I have made a capacitor on a teflon substrate which is just two 10 cm long parallel copper tracks with 5 mm spacing between them. When I connect Radiofrequency (<200 MHz) source to it , the electrical field is not uniform along the length of the capacitor. How could i make this field uniform?
Just curious, how do you know the field is non-uniform? is this a series cap or a shunt cap?
10cm is ~7% of a wavelength, 24 electrical degrees, I think there should not be much of a distributed effect. but you could try two 5cm line/pairs in parallel.... or five 2.5cm lines that have four uniform gaps...
Join the international conversation on a broad range of microwave and RF topics. Learn about the latest developments in our industry, post questions for your peers to answer, and weigh in with some answers if you can!