| US 7,477,204 B2 | ||
| Printed circuit board based smart antenna | ||
| Teng-Chi Lin, Keelung (Taiwan); Ikuroh Ichitsubo, Kanagawa Prafecture (Japan); Guan-Wu Wang, Palo Alto, Calif. (US); and Weiping Wang, Palo Alto, Calif. (US) | ||
| Assigned to Micro-Mobio, Inc., Palo Alto, Calif. (US) | ||
| Filed on Dec. 30, 2005, as Appl. No. 11/323,776. | ||
| Prior Publication US 2007/0152903 A1, Jul. 05, 2007 | ||
| Int. Cl. H01Q 9/28 (2006.01) | ||
| U.S. Cl. 343—795 [343/818] | 12 Claims |
| 1. An electronic circuit, comprising:
a multi-layer substrate;
a plurality of antennas formed on a first surface of the substrate;
a plurality of switches, each coupled to one antenna in the antenna array;
a processor coupled to the switches to control the plurality of antennas and to optimize radio frequency characteristics of
the plurality of antennas;
a radio frequency (RF) circuit; and
a ground circuit border surrounding the RF circuit except for narrow openings for passing signal paths.
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