Placement of antenna on circuit

[ckJJ]

Hi,

Does placement of antennas near other circuit components like inductors and crystal oscillators have an effect on the radiation efficiency and other performances of the antenna?

Thanks.

ckJJ

 

[throwaway18]

Metal objects near an antenna will have an effect on it, paticularly when the metal is in a direction that you want the antenna to radiate or when the metal is about a tenth of a wavelength or larger in size.

 

[heedavid]

Dear ckJJ,

To add on to what throwaway18 said, you have to consider the polarisation that you wish your antennas to radiate in. Unless of course, if you plan to place your components under the ground plane, e.g. patch antenna, then you can worry less.

Hope this helps,
Dave

 

[tomcat_x]

It may casue crosstalk between them .

The coupling is also character for it , and it may occur EMC problem .