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A Single-Layer Miniaturized Patch Antenna Based on Coupled Microstrips
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DOI：10.1109/LAWP.2021.3064908.png)
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Abstract
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A new method to miniaturize patch antennas is presented by using coupled microstrip patches. A design example is given at 8.45 GHz. The resultant patch antenna has an electrical size of 0.146 x 0.146 x 0.04 lambda(3)(0), which is about 60% area reduction with respect to a conventional patch antenna. The miniaturized patch antenna shows similar broadside radiation patterns and a lower cross-polarization level as compared with the conventional one. It exhibits a realized gain of 5.4 dBi with the half-power beamwidths of 107 degrees in the E-plane and 87 degrees in the H-plane, respectively. Both simulated and measured results demonstrate that the miniaturized patch antenna exhibits excellent impedance and radiation characteristics and is a promising candidate for highly integrated wireless systems.
Keywords:
Patch antennas
Antennas
Microstrip
Antenna radiation patterns
Microstrip antennas
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Magnetic resonance
Coupled lines
microstrip antennas
miniaturized antennas
slow wave
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