| US 7,498,993 B1 | ||
| Multi-band cellular antenna | ||
| Kwan-ho Lee, Ann Arbor, Mich. (US); Wladimiro Villarroel, Ypsilanti, Mich. (US); Nuttawit Surittikul, Ann Arbor, Mich. (US); and Jesus Gedde, Ann Arbor, Mich. (US) | ||
| Assigned to AGC Automotive Americas R&D Inc., Ypsilanti, Mich. (US) | ||
| Filed on Oct. 18, 2007, as Appl. No. 11/874,709. | ||
| Int. Cl. H01Q 1/32 (2006.01) | ||
| U.S. Cl. 343—713 [343/810] | 25 Claims |
| 1. A window having an integrated antenna for dual band operation at a first frequency band and a second frequency band, said
window comprising:
a nonconductive pane;
a first antenna element disposed on said nonconductive pane and having a first radiating element and a second radiating element
arranged together in an opposing relationship to form a first bowtie shape;
a second antenna element disposed on said nonconductive pane and spaced from said first antenna element, said second antenna
element having a third radiating element and a fourth radiating element arranged together in an opposing relationship to form
a second bowtie shape with a different dimension than said first bowtie shape; and
a first trace element connected to and extending between said first and third radiating elements and a second trace element
connected to and extending between said second and fourth radiating elements, both of said trace elements establishing an
electromagnetic coupling for said dual band operation.
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