Research Article
A Very Compact and Sharp Roll-Off Low-Pass Filter with Four Transmission Zeros
Table 1
Comparison with the reported LPFs.
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References |
RO (dB/GHz) | fc (GHz) | Stopband |
Ckt. size () | Up to (fc) | Demon. FBW (%) Rej. (dB) |
| [3] | 34 | 2.4 | 3.4 | 95,20 | 0.049 | [4] | 68 | 2.0 | 5 | 120,33.5 | Large | [5] | 130 | 1.8 | 3.4 | Unknown | 0.02 | [7] | 37 | 2.5 | 4.8 | 115,20 | 0.022 | [8] | 270 | 1.0 | 5.3 | 135,21.5 | Large | [11] | 95 | 0.5 | 9 | 140,20 | 0.022 | This work | 109.3 | 0.63 | 5 | 114,20 | 0.004 |
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RO: roll-off; Demon.: demonstrated; FBW: fractional bandwidth; Rej.: rejection level; Ckt.: circuit.
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