|
In a horizontal-slot antenna, the polarization of the energy is radiated in what direction?
|
|
0
|
487
|
June 18, 2022
|
|
In a frequency-sensitive antenna, the physical length of ___
|
|
0
|
400
|
June 18, 2022
|
|
What is/are the basic type(s) of antenna array(s) in common use?
|
|
0
|
410
|
June 18, 2022
|
|
In a delay-type lens, the amount of delay in the phase of the ___
|
|
0
|
337
|
June 18, 2022
|
|
A lens antenna which accelerates some portion of ___
|
|
0
|
365
|
June 18, 2022
|
|
In a lens antenna, what is the purpose of the collimating lens?
|
|
0
|
325
|
June 18, 2022
|
|
The parabolic reflector is often used because it produces ___
|
|
0
|
379
|
June 18, 2022
|
|
Radar range is determined as a function of which of the following measures?
|
|
0
|
361
|
June 18, 2022
|
|
Surface angular measurements for antenna directivity in ___
|
|
0
|
356
|
June 18, 2022
|
|
Directivity refers to which of the following properties of a radiated beam?
|
|
0
|
323
|
June 18, 2022
|
|
A standing-wave ratio (swr) describes which of the following quantities?
|
|
0
|
330
|
June 18, 2022
|
|
Power ratio is a term used to express what property of an antenna?
|
|
0
|
337
|
June 18, 2022
|
|
The PIN diode begins acting as a variable resistance at what minimum frequency?
|
|
0
|
565
|
June 18, 2022
|
|
A Schottky barrier diode has which of the following advantages over a ___
|
|
0
|
335
|
June 18, 2022
|
|
In a point-contact diode, passing a large current from the catwhisker to the ___
|
|
0
|
318
|
June 18, 2022
|
|
In an avalanche transit-time diode, what causes the ___
|
|
0
|
319
|
June 18, 2022
|
|
Gallium-arsenide semiconductors begin to exhibit which of the ___micro
|
|
0
|
321
|
June 18, 2022
|
|
Bulk-effect semiconductors have what primary advantage over normal pn junction semiconductors?
|
|
0
|
307
|
June 18, 2022
|
|
In a nondegenerative parametric amplifier with a pump frequency of ___
|
|
0
|
318
|
June 18, 2022
|
|
In a nondegenerative parametric amplifier, how does the pump frequency compare to ___
|
|
0
|
848
|
June 18, 2022
|
|
How is amplification accomplished in the circuit?
|
|
0
|
381
|
June 18, 2022
|
|
What is the most important feature of the parametric amplifier?
|
|
0
|
407
|
June 18, 2022
|
|
Stability is a problem in which, if any, of the following tunnel-diode frequency converters?
|
|
0
|
311
|
June 18, 2022
|
|
In the reflection-type, circulator-coupled tunnel-diode amplifier ___
|
|
0
|
333
|
June 18, 2022
|
|
Tuning a tunnel-diode oscillator by changing the capacitance of ___
|
|
0
|
342
|
June 18, 2022
|
|
The tuned circuit in a tunnel-diode oscillator determines which of the following circuit values?
|
|
0
|
825
|
June 18, 2022
|
|
The tunneling action of the tunnel diode produces which of the following useful properties?
|
|
0
|
302
|
June 18, 2022
|
|
The crossed-field amplifier produces which of the following desirable ___
|
|
0
|
313
|
June 16, 2022
|
|
A magnetron should be "baked in" under which of the following conditions?
|
|
0
|
315
|
June 16, 2022
|
|
Inductive tuning in a magnetron is accomplished by which of the following actions?
|
|
0
|
327
|
June 16, 2022
|