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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMasahiro Yoshimoto, Kuniaki Kiyosue, Nobuaki Nagai, Tokuji Nishino, Shinichirou Kaneko
Estimating the term…
An electronic component of the invention has: a substrate; first to third terminal portions disposed on the substrate; and at least one spiral conductor portion disposed between the first and second terminal portions. The third terminal portion is not electrically connected to other portions of the substrate, and the first and second terminal portions are electrically connected to or disconnected from each other. In the electronic component, the number of production steps is smaller, the cost is lower, and a more highly accurate inductor component is realized as compared with a laminated electronic component in which emphasis is put on increase of the capacitor component. It is possible to realize an electronic component having accurate band- or low-pass filter characteristics.
A band-pass filter comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
With magnetic core: with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
Printed inductances: with the coil helically wound around a magnetic core
Constructional details: wound, ring or feed-through type inductor
Magnets
Term ended 26 Aug 2024 (estimated)
The present invention relates to an electronic component which is preferably used in, for example, an electronic apparatus conducting radio communication, such as a mobile communication terminal or a personal computer, and which compositely includes an inductor and a capacitor.
In a cordless telephone or a cellular telephone, in order to lower the cost and miniaturize the telephone, it is requested to reduce the sizes and number of components. In a portable electronic apparatus such as a notebook personal computer, data communication using a wireless LAN or the like is often conducted, and hence also components in such an electronic apparatus are requested to be reduced in size and number.
In such communication, an electronic component which compositely includes an inductor and a capacitor is necessary. Electronic components of this kind are often used as various filter circuits in a radio communication circuit for the purpose of selectively allowing a signal in a desired frequency band to pass therethrough, and attenuating an unwanted signal. Filters include a band-pass filter through which only a signal in a specific frequency band can be passed, a low-pass filter through which only a signal in a lower frequency band can be passed, and a high-pass filter through which only a signal in a higher frequency band can be passed.
FIGS. 1 to 3 are perspective views of electronic components of Embodiment 1 of the invention,
FIG. 4 is an equivalent circuit diagram of an electronic component of Embodiment 1 of the invention,
FIGS. 5A–5D are views showing results of simulations conducted in Embodiment 1 of the invention,
(Embodiment 1)
FIGS. 1 to 3 are perspective views of electronic components of Embodiment 1 of the invention, FIG. 4 is an equivalent circuit diagram of an electronic component of Embodiment 1 of the invention, and FIG. 5 is a view showing results of simulations conducted in Embodiment 1 of the invention.
Referring to FIG. 1, 1 denotes an electronic component, 2 denotes a substrate, 3a, 3b denote spiral conductor portions, 4a denotes a first groove portion, and 5a, 5b denote a first terminal portion and a second terminal portion, respectively.