| 摘要 |
PROBLEM TO BE SOLVED: To attain further downsizing of a small-sized slot antenna in which a slot and a strip line are coupled in an electromagnetic manner.SOLUTION: In a small-sized slot type antenna 20, electromagnetic coupling type power supply is performed for supplying power not by an electrical connection but by electromagnetic coupling using a strip line 40. The strip line 40 includes: a first line part 41 extending in a length direction of a slot 21; and a second line part 42 that is connected with the first line part 41 and extends in a right-angle direction, and the first line part 41 is disposed within a projection region of the slot 21. The second line part 42 has one end side connected to the first line part 41 and has another end side connected to a high frequency circuit. The first line part 41 that is a distal end portion of the strip line 40 is disposed within the slot 21, thereby providing the small-sized slot type antenna. Further, on the basis of new knowledge that a resonant frequency f is reduced by forming the slit 22 from the slot 21 to a side of a metal substrate 11, further downsizing is implemented with respect to the same frequency.SELECTED DRAWING: Figure 1 |
