Lecture 10 Ch 8

Lecture 10 Ch 8 - EE 4002 RF Circuit Design Chapter 8...

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EE 4002 RF Circuit Design Chapter 8 Frequency Response of Matching Networks
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Too many Choices! With at least 2 configurations, what is the difference? Which is better? Component availability DC Biasing (CH 9) Stability (Chapter 8.3) Frequency response (now)
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Forbidden regions Shaded regions denote values of the load impedance that cannot be matched to a 50 Ω source using that particular matching configuration
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Frequency response of matching networks: Each configuration contributes a frequency response. L-networks used for matching HPF LPF BPF a, b g, h c, d, e, f
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8-8(b) 8-8(c)
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The matching network can be viewed as a resonance circuit with a center frequency and bandwidth. The loaded quality factor : Loaded Q includes all of the circuit component values (resistors) To find the loaded Q we must find the bandwidth of the matching network. 0 L
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Lecture 10 Ch 8 - EE 4002 RF Circuit Design Chapter 8...

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