Portable wireless unit

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S129000, C455S562100, C343S70000R, C343S702000

Reexamination Certificate

active

06856819

ABSTRACT:
A portable wireless unit of the invention has a first plane antenna smaller than an antenna size determined by a desired frequency, and a second plane antenna presenting an antenna size determined by the desired frequency on the whole by coupling with the first plane antenna.

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K. Fujimoto, Y. Yamada, K. Tsunekawa, “ZUKAI Mobile Communications Antenna System”, p. 126, Fig. (f), Sougou-Denshi-Sha.
Arai et al., “A Design of Uni-directional Potable Terminal Antenna and Effect of Phantom”, SB-1-12 (1999), p. 652.
Shinji Sakai, et al., “Miniaturization of Parasitic Element for Radiation Gain Enhancement of Small Antenna”, Mitsubishi Materials Corp. (1998).

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