Chip antenna and method of manufacturing the same
AssigneeFurukawa Electric Co., Ltd.
InventorHiroki Hamada
Life of this patent
Estimating the term…
Abstract
A chip antenna is fabricated by forming a conductor plate having main and auxiliary antenna elements with a spacing therebetween which are connected through coupling portions to a frame surrounding the antenna elements, the conductor plate being embedded in or stacked on a dielectric chip and being cut along side faces of the dielectric chip. The main and auxiliary antenna elements have inner end edge portions that are opposed to each other over the entire width of the dielectric chip to provide a constant opposed area, suppressing a variation in antenna performance.
Claims14
A chip antenna comprising a main antenna element and an auxiliary passive antenna element that are embedded into or stacked on a dielectric chip, the improvement comprising:
- said main antenna element having a first main body and first expanding portions individually extending outwardly from both ends of an inner end edge portion of the first main body in a width direction of the chip antenna;
- said auxiliary antenna element having a second main body and second expanding portions individually extending outwardly from both ends of an inner end edge portion of the second main body in the width direction of the chip antenna;
- and
- said inner end edge portions of the main and auxiliary antenna elements, including the first and second expanding portions, respectively, being opposed to each other with a spacing therebetween in a lengthwise direction of the chip antenna.
A chip antenna manufacturing method, comprising:
- a first step of forming a conductor plate having a main antenna element that has a first main body and first expanding portions individually extending outwardly from both side ends of an inner end side portion of the first main body, an auxiliary passive antenna element that has a second main body and second expanding portions individually extending outwardly from both ends of an inner end side portion of the second main body, and a coupling portion that couples the main and auxiliary antenna elements to each other, with the inner end edge portions of these antenna elements opposed to each other with a spacing therebetween in a lengthwise direction of the chip antenna;
- a second step of embedding or stacking the conductor plate into or on a dielectric chip;
- and
- a third step of cutting off the coupling portion of the conductor plate from the main and auxiliary antenna elements of the conductor plate embedded into or stacked on the dielectric chip, to thereby cut off the main and auxiliary antenna elements from each other.
Dependencies are inferred from the claim text.