Table 3 Comparison of the different imaging system with the proposed one.
Investigator | Antenna Type | Freq. (GHz) | Elements/Position | Fixed/Movable | Frequency/Time domain | Imaging Method | Phantom and tumor object |
|---|---|---|---|---|---|---|---|
Slotted patch | 3.5–15 | 4 × 4 Single element | Fixed Switching Matrix | Frequency domain | Confocal Imaging | Simulated phantom Yes | |
UWB transceiver | 3–10 | 16 Element arrays | Fixed Switching Matrix | Time-domain | DAS Simulation only | No No No | |
CPW feed Monopole | 2–4 | 16 Elements array 16 × 15 scanned position | Fixed Switching Matrix | Time-domain | DMAS | Yes Yes Single | |
Slotted antipodal Vivaldi antenna | 3.01–11 | Two elements 2 × 50 position | Fixed Platform rotated | Time-domain | DMAS | Yes Yes Single | |
UWB Flexible antenna | 4–6 | 2 Element arrays | Fixed | Frequency domain | DMAS | Commercial Single | |
UWB antenna | 3.1–10.6 | 16 Element arrays | Movable | Time domain | Confocal Imaging | Patient single | |
Balanced antipodal Vivaldi antenna | 1–13 | 36 Single element scanned position | Fixed Tank Rotate monostatic | Frequency domain | TSAR (Tissue Sensing Adaptive Radar) | Sample Tissue No | |
Tapered and transmission loaded antenna | 2–8 | 16 element Array 16 × 15 scanned position | Fixed Switching Matrix | Time-domain | DMAS (Delay Multiply and Sum Algorithm) | Lab-based breast phantom Yes Single | |
CPW feed EBG structure Antenna | 3.1–7.6 | 2 antenna elements 2 × 120 scanned position | Fixed Platform rotated | Frequency Domain | DMAS | Commercial phantoms Single tumor object | |
Antipodal Vivaldi | 2.5–11 | 9 antenna arrays 8 × 50 position | Movable | Frequency Domain | IC-CF-DAS | Lab made Multiple object | |
Proposed | Index Near-Zero Metasurface Loaded High Gain Antenna | 2.7–8.0 | 16 antenna arrays 64 × 50 scanned position | Movable multistatic | Time and Frequency Domain | IC-DMAS | Lab-made realistic heterogeneous phantom 1, 2 tumor objects |
