open for further replies.
B

bharat.awril

Newbie level 3
Joined
Jan 22, 2014
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
25
hi there !!

i've designed a microstrip patch antenna having a gain 4.203 dBi, directivity 7.6 dBi, return loss -33.9 dBi, centre frequency 2.668 GHz,
i want to enhance the gain a bit more, what should i do???
 

Re: how to enhabce microstrip patch antenna gain

Do you have ground plane restriction?
 

Re: how to enhabce microstrip patch antenna gain

Try adding a superstrate(a substrate) placed on top of the patch antenna. The superstrate preferably has to be thin with a high Dk.
 

Re: how to enhabce microstrip patch antenna gain

- What subtrate are you using? Can you use substrate with lower loss (loss tangent)?
- You can try to increase the width of the antenna.
- Try to increase the height of the substrate.
 

Re: how to enhabce microstrip patch antenna gain

Hi
what about if you use cavity-backed technique. this will prevent back lobe radiation and hence increase the antenna gain unless you want the back radiation.
regards
 

Interesting. And what is cavity depth for cavity-backed technique? Quarterwave in air?
 

S11 is good, thickness of substrate is ???
 

how about adding dielectric lenses above each patch? it must give better directivity
 

check this article " D. Sievenpiper, H. P. Hsu, “Low-profile cavity-backed crossed-slot antenna with a single-probe feed designed for 2.34-GHz satellite radio applications," IEEE Transactions on Antenna and Propagation, vol. 52, mo. 3, pp. 873-879, March 2004..""

it includes good info related to your inquire
regards

- - - Updated - - -

check this article " D. Sievenpiper, H. P. Hsu, “Low-profile cavity-backed crossed-slot antenna with a single-probe feed designed for 2.34-GHz satellite radio applications," IEEE Transactions on Antenna and Propagation, vol. 52, mo. 3, pp. 873-879, March 2004..""

it includes good info related to your inquire
regards
Terminator3 said:
Interesting. And what is cavity depth for cavity-backed technique? Quarterwave in air?
Click to expand...
 

You can also try to use a parasitic patch over your own to enhance the gain.

Check: "Enhanced Gain Patch Antenna With a Rectangular Loop Shaped Parasitic Radiator"
Yildirim, B. and Cetiner, B.A.
Antennas and Wireless Propagation Letters, IEEE (Volume:7 )
Page(s): 229 - 232
25 April 2008
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…