The present invention is a retractable/extendable diversity antenna that provides the appropriate polarization in a horizontal orientation. The antenna structure is placed within a Type II PCMCIA PC card package and may be extended or retracted with one touch. The antenna structure is large enough to...http://www.google.es/patents/US6545643?utm_source=gb-gplus-sharePatente US6545643 - Extendable planar diversity antenna