the bandwidth defined in handset

could anybody knows the defination of the bandwidth in handset?
is it below -10dB or -7.35db? or some else?
thanks!

Dear fishliker,
becouse of tight space limits in todays mobile handsets, often active antnnas is using in them. more printed small dipoles, or ok, PIFA, but all ofem with very low gain (becouse of bad matching). so, if you really want to have the definition, you should looking for gain conditions in the operating band.

+the europian standard for mid-cell BTS antenna is S11<-15.

ur friend, murti

-5 to -6 dB are good values for handsets antenna bandwidths (S11)

Hi,

Most handset pifas are designed with s11 < -6dB. It used to be s11<-10dB or vswr 1:2

Cheers,
Element7k

the band when p<2 will be ok.

external antenna : VSWR < 2
Internal antenna : VSWR < 3