University:
Santa Fe College
Course:
ETS 2527C | Electromechanical Components and Mechanisms
Academic year:

2024
Views:

354

Pages:

5
Author:

Jabin F.

Title: Reflection Coefficient (Γ) Formula: (Γ = \frac{Z_L - Z_0}{Z_L + Z_0}) Diagram: A transmission line with a load impedance (Z_L) connected to a characteristic impedance (Z_0). The reflection coefficient is represented by (Γ). Title: Voltage Standing Wave Ratio (VSWR) Diagram: A graphical representation of a standing wave formed by the superposition of traveling waves in opposite directions on a transmission line. Formula: (VSWR = \frac{1 + |Γ|}{1 - |Γ|}) Title: Limiting Cases Case 1: Matched load (ZL = Z0): (Γ = 0) VSWR = 1 Case 2: Short-circuited load (ZL = 0): (Γ = -1) VSWR = ∞ Case 3: Open-circuited load (ZL = ∞): (Γ = 1) VSWR = ∞ Range: -1 ≤ Γ ≤ 1 1 ≤ VSWR ≤ ∞ Question 63 (Page 91): (a) Core diameter (d) (b) Outer diameter (D) (c) Length of the Cable (l) (d) Dielectric medium between Core and the Outer mesh (ε_r) Formula: (Z_0 = \sqrt{\frac{L}{C}}) L = inductance/unit length C = capacitance/unit length Note: Z_0 is independent of length. Header: "Ques-63 Page-77" Given values: (λ_0 = 12 cm) (m = \frac{4}{3}) (θ_c = 45°) Text: "wavelength in dielectric λ = λ_0 / m" "speed v = c / m" "wavenumber K = K_0m" "freq. ω = ω_0" Calculation: (λ = \frac{12}{4/3} = 9 cm = 90 mm) "Ans."