CSRR-LOADED MIMO ANTENNA SYSTEMS
First Claim
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1. A CSRR(complementary split-ring resonators)-loaded MIMO antenna system, comprising a printed circuit board (PCB) having:
- at least one pair of patch antenna elements on an upper substrate surface of the PCB, the patch antenna elements being co-aligned lengthwise in mirror-image fashion, each of the patch antenna elements being a substantially rectangular planar conductor having a substantially rectangular planar microstrip transmission line extending parallel to but offset from a centerline of the rectangular planar conductor towards an edge of the PCB;
a ground plane disposed on a lower substrate surface of the PCB; and
a plurality of complementary split-ring resonators (CSRRs) defined in the ground plane, each of the patch antenna elements having a corresponding one of the CSSRs centered directly beneath the patch antenna element, each of the resonators being concentric inner and outer split rings.
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Abstract
The CSRR-loaded MIMO antenna systems provide highly compact designs for multiple-input-multiple-output (MIMO) antennas for use in wireless mobile devices. Exemplary two element (2×1), and four element (2×2) MIMO antenna systems are disclosed in which complementary split-ring resonators load patch antennas elements. The overall dimensions of the exemplary MIMO antenna system designed for operation from 750 MHz to 6 GHz band remain within 100×50×0.8 mm2.
15 Citations
11 Claims
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1. A CSRR(complementary split-ring resonators)-loaded MIMO antenna system, comprising a printed circuit board (PCB) having:
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at least one pair of patch antenna elements on an upper substrate surface of the PCB, the patch antenna elements being co-aligned lengthwise in mirror-image fashion, each of the patch antenna elements being a substantially rectangular planar conductor having a substantially rectangular planar microstrip transmission line extending parallel to but offset from a centerline of the rectangular planar conductor towards an edge of the PCB; a ground plane disposed on a lower substrate surface of the PCB; and a plurality of complementary split-ring resonators (CSRRs) defined in the ground plane, each of the patch antenna elements having a corresponding one of the CSSRs centered directly beneath the patch antenna element, each of the resonators being concentric inner and outer split rings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification