US 8,283,990 B2Granted

Signal transmission communication unit and coupler

AssigneeMurata Manufacturing Co., Ltd.

InventorsNobuyuki Tenno, Masanori Tsuji, Hiroshi Mifune

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Abstract

This disclosure provides a signal transmission communication unit and a coupler that can occupy a small area and have a reduced thickness. The signal transmission communication unit includes a base component including a signal transmission line and a ground electrode, a coupling planar conductor parallel to the base component and having a planar shape, an inductor circuit connected between the coupling planar conductor and the signal transmission line, and an LC-series circuits between part of the coupling planar conductor and the ground electrode and including a capacitor and an inductor connected in series. The inductor circuit is provided between the coupling planar conductor and the base component, and the LC-series connected circuit is provided between the coupling planar conductor and the base component.

Claims21

Dependent claims

A signal transmission communication unit comprising:

a base component including a signal transmission line and a ground electrode;
a coupling planar conductor parallel to the base component and having a planar shape;
an inductor circuit connected between the coupling planar conductor and the signal transmission line;
and
an LC-series circuit connected between part of the coupling planar conductor and the ground electrode and including a capacitor and an inductor connected in series,
wherein the inductor circuit is arranged between the coupling planar conductor and the base component,
the LC-series circuit is arranged between the coupling planar conductor and the base component, the capacitor includes first and second facing conductors, the first facing conductor being a portion of the coupling planar conductor, and inductor is connected between the second facing conductor and the ground electrode.

4 more elements

Dependencies are inferred from the claim text.