| 摘要 |
PURPOSE:To provide an active phased array antenna which reduces losses by miniaturization of the circuit and has the whole of the circuit miniaturized and furthermore improves antenna characteristics. CONSTITUTION:An antenna unit has an antenna pattern 12 to be an antenna element formed on one face of a ceramic multilayered substrate 10 sintered at a low temperature. A feed point 14 of the antenna element is electrically connected to an HIC part 26 consisting of a high frequency amplifying IC chip 20, a chip capacitor 24, etc., through a conductor of a via hole 16, an inner conductor 18, a bonding wire 20, etc. A shielding inner conductor 28 is provided between an antenna element and an HIC part. Copper or silver materials are used as materials of the antenna element and conductors such as an inner conductor. Plural pins 30 for mechanical and electric connection to a mother board omitted in the figure are brazed on the ceramic multilayered substrate. Plural units obtained in this manner are attached to the mother board. |
