1. f(t-a) U(t)
2. f(t) U(t-a)
3. f(t-a) U(t-a)
4. f(t-a) (i-a)
f(t-a) U(t-a)
1. Directivity
2. I-Gain
3. Standing wave ratio
4. Reflection coefficient
Reflection coefficient
1. the current it half of the current at response
2. the impedance is half the impedance at resonance
3. the resistance is equal to the resultant reactance
4. none of these
the resistance is equal to the resultant reactance
1. Coaxial cable
2. Open wire
3. Twin lead
4. All of the above
All of the above
1. Z11 = Z22
2. BC Ad = -1
3. Y12 = -Y21
4. h12 = h21
BC Ad = -1
1. a resistance
2. an inductance
3. a capacitance
4. a mutual inductance
a resistance
1. High gain
2. Folded dipole
3. Parasitic elements
4. Good bandwidth
High gain
1. An impedance transformer
2. Frequency compensator
3. Flying resistor
4. None of the above
An impedance transformer
1. the transformer is an ideal transformer.
2. the turns ratio of the transformer is also two
3. it is a perfect transformer
4. none of these
it is a perfect transformer
1. Single stub of adjustable position.
2. Double stub
3. Broadband directional coupler
4. None of these
Double stub