types of omni directional antenna

dear sir/madam,
please tell the types of omni directional antenna for mobile application

check these information

https://www.ncjrs.gov/pdffiles1/nij/185030b.pdf
http://infoscience.epfl.ch/record/14...t_antennas.pdf
http://www.sanjayagurung.com/allfile...munication.pdf
2.4 GHz Access Point Omni Directional Antenna series | 2.4-2.5 GHz , 5dBi
http://www.kathrein.pl/down/BasicAntenna.pdf
http://www.ti.com/lit/an/swra161b/swra161b.pdf

KATHREIN-Werke KG, Antennas for mobile communication
kathrein have products you need

hi
as i know Kathrine design antenna for BTS not for mobile
usually microstrip antenna at that frequency are omnidirectional
u can read broad band microstip antenna by kin lu wong
or planer antenna for wireless by kin LU WONG