'Load impedance' diaporamas de présentation

Waves and Transmission Lines

Waves and Transmission Lines. TechForce + Spring 2002 Externship Wang C. Ng. Traveling Waves. Standing Waves. Standing Waves. Envelop of a Standing Wave. Load. Waves in a transmission line. Electrical energy is transmitted as waves in a transmission line.

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Transistor Amplifier Design

Transistor Amplifier Design. Transducer Gain and Stability Design for Maximum Gain Mixers. Transducer Gain and Stability. a single stage transistor amplifier with matching networks at the input and output terminals of the transistor is shown below:. Transducer Gain and Stability.

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Impedance Matching with Lumped Elements

jX 1. jB 2. Y L. Impedance Matching with Lumped Elements. jX 1. Z L. jB 2. Single-Stub Matching. Load impedance . Input admittance=S. Series Stub. Voltage minimum. Input impedance=1/S. Double Stub Matching Network. a. b. Y L. jB 2. jB 1. b. a. x=1. Y L. P open circuit .

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Chapter 12 Three-Phase Circuits

??? ( ? ). Chapter 12 Three-Phase Circuits. 12.1 Introduction (1). Three-Phase Four Wire Systems. Single-Phase Systems. two-wire type. three-wire type. 12.1 Introduction (2). Nearly all electric power is generated and distributed in 3-phase.

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Chapter 13

Chapter 13. Magnetically coupled circuits. Mutual inductance. ?. A single inductor:. ?. ?. Mutual inductance of M 21 of coil 2 with respect to coil 1. ? 21. ? 22. i 2 (t). v 1. v 2. N 1. N 2. (for nonmagnetic cores). Dot convention.

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?????????????????? E-Mail address:hirokuni@kmail.plala.or.jp

?????????????????? E-Mail address:hirokuni@kmail.plala.or.jp. Who am I?. Born in 1940 in Nagoya city. Majored Economics in school . Spent most of my life working for a Danish company in the foundry machine field. Retired in 2001 Resumed audio activity in early 1990es.

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Waves and Transmission Lines

Waves and Transmission Lines. Wang C. Ng. Traveling Waves. Envelop of a Standing Wave. Load. Waves in a transmission line. Electrical energy is transmitted as waves in a transmission line. Waves travel from the generator to the load (incident wave).

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Lecture 31

Lecture 31. Sinsuoidal steady state power Instantaneous and average (real) power Reactive power Complex power Power factor Related educational modules: Section 2.9.0, 2.9.1. AC power. Power is still the product of voltage and current:

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Prof. Ji Chen

ECE 3317. Prof. Ji Chen. Spring 2014. Notes 13 Transmission Lines ( Impedance Matching). Smith Chart. S. Z g. Z 0. Sinusoidal source. Z L. z = 0. z. Impedance matching is very important to avoid reflected power, which causes a loss of efficiency and interference.

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Network Theorems (AC)

Network Theorems (AC). ET 242 Circuit Analysis II. E lectrical and T elecommunication Engineering Technology Professor Jang. Acknowledgement.

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The Transmission [T] Matrix

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16.360 Lecture 8

j ? z. j ? z. +. +. e. e. +. -. ?. ?. (. (. ). ). V 0. V 0. V(z). I(z). j2 ? z. -j2 ? l. -j2 ? l. j2 ? z. e. e. e. e. -. +. -. +. (1. (1. (1. (1. ?. ?. ?. ?. ). ). ). ). Z 0. Z 0. -j ? z. -j ? z. e. e. 16.360 Lecture 8. Input impudence. B.

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Prof. D. R. Wilton

ECE 3317. Prof. D. R. Wilton. Notes 10 Transmission Lines (Impedance Matching). [Chapter 6]. Smith Chart. S. Z g. Z 0. sinusoidal source. Z L. z = 0. z.

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16.360 Lecture 7

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16.360 Lecture 9

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Measurement of Antenna Load Impedance for Power Amplifiers

Measurement of Antenna Load Impedance for Power Amplifiers Dongjiang Qiao, Tsaipi Hung, David Choi, Feipeng Wang, Mingyuan Li, and Peter Asbeck The Department of Electrical and Computer Engineering University of California, San Diego. Outline. Introduction

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EEE 302 Electrical Networks II

EEE 302 Electrical Networks II. Dr. Keith E. Holbert Summer 2001. Maximum Average Power Transfer.

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Example 10.5

Example 10.5. A load having an impedance of 39 + j26 ? is fed from a voltage source through a line having an impedance of 1 + j4 ? . The effective, or rms, value of the source voltage is 250 V. Calculate the load current I L and the voltage V L.

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Load-Pull Measurements

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