Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-03-29
2005-03-29
Phan, Tho (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S702000
Reexamination Certificate
active
06873291
ABSTRACT:
A surface-mounted antenna comprising a substrate made of a high-dielectric constant material having a dielectric constant ∈rof 6 or more, a ribbon-shaped radiation electrode having one end which is grounded and the other end which is open, a grounding electrode connected or capacitance-coupled to one end of the radiation electrode, and a current-feeding electrode in a portal shape formed on a side surface separate from the radiation electrode with a gap; the current-feeding electrode having a current-feeding portion at one end, a grounding portion at the other end, and a portion substantially in alignment with the radiation electrode between them; and the length of the aligning portion, a gap width or a portal shape being able to be properly set such that capacitance owned by the current-feeding electrode and inductance can be adjusted for easily achieving impedance matching.
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European Search Report for EP 02 01 3156 completed Feb. 18, 2004.
Patent Abstracts of Japan vol. 2000, No. 13, Feb. 5, 2001 -& JP 2000 286615 A (NGK Insulators Ltd), Oct. 13, 2000 *abstract; figures 1,10*.
Aoyama Hiroyuki
Hagiwara Hidetoshi
Kikuchi Keiko
Takaki Yasunori
Hitachi Metals Ltd.
Phan Tho
Sughrue & Mion, PLLC
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