E6E Quartz crystal (frequency
determining properties as used in
oscillators and filters); monolithic amplifiers (MMICs)
E6E01
(B)
For
single-sideband phone emissions, what would be the bandwidth of a good crystal
lattice band-pass filter?
A. 6 kHz at -6 dB
B. 2.1 kHz at -6 dB
C. 500 Hz at -6 dB
D. 15 kHz at -6 dB
E6E02
(C)
For
double-sideband phone emissions, what would be the bandwidth of a good crystal
lattice band-pass filter?
A. 1 kHz at -6 dB
B. 500 Hz at -6 dB
C. 6 kHz at -6 dB
D. 15 kHz at -6 dB
E6E03
(D)
What is
a crystal lattice filter?
A. A power supply filter made with interlaced
quartz crystals
B. An audio filter made with four quartz
crystals that resonate at 1-kHz intervals
C. A filter with wide bandwidth and shallow skirts
made using quartz crystals
D. A filter with narrow
bandwidth and steep skirts made using quartz crystals
E6E04
(D)
What
technique is used to construct low-cost, high-performance crystal filters?
A. Choose a center frequency that matches the
available crystals
B. Choose a crystal with the desired bandwidth
and operating frequency to match a desired center frequency
C. Measure crystal bandwidth to ensure at least
20% coupling
D. Measure crystal
frequencies and carefully select units with less than 10% frequency difference
E6E05
(A)
Which
factor helps determine the bandwidth and response shape of a crystal filter?
A. The relative frequencies
of the individual crystals
B. The center frequency chosen for the filter
C. The gain of the RF stage preceding the
filter
D. The amplitude of the signals passing through
the filter
E6E06
(A)
What is
the piezoelectric effect?
A. Physical deformation of a
crystal by the application of a voltage
B. Mechanical deformation of a crystal by the
application of a magnetic field
C. The generation of electrical energy by the
application of light
D. Reversed conduction states when a P-N
junction is exposed to light
E6E07
(C)
Which
of the following devices would be most suitable for constructing a receive
preamplifier for 1296 MHz?
A. A 2N2222 bipolar transistor
B. An MRF901 bipolar transistor
C. An MSA-0135 monolithic
microwave integrated circuit (MMIC)
D. An MPF102 N-junction field-effect transistor
(JFET)
E6E08
(A)
Which
device might be used to simplify the design and construction of a 3456-MHz
receiver?
A. An MSA-0735 monolithic
microwave integrated circuit (MMIC).
B. An MRF901 bipolar transistor
C. An MGF1402 gallium arsenide field-effect
transistor (GaAsFET)
D. An MPF102 N-junction field-effect transistor
(JFET)
E6E09
(D)
What
type of amplifier device consists of a small "pill sized" package
with an input lead, an output lead and 2 ground leads?
A. A gallium arsenide field-effect transistor
(GaAsFET)
B. An operational amplifier integrated circuit (OAIC)
C. An indium arsenide integrated circuit (IAIC)
D. A monolithic microwave
integrated circuit (MMIC)
E6E10
(B)
What
typical construction technique do amateurs use when building an amplifier
containing a monolithic microwave integrated circuit (MMIC)?
A. Ground-plane "ugly" construction
B. Microstrip construction
C. Point-to-point construction
D. Wave-soldering construction
E6E11
(A)
How is
the operating bias voltage supplied to a monolithic microwave integrated
circuit (MMIC)?
A. Through a resistor and RF
choke connected to the amplifier output lead
B. MMICs require no operating bias
C. Through a capacitor and RF choke connected
to the amplifier input lead
D. Directly to the bias-voltage (VCC IN) lead