| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing microchip antenna in which the central frequency shift of a reflection loss can be adjusted over wide multiple frequencies. SOLUTION: On a dielectric substrate 1 such as a printed circuit board (PCB), a plastic plate, a resin plate, a composite material of ceramic and resin, ceramic plate, and a chip, a conduction circuit 2 of an antenna is manufactured by a system of various combinations of exposure, development, etching, plating and nonplating. The conduction circuit 2 passes up to a soldering point 3 (i. e. feed terminal) on the other side of the dielectric substrate 1. Alternatively, an elongating conduction circuit is made by boring the dielectric substrate 1 and the length of a conductor is increased. Subsequently, the conduction circuit is coated and sealed with a composite material 4 of resin and ceramic having a different specific dielectric constant (i. e. coating material for sealing) by such a technology system as injection, model injection, thick film printing, dot printing, transfer printing, or multilayer superposition. A means for adjusting the central frequency of the reflection loss of an antenna can be attained by altering the dielectric constant of the composite material of resin and ceramic easily. COPYRIGHT: (C)2006,JPO&NCIPI
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