Hey, I took the #$%@ quiz and it thinks I'm
borderline - got an 85. Of course, I didn't see
any warning that I should have a formula sheet
and calculator onhand - it sure would have
I didn't like that it doesn't
even tell you which questions you get right or
wrong. Just a score at the end. I'd like to know
how anyone got the 147 scores? My guess is
taking it multiple times under different names.
Anyway, I did screen captures on each
question just so I could have a record to check
myself. Here they are for your study period
prior to taking the quiz.
Anyone care to
give us all your choices for the answers -
showing your solutions gets you extra credit.
If a 10MHz modulated signal is
transmitted on a 2GHz carrier frequency, what is
the best fit for the minimum sample rate rate
required to demodulate the signal?
This type of antenna is capable of being used at
more than one frequency band due to the presence
of a parallel LC network:
A: Dummy antenna
B: Loop antenna
C: Isotropic antenna
What is 2 RADAR miles?
What would be the smallest and most
efficient aperture for a slot antenna radiation
of a 2GHz signal?
A: 6 inches
B: 12 inches
D: 3 inches
A 0.5m stub
(monopole) antenna over an infinite ground plane
will be resonant at what fundamental frequency?
A: 300 MHz
B: 150 MHz
C. 600 MHz
What is the condition that
would BEST indicate a Receiver Selectivity
A: Two transmitters of similar
modulation received into the same antenna
amplifier and filter section.
B: An increase
in the noise floor impacting C/N ratio of the
C: An out-of-channel signal
that is able to force the receiver LNA into
compression thus impacting sensitivity.
high level signal in channel that prevents
desired signals from being received.
What is the voltage gain from 1 uV to 0.1 V?
A: 140 dB
B: 70 dB
C: 100 dB
D: 50 dB
An antenna is assumed to be matched when
A: Impedance is approximately equal to 50 ohms.
B: SWR (standing wave ratio) equals
C: Impedance is equivalent
to free space impedance.
D: Antenna impedance
is purely resistive.
What is the average
power of a pulsed signal with the following
characteristics: (PRF = 1 kHz, PW = 1 us, Peak
Power = 100 kW)?
A: 1 W
B: 10 W
D: 1 kW
Is the PRF (Pulse
Repetition Frequency) of a puls is 5 kHz, what
is the PRI (Pulse Repetition Interval)?
B: 200 us
C: 500 us
D: 2 ms
What type of jitter is UNBOUNDED?
B: Periodic Jitter
D: Duty cycle Jitter
Which is not a factor increasing spectral
A: Increased risetime
C: Memory effects
Baseband signal clipping
represents the lowest level signal?
B: -10 dBm
D: -40 dBW
An input to a power sensor says DO NOT
EXCEED 100 V. What is that power level?
B: 53 dBm
C: 130 dBuV
D: 33 dBm
If a 20 MHz modulated signal is transmitted
on a 1 GHz carrier, what is the bandwidth
required to see the 5th order intermodulation
A: 100 MHz
B: 1.05 GHz
D: 1010 MHz
Which is an
expected advantage of MIMO (Multi-input
B: Improved spatial
C: Reduced receiver complexity
D: Lower latency
What component is not
likely to have non-linear response?
pass LC filter
C: Power Amp
To reduce common
mode coupling from antenna to receiver, one
A: Eliminate the balun
B: Change Rx
C: Use twisted pair or
change the dielectric constant
D: Put a
ferrite core on the antenna feed line
What is the approximate average power of the
five power meter readings: (+40 dBm, +10 dBm, +3
dBm, +10 dBm, +2 dBm)?
A: ~13 dBm
C: ~10 dBm
D: None of the above
A baseband system has a residual EVM of
3%. If a gain block with a 4% EVM is added to
the baseband and the errors are able to sum
coherently, what would the overall system EVM