Experiment 1 : Frequency Measuring with Resonance Frequency Meter

 

1.        Give a simple discussion regarding the operation of resonant frequency meter in this experiment.

2.        Calculated the error (deviation) between the frequencies obtained using the resonance frequency 

            meter and the  frequencies from the oscillator data sheets.

 

Experiment 2 : Measuring of Guide Wavelenght, l_H

 

1.         Proof with the standing wave diagram on how the equation (1) can be obtained. What are the   

            assumptions made?

 

2.         What is guide wavelength and give a simple but complete description on it.

 

3.         Calculate the deviation between the measured and calculated value of l_H.

 

 

 

Experiment 3 : Voltage Standing Wave Ratio and Standing Wave

 

1.         Describe the following terms:

a.                   Matching/mismatching

b.                  Inverse standing wave ratio, m

c.                   Reflection coefficient

d.                  Standing wave

e.                   Voltage standing wave ratio (VSWR)

 

2.         In power measurement, attention was draw to the fact that considerable measuring errors may occur due to different inverse standing wave ratios of load (m_v) and power head (detector), m_m. Assume m_m is equal to 1, then use the following formula to calculate the measuring error F for all the cases.

           

                                                F = [ m_m (1 – m_v)² ]

                                                       [ m_v (1 + m_m)² ]

 

3.         Discuss the whole experiment.  

 

 

Experiment 4 : Matching Impedance

 

1.          Simply describe the usage of Smith diagram.

 

2.           Why is it in the experiment, oscillator is supplied with DC voltage and what are the purposes of   

           using PIN modulator and circulator in this experiment.

 

3.        Briefly describe the interferences from the experiment.