HIGH-FREQUENCY MODULE
First Claim
1. A high-frequency module comprising:
- a first external connection terminal;
a second external connection terminal;
a filter section connected between the first external connection terminal and the second external connection terminal; and
a matching element connected between the filter section and at least one of the first external connection terminal and the second external connection terminal;
whereinthe filter section includes;
a first connection terminal connected to the first external connection terminal;
a second connection terminal connected to the second external connection terminal;
a plurality of first filter elements connected in series between the first connection terminal and the second connection terminal; and
a first inductor;
whereinthe first inductor is inductively coupled or capacitively coupled to the matching element, and the first inductor is connected in parallel to a first filter element, among the plurality of the first filter elements, that is different from the first filter element connected to the matching element.
1 Assignment
0 Petitions
Accused Products
Abstract
In a high frequency module, in addition to a main transmission path in which a high-frequency signal propagates in first filter elements, a sub transmission path is defined by inductive coupling or capacitive coupling between a first inductor and a matching element or by inductive coupling between the first inductor and a second inductor. The sub transmission path has different amplitude characteristics and phase characteristics from those of the main transmission path depending on a degree of the inductive coupling or capacitive coupling, and transmission characteristics as a high-frequency module are adjustable by adjusting the amplitude characteristics and the phase characteristics of the sub transmission path.
7 Citations
22 Claims
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1. A high-frequency module comprising:
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a first external connection terminal; a second external connection terminal; a filter section connected between the first external connection terminal and the second external connection terminal; and a matching element connected between the filter section and at least one of the first external connection terminal and the second external connection terminal;
whereinthe filter section includes; a first connection terminal connected to the first external connection terminal; a second connection terminal connected to the second external connection terminal; a plurality of first filter elements connected in series between the first connection terminal and the second connection terminal; and a first inductor;
whereinthe first inductor is inductively coupled or capacitively coupled to the matching element, and the first inductor is connected in parallel to a first filter element, among the plurality of the first filter elements, that is different from the first filter element connected to the matching element. - View Dependent Claims (3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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2. A high-frequency module comprising:
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a first external connection terminal; a second external connection terminal; a filter section connected between the first external connection terminal and the second external connection terminal; and a matching element connected between the filter section and at least one of the first external connection terminal and the second external connection terminal;
whereinthe filter section includes; a first connection terminal connected to the first external connection terminal; a second connection terminal connected to the second external connection terminal; a third connection terminal connected to a ground; a plurality of first filter elements connected in series between the first connection terminal and the second connection terminal; and a second filter element connected at one end to a connection line connecting the first connection terminal and at least one of the first filter elements, a connection line connecting the second connection terminal and at least one of the first filter elements, or a connection line connecting mutually-adjacent first filter elements, and connected at another end to the third connection terminal;
whereinthe high-frequency module further includes a first inductor connected in parallel to the first filter element; and a second inductor connected between the third connection terminal and the ground; and the first inductor and the second inductor are inductively coupled. - View Dependent Claims (8)
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Specification