Antenna formed of multiple dielectric substrates including shielded LC filter
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United States of America Patent
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-
Apr 27, 1999
Grant Date -
N/A
app pub date -
Apr 24, 1995
filing date -
May 20, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An antenna device has an antenna part and a filter part combined into a single unit. The antenna part has a radiating electrode formed on a surface of layered dielectric substrates and a grounding electrode formed inside the layered structure. The filter part is formed below the antenna part and includes shield electrodes, capacitor electrodes and coil electrodes. A feed point on the antenna part and an input section of the filter part are electrically connected to each other through a roughhole, and external electrodes are formed on side surfaces of the multi-layered structure of the dielectric substrates, connecting the grounding electrode of the antenna part and the output section of the filter part. A slot electrode having a slot formed therethrough and a strip line extending perpendicularly to the slot may be inserted between the radiating electrode and the grounding electrode of the antenna part.
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