Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2008-05-06
2008-05-06
Mancuso, Huedung (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
Reexamination Certificate
active
10403492
ABSTRACT:
A miniature vertically polarized multi-frequency antenna10is embedded in a substrate11and suitable for use within a wireless device. The antenna10includes a first lateral member14and a second lateral member16, which is spaced from and parallel to the first lateral member14. The antenna10has a wide tuning range due to multiple resonances provided by the lateral members14, 16. The antenna10is shortened by reactive loading and by embedding the antenna in material having a high dielectric constant. Tuning circuits30, 32are coupled to respective ends of one of the lateral members14, 16. The tuning circuits are located on a common plane with the lateral member to which they are connected. The tuning circuits30, 32electronically add reactance to the antenna to alter the frequency at which it resonates. A method of providing the antenna10includes forming flat metal strips14, 16on layers of a laminated substrate11and forming the second lateral member16between adjacent layers20, 22of the substrate11.
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“Analysis of a Coaxially-fed Patch Antenna”, published Jul. 9, 1998, and found at the web site http://lc.cray.com/apps/pat/.
Bethards Charles W.
FreeScale Semiconductor, Inc.
Mancuso Huedung
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