Fig 1.
Geometry of the proposed single-port MS-based CP antenna.
P = 27.5, W0 = 27.1, h1 = h2 = 1.52, l1 = 37, w1 = 5, l2 = 21, w2 = 5, G = 20 (unit: mm).
Fig 2.
Simulated performance of different antennas.
(a) |S11|, (b) AR and realized gain.
Fig 3.
Geometry of the conventional and proposed MSs.
The dimensions of the conventional and proposed MSs are P = 27.5, W0 = 27.1, P1 = 22, W1 = 20, a1 = 1.7, a2 = 2.5 (unit: mm).
Fig 4.
Modal significance of (a) conventional MS and (b) proposed MS.
Fig 5.
Geometry of the proposed single-port MS-based CP antenna.
P1 = 22, W1 = 20, a1 = 1.7, a2 = 2.5, l1 = 13.2, w1 = 3.8, l2 = 13.4, w2 = 4, G = 12.4 (unit: mm).
Fig 6.
Simulated performance of the proposed MS-based antenna with size miniaturization.
Fig 7.
Geometry of the proposed single-port MS-based CP antenna.
P1 = 22, W1 = 20.3, a1 = 1.9, a2 = 2.5, l1 = 12, w1 = 3, s = 6, w2 = 1.2, G1 = G2 = 12 (unit: mm).
Fig 8.
Simulated (a) S-parameter, (b) AR and gain, (c) ECC of the proposed antenna.
Fig 9.
Simulated current distributions on the patch at 2.46 GHz with and without MS.
Fig 10.
Simulated current distributions on the patch at different frequencies.
Fig 11.
Simulated (a) |S11| and (b) |S21| of the proposed antenna for different values of G2.
Fig 12.
Simulated (a) |S11| and (b) |S21| of the proposed antenna for different values of s.
Fig 13.
Photographs of the fabricated antenna prototype.
Fig 14.
Simulated and measured S-parameter of the proposed antenna.
Fig 15.
Simulated and measured AR and gain of the proposed antenna.
Fig 16.
Simulated and measured radiation patterns at 2.46 GHz.
Table 1.
Performance comparison among co-aperture dual-sense CP antennas.