Table 1 Comparison of traditional flexible transmission lines.
From: An ultra-broadband flexible conductor backed coplanar waveguide with triangular edges
Ref. | Type | Substrate | Bandwidth | Integration | Power handling | Insertion loss |
|---|---|---|---|---|---|---|
Microstrip line | PET substrates (εr = 3.0, tanθ = 0.002) | DC-8 GHz | Easy | Low | 0.02 dB/mm@ 5 GHz | |
Microstrip line | Kapton (εr = 3.4, tanθ = 0.001) | DC-14 GHz | Easy | Low | 0.057 dB/mm@ 14 GHz | |
SSPPs | Rogers RT5880 (εr = 2.2, tanθ = 0.0009) | 12–18 GHz | Medium | Low | 0.0246 dB/mm@ 18 GHz | |
Coplanar waveguide | Kapton (εr = 3.4, tanθ = 0.001) | DC-67 GHz | Easy | Low | 0.3 dB/mm@ 67 GHz | |
Coplanar waveguide | Si (εr = 2.9, tanθ = 0.002) | DC-67 GHz | Easy | Low | 1 dB/mm@ 67 GHz | |
Coplanar waveguide | Kapton (εr = 3.4, tanθ = 0.001) | DC-110 GHz | Easy | Low | 0.4 dB/mm@ 67 GHz 0.546 dB/mm@ 110 GHz | |
This work | FCBCPW-TE | Polyimide (εr = 4.0, tanθ = 0.002) | DC-70 GHz | Easy | Low | 0.02 dB/mm@ 5 GHz 0.063 dB/mm@ 14 GHz 0.086 dB/mm@ 18 GHz 0.15 dB/mm@ 60 GHz 0.16 dB/mm@ 67 GHz 0.17 dB/mm@ 70 GHz |
