Microwave Devices Lecture12
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The document discusses microwave filter design including filter prototypes, impedance and frequency scaling, and transformations between low-pass, high-pass, band-pass, and stop-band filters. Specifically, it covers filter design procedures using insertion loss methods like Butterworth and Chebyshev filters, low-pass filter prototypes, impedance and frequency scaling techniques, and mathematical transformations to convert between different filter types by adding lumped element inductors or capacitors in series or parallel configurations.
Microwave Devices Lecture12
- 1. Microwave Devices E511 Lecture 12 Amr Al.Awamry
- 2. Agenda Filter design Filter Prototype Impedance and Frequency Scaling LP,HP,BP,SP transformations
- 3. MW Filter design Insertion loss method Power loss ration Insertion loss Reflection coefficient is even function so it can be represented in the form : then
- 4. Insertion loss ..cont. Maximally flat Called Butterworth filter Equal ripple Called Chebyshev Filter
- 5. Filter design procedure Complete HPF system Specify LPF Passive or requiremen design BPF Active ts method BRF
- 8. Impedance and Frequency Scaling Now we got Low Pass filter prototype at the required cut of frequency taken into consideration characteristic impedance denormalization
- 9. Low-pass to high-pass transformation Bass-pass transformation Series L Shunt C
- 10. Stop-band transformation Series L Shunt C Plz look at ex 8.3, ex 8.4