Coaxial Cable | Wave-guide | |
---|---|---|
1. | It consists of center conductor and outer conductor. | Waveguide consists of single metallic walls acting as conductor. There is no center conductor in the waveguide. |
2. | The fundamental or dominant mode wave in a coaxial line is TEM. | TEM wave can not propagate through it. Wave transmission takes place using TE or TM modes. |
3. | There is no concept of cutoff frequency. | Each waveguide has a finite cut-off frequency. |
4. | The coaxial lines have PTFE as di-electric and have relatively higher loss. | As waveguide is air filled there will be less loss compare to coaxial line. |
5. | The power handling ability of coaxial-cable is relatively lesser. | Waveguide can handle higher power compared to coaxial cable because waveguide is filled with air as dielectric and air has higher break down voltage. |
6. | The bandwidth of coaxial line is broad. | The bandwidth of waveguide is smaller. |
Thursday, January 9, 2020
Difference between coaxial line and waveguide
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