Patent ID: 9406998
Filing Date: 2016-08-02
CPC Classification: H01Q

Claim Text:
1. A multiband antenna assembly comprising a lower and an upper operating frequency band, the multiband antenna assembly for use in a mobile radio device, the multiband antenna assembly comprising: a substrate element comprised of a first end and a second opposing end, the substrate element comprising a conductive coating disposed thereon to form a ground plane, the conductive coating substantially covering the substrate element and extending from the first end towards the second opposing end, a portion of the second opposing end is exposed to form a clearance area without the conductive coating disposed thereon; a planar inverted-F antenna (PIFA) element configured to operate in the upper frequency band and being disposed above the ground plane and proximate to the first end of the substrate element; a monopole antenna configured to operate in the lower frequency band and being disposed proximate to the clearance area of the second opposing end, the clearance area configured to provide electrical isolation of the monopole antenna from the PIFA element, and further configured to reduce a ground plane clearance; and a feed apparatus configured to feed the monopole antenna and the PIFA element; wherein the monopole antenna further comprises: a matching circuit comprising: wherein the PIFA element further comprises: wherein a total efficiency for the multiband antenna assembly disposed proximate a head and a hand phantom is greater than 2.5 dB better in the upper frequency band as compared with a bottom mounted monopole antenna.