| CPC H01Q 9/045 (2013.01) [H01Q 1/12 (2013.01); H01Q 21/065 (2013.01)] | 18 Claims |
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1. A flexible substrate having a plate shape, comprising:
a first surface;
a second surface opposed to the first surface; and
a first line provided on the first surface or in a layer between the first surface and the second surface;
a second line provided on the second surface or in a layer between the second surface and the first line; and
a ground electrode provided in a layer between the first line and the second line so as to extend in the layer between the first surface and the second surface,
wherein the ground electrode forms a first radio frequency transmission line together with the first line and forms a second radio frequency transmission line together with the second line, and
under a condition the flexible substrate is seen through from a thickness direction of the flexible substrate, the first line has a line-symmetrical portion that is line-symmetrical with respect to the second line with a virtual intermediate line between the first line and the second line serving as a symmetric line,
wherein the first line and the second line have portions intersecting each other under a condition the flexible substrate is seen through from the thickness direction of the flexible substrate, and
wherein the ground electrode includes
a first ground electrode and a second ground electrode that are aligned and arranged in the thickness direction of the flexible substrate, and
a via that electrically connects the first ground electrode to the second ground electrode.
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