Low-pass filter
First Claim
1. A surface-mounted low-pass filter, comprising:
- a mounting surface having an input terminal electrode, an output terminal electrode, and a ground terminal electrode;
a parallel resonant circuit between the input terminal electrode and the output terminal electrode; and
a series resonant circuit between one end of the parallel resonant circuit and the ground terminal electrode,wherein the series resonant circuit has a first capacitor and a first inductor,wherein, when the low-pass filter is viewed from above in a direction perpendicular to the mounting surface with the mounting surface on the bottom, the first inductor of the series resonant circuit is above the first capacitorwherein the parallel resonant circuit has a second capacitor and a second inductor, andwherein, when the low-pass filter is viewed from above in the direction perpendicular to the mounting surface, the first inductor of the series resonant circuit does not overlap the second inductor of the parallel resonant circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
In one aspect, the present disclosure provides a surface-mounted low-pass filter, including: a mounting surface having an input terminal electrode, an output terminal electrode, and a ground terminal electrode; a parallel resonant circuit between the input terminal electrode and the output terminal electrode; and a series resonant circuit between one end of the parallel resonant circuit and the ground terminal electrode, wherein the series resonant circuit has a first capacitor and a first inductor, and wherein, when the low-pass filter is viewed from above in a direction perpendicular to the mounting surface with the mounting surface on the bottom, the first inductor of the series resonant circuit is above the first capacitor.
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Citations
5 Claims
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1. A surface-mounted low-pass filter, comprising:
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a mounting surface having an input terminal electrode, an output terminal electrode, and a ground terminal electrode; a parallel resonant circuit between the input terminal electrode and the output terminal electrode; and a series resonant circuit between one end of the parallel resonant circuit and the ground terminal electrode, wherein the series resonant circuit has a first capacitor and a first inductor, wherein, when the low-pass filter is viewed from above in a direction perpendicular to the mounting surface with the mounting surface on the bottom, the first inductor of the series resonant circuit is above the first capacitor wherein the parallel resonant circuit has a second capacitor and a second inductor, and wherein, when the low-pass filter is viewed from above in the direction perpendicular to the mounting surface, the first inductor of the series resonant circuit does not overlap the second inductor of the parallel resonant circuit. - View Dependent Claims (2)
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3. A low-pass filter, comprising:
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a mounting surface having an input terminal electrode, an output terminal electrode, and a ground terminal electrode; a parallel resonant circuit between the input terminal electrode and the output terminal electrode; and a series resonant circuit between one end of the parallel resonant circuit and the ground terminal electrode, wherein the series resonant circuit has a first capacitor and a first inductor, wherein, when the low-pass filter is viewed from above in a direction perpendicular to the mounting surface with the mounting surface on the bottom, the first inductor of the series resonant circuit is above the first capacitor, and wherein two or more of the parallel resonant circuit are provided and connected in series between the input terminal electrode and the output terminal electrode, and the series resonant circuit is provided between the ground terminal electrode and a connection node at which two of said two or more parallel resonant circuits connect in series. - View Dependent Claims (4)
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5. A low-pass filter, comprising:
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a mounting surface having an input terminal electrode, an output terminal electrode, and a ground terminal electrode; a parallel resonant circuit between the input terminal electrode and the output terminal electrode; and a series resonant circuit between one end of the parallel resonant circuit and the ground terminal electrode, wherein the series resonant circuit has a first capacitor and a first inductor, wherein, when the low-pass filter is viewed from above in a direction perpendicular to the mounting surface with the mounting surface on the bottom, the first inductor of the series resonant circuit is above the first capacitor, and wherein N number of said parallel resonant circuit is provided and connected in series between the input terminal electrode and the output terminal electrode, and 1 to (N+1) number of said series resonant circuit is provided and each connected between said ground terminal or a separate ground terminal and one end of one of the (N+1) series resonance circuits, where N is an integer greater than or equal to 1.
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Specification