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Power Amplifiers PDF

200 Pages·2014·4.42 MB·English
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2-Day Workshop on RF circuit and system design November 8-9, 2014 Bangalore Finetuning Academy Email: [email protected] www.finetuningrf.com Transmission lines Short-circuited quarter-wave stub 3 Open-circuited quarter-wave stub 4 Short-circuited stub Inductive when l<λg/4 Open-circuited stub Capacitive when l<λg/4 5 High impedance series line (Equivalent to a series inductance) A gap left in the transmission line (Equivalent to a series capacitance) 6 Choice of characteristic impedance 7 Choice of characteristic impedance 8 Coaxial cable L = 460.6xlog (D/d) nH/m C = 24.13 x er / log (D/d) pF/m 50 ohm PTFE-filled cable will have 94.8 pF/meter capacitance and 237 nH/meter inductance 9 Microstrip 10

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2-Day Workshop on RF circuit and system design. November 8-9 . circuit. ·. • Filter matching at the output of the transistor will decrease the gain at a.
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