[24] |
3.5 |
FR-4 |
Open-circuit coupled line and capacitor unit
cell |
550 |
70 × 73.7 |
[27] |
2.4 |
Rogers 4003C |
Circularly polarized (CP) |
900 |
170 ×
170 |
[37] |
2.44 |
FR-4 |
Without crossover |
200 |
96 ×
96 |
[38] |
2.5 |
FR-4 |
Open-stub and removal crossover |
200 |
115.18 ×
64.4 |
[39] |
2.5 |
FR-4 |
Two section branch line coupler |
400 |
120 ×
150 |
[40] |
1.8 |
ARLON |
Composite right/left handed CRLH-TL |
200 |
109
× 119 |
[41] |
6 |
Roger 4003C |
Mushroom-like |
2300 |
100
×110 |
[42] |
0.86 |
RT/duroid 5880 |
double spiral lines (SDSLs) |
150 |
109.0 × 89.3 |
[43] |
2.4 |
Plastic |
complimentary square split ring resonators
(CS-SRRs) |
300 |
154 × 117 |
This work
2023
|
3.5
|
RT/5880LZ
|
Triangular slot and T-shape
|
836
|
85.5 × 75
|