Surface-mount antenna and communication apparatus using the same
AssigneeMurata Manufacturing Co., Ltd.
InventorsShoji Nagumo, Nobuhito Tsubaki, Kazunari Kawahata
Life of this patent
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Abstract
A surface-mount antenna includes a dielectric substrate having a rectangular parallelepiped shape and a radiation electrode having a meandering pattern disposed on the surface of the dielectric substrate. The radiation electrode includes at least two meandering electrode units formed with different meander pitches, the at least two meandering electrode units being connected in series, and the radiation electrode being formed over at least two faces among a front face, a major surface, and a end surface of the dielectric substrate. With the above-described construction, the radiation electrode is allowed to transmit and receive electromagnetic waves in at least two different frequency bands.
Claims7
A surface-mount antenna, comprising:
- a dielectric substrate in a rectangular parallelepiped shape and including a first major surface, a second major surface, a first side surface, a second side surface, a first end surface and a second end surface;
- a radiation electrode having a meandering pattern disposed on at least two surfaces among the first major surface, the first side surface and the second side surface of the dielectric substrate and comprising at least a first meandering electrode unit and a second meandering electrode unit being connected in series;
- and
- the first meandering electrode unit having first meander pitches and the second meandering electrode unit having second meander pitches which are narrower than the first pitches;
- whereby the radiation electrode is allowed to transmit and receive electromagnetic waves in at least two different frequency bands.
A communication apparatus comprising at least one of a transmitter and a receiver, and further comprising a surface-mount antenna mounted on a circuit substrate, the surface-mount antenna comprising:
- a dielectric substrate in a rectangular parallelepiped shape and including a first major surface, a second major surface, a first side surface, a second side surface, a first end surface and a second end surface;
- a radiation electrode having a meandering pattern disposed on at least two surfaces among the first major surface, the first side surface and the second side surface of the dielectric substrate and comprising at least a first meandering electrode unit and a second meandering electrode unit being connected in series;
- and
- the first meandering electrode unit having first meander pitches and the second meandering electrode unit having second meander pitches which are narrower than the first pitches;
- whereby the radiation electrode is allowed to transmit and receive electromagnetic waves in at least two different frequency bands.
Dependencies are inferred from the claim text.