Onboard antenna and home appliance

Abstract

This application discloses an onboard antenna and a home appliance device. The onboard antenna features a first radiating patch comprising a first radiating section and a second radiating section, with a first gap between them. The first and second radiating sections are electrically connected via a first lumped element connected across the first gap. This first lumped element introduces capacitive or inductive loading, lowering the equivalent resonant frequency of the onboard antenna and allowing its physical size to exceed the theoretical 1 / 4 wavelength limit at the same operating frequency. Furthermore, the first gap between the first and second radiating sections forms a coupling structure between the feed point and the ground point, extending the equivalent electrical length and further reducing the antenna size, thus achieving miniaturization of the onboard antenna. In addition, by changing the electrical parameters of the first lumped element, the resonant frequency of the onboard antenna can be flexibly adjusted without redesigning or fabricating the substrate, reducing development costs and shortening the debugging cycle.

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