Open Access
Table 2
Performance comparison of previously reported attenuators based on CVD-grown graphene.
| References | |S 21| (dB) | |S 11| (dB) | Frequency band (GHz) | Structure | The function of GSSs in attenuator |
|---|---|---|---|---|---|
| Ref. [18] | 2–15 | <−15 dB | 7–14.5 | Two GSSs + SIW | Dissipate the EM field inside the SIW |
| Ref. [19] | 3–14 | <−20 dB | 7.7–19 | A GSS + HMSIW | Dissipate the fringe EM field of HMSIW |
| Ref. [20] | 3–15 | <−15 dB | 9–40 | Two GSSs + Microstrip | Dissipate the fringe EM field on both sides of microstrip line |
| Ref. [21] | 3–15 | <−16 dB | 9–40 | A GSS + CPW | Dissipate the EM field around the slot coupled to the GSS |
| Ref. [21] | 3–15 | <−15 dB | 9–40 | A GSS + slot line | Dissipate the EM field around the slot coupled to the GSS |
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