Communications: radio wave antennas – Antennas – With electrical shield
Reexamination Certificate
2011-04-19
2011-04-19
Choi, Jacob Y (Department: 2821)
Communications: radio wave antennas
Antennas
With electrical shield
Reexamination Certificate
active
07928923
ABSTRACT:
In an antenna apparatus, at least one choke in the form of a groove is arranged between a transmitting antenna and a receiving antenna. The choke functions to suppress the mutual electromagnetic coupling between the transmitting antenna and the receiving antenna. The depth of the choke is in a range from 0.15, to less than 0.225λ where λ is a wavelength of a carrier wave.
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Udagawa Shigeo
Yamaguchi Satoshi
Choi Jacob Y
Mitsubishi Electric Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Robinson Kyana R
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