Ferrite Isolators MCQ’s

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

1. The matrix of an ideal isolator is not ______
a) Unitary
b) Symmetric
c) Lossless
d) None of the mentioned

2. A very common application of isolator is to provide isolation between a low power source and the load.
a) True
b) False

3. Ferrite isolators are ____ port microwave devices.
a) Two
b) Three
c) Four
d) None of the mentioned

4. The attenuation of a ________ is very large near the gyro magnetic resonance of the ferrite.
a) Linearly polarized wave
b) Circularly polarized wave
c) Left polarized wave
d) Right polarized wave

5. Forward attenuation provided by a resonance ferrite isolator is:
a) Zero
b) Low
c) High
d) None of the mentioned

6. The length of a ferrite slab required operating with a minimum forward insertion loss and 30 dB reverse attenuation and the reverse attenuation at this point is:
a) 3 cm
b) 2.4 cm
c) 4 cm
d) 3.6 cm

7. The isolators constructed using ferrite materials must operate at:
a) Gyro magnetic resonance
b) Magnetic resonance
c) Isolator resonance
d) None of the mentioned

8. An isolator has a very large operating bandwidth and independent of any isolator parameter.
a) True
b) False

9. The electric field distribution of the forward and reverse waves in a ferrite slab-loaded waveguide is quite different. This property is used in:
a) Field displacement resonator
b) Resonance isolator
c) Waveguide isolator
d) None of the mentioned

10. Field displacement isolators require higher bias field than resonance isolators.
a) True
b) False

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