o, differential CPW (coplanar waveguide) is not structured like the image you sent. A differential CPW typically consists of two signal traces of equal width separated by a small gap, with a ground plane on the same layer as the signal traces. The image you sent shows two orange strips on a wooden plank, which is not a typical construction for a differential CPW.
Here are some of the key features of a differential CPW:
- Two signal traces: As mentioned above, a differential CPW has two signal traces of equal width. These traces carry the differential signal, which is the difference between the voltages on the two traces.
- Small gap: The two signal traces are separated by a small gap, typically on the order of a few hundredths of a millimeter. This gap is important for maintaining the characteristic impedance of the differential CPW.
- Ground plane: The differential CPW is typically fabricated on a substrate with a ground plane on the same layer as the signal traces. The ground plane helps to shield the differential signal from noise and interference.
The specific dimensions of a differential CPW will depend on the desired characteristic impedance and the operating frequency of the signal. However, the general structure of a differential CPW is as described above.
Murtadha Shukur Thanks for your reply, I read your description carefully, so the reason you say that the structure shown in my picture is not typical for differential CPW is that the gap between the two signal lines is too large? Because I think my structure is basically the same as what you described, except that the gap between the two signal lines is larger.
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