REQ:some info on types of antennas in mobile handsets

hello all!
i want some info on types of antennas in mobile handsets and how they work.
thanx
regrads
daniz40

there are several types of antennas that are used in mobile handsets such as helical antennas and inverted F antenna.

I don't understand what do you mean by how they work? do you mean how to design them?

yes i mean how to design them.
can u provide me some documents on the types of antennas used in the mobile handsets. thanx

I don't have a document talking particularly about mobile antennas, however you may search on the internet for papers,

Concerining the design, for the helical antennas you will find very good design data in jonson's antenna handook, and in "antennas" by kraus

the inverted F antenna is relatively new, thus you may need to search for papers about it

regards,
adel

2 pdf examp. att.