IT-1: Provide highly efficient technology solution Assignment Help

# IT-1: Provide highly efficient technology solution Assignment Help

Part 2 (50 marks)(i) Explain the physical meaning of the L, C, R and G parameters used to model thebehaviour of transmission lines. Sketch the circuit for this model.(ii) Design a ??/4 transformer to match a 50 ? coaxial cable to a 75 ? coaxial cable,working at a frequency of 2 GHz. You should specify all the dimensions of the matchingsection. Take the phase velocity to be 3 x 108m/s, the relative dielectric constant of theinsulator (?r) to be 2.5 and the outer diameter to be 10 mm.(iii) Sketch your design.(iv) What is the magnitude of the reflection coefficient at the 75 ? cable interface withthe matching section and the corresponding VSWR?(v) What are the inductance per unit length and the capacitance per unit length for thematching section you have designed?Take 0 =4? x 10-7 H/m; r =1 and ?0 = 8.85 x 10-12 F/mPart 3 (30 marks)Describe briefly the additional matching technique you would need to use if the 75 ? cablewas replaced with a reactive load. You may use a sketch to illustrate your answer.If the impedance of this reactive load is 75 j40 ? calculate:(i) a design for a this additional matching element, specifying its dimensions andcharacteristics.(ii) the magnitude and phase of the reflection coefficient and the corresponding VSWR.