Substrate type antenna
AssigneeNissei Kabushiki Kaisha
InventorsTsutomu KANEKO, Takahisa KARAKAMA
Life of this patent
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Abstract
A substrate type antenna for conducting signal transmitting/receiving with using two (2) antennas, each having almost same resonance frequency, wherein each of those two (2) antennas applies therein a spiral antenna having an antenna side coupling pattern, which is positioned to face to a power supply point side coupling patter, and a spiral antenna having a spiral antenna pattern, which is coupled to the antenna side coupling pattern, and wherein those two (2) antennas are positioned in such a manner that extending directions of the facing end portions, being closest to each other in the spiral antenna patterns of those two (2) antennas, are not aligned to each other, but are shifted in different directions.
Claims9
A substrate type antenna for conducting signal transmitting/receiving with using two (2) antennas, each having almost same resonance frequency, wherein each of those two (2) antennas applies therein a spiral antenna having an antenna side coupling pattern, which is positioned to face to a power supply point side coupling patter, and a spiral antenna having a spiral antenna pattern, which is coupled to said antenna side coupling pattern, and wherein those two (2) antennas are positioned in such a manner that extending directions of the facing end portions, being closest to each other in said spiral antenna patterns of those two (2) antennas, are not aligned to each other, but are shifted in different directions.
Dependencies are inferred from the claim text.