Figure - available from: Microwave and Optical Technology Letters
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(A) Photograph of the three‐port substrate integrated waveguide (SIW) filtering multiple‐input multiple‐output (MIMO) magnetic dipole antenna, (B) reflection coefficients and gains varying with frequencies of the antenna element 1, (C) isolation, (D) envelope correlation coefficient (ECC), (E) E‐plane radiation pattern, (F) H‐plane radiation pattern.
Source publication
A compact substrate‐integrated waveguide (SIW) filtering multiple‐input multiple‐output magnetic dipole antenna with high selectivity and high isolation is proposed. Each filtering antenna element contains a SIW cavity, a half‐mode SIW cavity, and a magnetic dipole antenna with backed ground. Meanwhile, the SIW cavity and the half‐mode SIW cavity a...
Citations
... To overcome these issues multiple-input-multiple-output (MIMO) technology are used to alleviate or avoid the operation constraints. 4,5 In MIMO systems, mutual coupling or isolation characteristics is one of the most important and challenging tasks as it greatly affects the radiation performance of all the radiators as well as the input impedance. Several techniques have been devoted to tackle this issue. ...
A novel simple decoupling technique is proposed to suppress the mutual coupling of a millimeter‐wave multiple‐input‐multiple‐output dielectric resonator antenna (DRA). The design to be decoupled consists of two microstrip‐line fed rectangular DRAs placed side‐by‐side on an RT‐Duroid substrate and operates near 26 GHz. First, the DRAs are placed at an appropriate separation distance to avoid any close coupling. Second, to reduce coupling further, a set of square ring cell loaded slot is employed on the ground plane in between the DRAs. These two arrangements together, potentially reduce the mutual coupling between the DR elements and substantially improves the in‐band isolation from 14 to 23 dB (min)/34 dB (max) between them. The design is very simple, compact, and easy to fabricate. The model is prototyped and characterized to demonstrate its feasibility for operation. This can be a suitable technique for fifth‐generation compact handheld microwave devices.
