Ferrite Phase Shifters MCQ’s

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This set of RF & Microwave Circuit Design Multiple Choice Questions & Answers (MCQs) focuses on “Ferrite Phase Shifters”.

1. Phase shifters are used in _______ where the antenna beam can be steered in space by electronically controlled phase shifters.
a) Phased array antennas
b) Dipole array antennas
c) Slot antennas
d) Patch antennas

2. Reciprocal phase shifters give different phase shift in different direction.
a) True
b) False

3. ______ is a device that produces a phase shift of a required amount of the input wave.
a) Phase shifter
b) Attenuator
c) Resonator
d) None of the mentioned

4. If a ferrite slab provides a phase shift of 48⁰/ cm, then the length of the ferrite slab required to produce a phase shift of 180⁰ is:
a) 4 cm
b) 3.75 cm
c) 4.5 cm
d) 3.5 cm

5. Gyrator is a device that produces a phase shift of ____ between the input and output.
a) 90⁰
b) 180⁰
c) 45⁰
d) None of the mentioned

6. Ferrite phase shifters have more advantages over FETs and diodes in using them in microwave integrated circuits.
a) True
b) False

7. If a ferrite slab provides a phase shift of 48⁰/ cm, then the length of the ferrite slab required to produce a phase shift of 90⁰ is:
a) 2.44 cm
b) 1.88 cm
c) 4.5 cm
d) 3.5 cm

8. The scattering matrix of a gyrator is:
a) Symmetric
b) Skew symmetric
c) Identity matrix
d) Null matrix

9. A gyrator can be made a passive device by certain design methods so that they do not affect the power levels of the circuit in which they are used.
a) True
b) False

10. If a ferrite slab produces a phase shift of 0.836 rad/ cm, then the length of the slab required to produce a phase shift of 135⁰ is:
a) 2.81 cm
b) 3 cm
c) 2 cm
d) 3.4 cm

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