ANTENNA DEVICE

• Main Authors: TAKAHASHI TAKESHI, SUZUKI MASAHITO, SHIOZAKI RYOSUKE, KASHINO YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

PROBLEM TO BE SOLVED: To reduce multireflection of an electromagnetic wave generated between a cover member and an antenna device, and to reduce variation in detection performance of a radar device.SOLUTION: An antenna device 10 comprises: a substrate 11; an antenna element 12 arranged on one surface 11a of the substrate 11, and that transmits/receives an electromagnetic wave; a resonance element 13 arranged at a position different from that of the antenna element 12, on the one surface 11a of the substrate 11, and that receives the electromagnetic wave; and a resistor 15 electrically connected with the resonance element 13 via a transmission line 14, and that consumes power at a resonance frequency of the resonance element 13.SELECTED DRAWING: Figure 3 【課題】カバー部材とアンテナ装置との間で発生する電磁波の多重反射を低減し、レーダ装置の検知性能のバラつきを低減する。【解決手段】アンテナ装置１０は、基板１１と、基板１１の一方の面１１ａに配置され、電磁波の送受信を行うアンテナ素子１２と、基板１１の一方の面１１ａにおけるアンテナ素子１２とは異なる位置に配置され、電磁波の受信を行う共振素子１３と、共振素子１３に伝送線路１４を介して電気的に接続され、共振素子１３の共振周波数において電力を消費させる抵抗１５とを備える。【選択図】図３