Filter Design Part 24. Formulas for the Design of Coupled Line Bandpass Filter on a Microstrip Line.
Filter Design Playlist
• Filter Design Part 1. Different Types...
1st Video:
Formulas that are Needed for the Design of Coupled Line Bandpass Filter on a Microstrip Line.
• Filter Design Part 24. Formulas for t...
2nd Video:
Bandpass Filter Design Example: How to Design a Coupled Line Bandpass Filter (BPF) from Scratch!
• Filter Design Part 25. How to Design ...
3rd Video:
How to Find the Width & Gap of the Coupled Line Configure in Microstrip Line for a BandPass Filter.
• Filter Design Part 26. How to Calcula...
Narrowband bandpass filters can be made with several cascaded coupled line sections each apply a resonant response that contributes to the whole filter’s frequency response.
The key advantages of coupled-line filters over other distributed filters is that the coupling between resonators can be strong if the pair of coupled-line resonators are close to each other, or low if they are widely separated. This enable bandpass filters to be realized with high (70 to 30 %), medium (30 to 10 %) or low (10 to 3 %) bandwidth.
The low-bandwidth filters require low coupling of the resonators, while the high bandwidth filters require high coupling. Coupled-line filters are also compact and can be implemented in microstrip configurations or most of the other transmission line technologies.
Design a coupled line bandpass filter with N = 3 and a 0.5 dB equal-ripple response. The center frequency is 2.0 GHz, the bandwidth is 10%, and Z0 = 50"Ω" . What is the attenuation at 1.8 GHz?
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