Directional coupler and wireless communication device
First Claim
1. A directional coupler comprising:
- a main line configured to transmit a high-frequency signal;
an input terminal disposed at one end of said main line configured to introduce the high-frequency signal into said main line;
an output terminal disposed at the other end of said main line configured to deliver the high-frequency signal from said main line;
a sub-line electromagnetically coupled to said main line configured to extract a portion of the high-frequency signal;
a coupling terminal disposed at one end of said sub-line; and
an isolation terminal disposed at the other end of said sub-line,said main line, said input terminal, said output terminal, said sub-line, said coupling terminal, and said isolation terminal being disposed within a laminate having a plurality of conductor layers laminated with an insulating layer disposed between respective ones of said conductor layers, wherein;
said main line includes a first main-line section formed on a first conductor layer within said plurality of conductor layers, and a second main-line section formed on a second conductor layer within said plurality of conductor layers;
said first main-line section and said second main-line section are electrically connected in parallel with each other between said input terminal and said output terminal;
said sub-line includes a first sub-line section formed on said first conductor layer, and a second sub-line section formed on said second conductor layer;
said first sub-line section and said second sub-line section are electrically connected in parallel with each other between said coupling terminal and said isolation terminal;
said first main-line section and said first sub-line section are disposed in close proximity to each other to generate electromagnetic coupling therebetween; and
said second main-line section and said second sub-line section are disposed in close proximity to each other to generate electromagnetic coupling therebetween.
1 Assignment
0 Petitions
Accused Products
Abstract
A directional coupler including a main line, a sub-line, an input terminal, an output terminal, a coupling terminal and an isolation terminal, wherein the main line includes a first main-line section formed on a first layer, and a second main-line section formed on a second layer; the first and the second main-line sections are connected in parallel between the input and the output terminals; the sub-line includes a first sub-line section formed on the first layer, and a second sub-line section formed on the second layer; the first and the second sub-line sections are connected in parallel between the coupling and the isolation terminals; the first main-line section and the first sub-line section are disposed in close proximity to each other to generate electromagnetic coupling; and the second main-line section and the second sub-line section are disposed in close proximity to each other to generate electromagnetic coupling.
14 Citations
16 Claims
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1. A directional coupler comprising:
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a main line configured to transmit a high-frequency signal; an input terminal disposed at one end of said main line configured to introduce the high-frequency signal into said main line; an output terminal disposed at the other end of said main line configured to deliver the high-frequency signal from said main line; a sub-line electromagnetically coupled to said main line configured to extract a portion of the high-frequency signal; a coupling terminal disposed at one end of said sub-line; and an isolation terminal disposed at the other end of said sub-line, said main line, said input terminal, said output terminal, said sub-line, said coupling terminal, and said isolation terminal being disposed within a laminate having a plurality of conductor layers laminated with an insulating layer disposed between respective ones of said conductor layers, wherein; said main line includes a first main-line section formed on a first conductor layer within said plurality of conductor layers, and a second main-line section formed on a second conductor layer within said plurality of conductor layers; said first main-line section and said second main-line section are electrically connected in parallel with each other between said input terminal and said output terminal; said sub-line includes a first sub-line section formed on said first conductor layer, and a second sub-line section formed on said second conductor layer; said first sub-line section and said second sub-line section are electrically connected in parallel with each other between said coupling terminal and said isolation terminal; said first main-line section and said first sub-line section are disposed in close proximity to each other to generate electromagnetic coupling therebetween; and said second main-line section and said second sub-line section are disposed in close proximity to each other to generate electromagnetic coupling therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification