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Electronic Communication Systems 2nd Edition by Roy Blake
النسخة 2الرقم المعياري الدولي: 978-0766826847Electronic Communication Systems 2nd Edition by Roy Blake
النسخة 2الرقم المعياري الدولي: 978-0766826847 تمرين 14
The display in Figure 1.25 shows the fundamental of a sine-wave oscillator and its second harmonic, as seen on a spectrum analyzer. The analyzer has an input impedance of 50 . Find:
(a) the oscillator frequency
(b) the amplitude of the signal, in dBm and in volts
(c) the amount in decibels by which the second harmonic is less than the fundamental (usually expressed as "x dB down")
Figure 1.25
Reference level 10 dBm
Vertical: 10 dB/division
Center frequency 100 MHz
Span: 20 MHz/division
(a) the oscillator frequency
(b) the amplitude of the signal, in dBm and in volts
(c) the amount in decibels by which the second harmonic is less than the fundamental (usually expressed as "x dB down")
Figure 1.25
Reference level 10 dBm
Vertical: 10 dB/division
Center frequency 100 MHz
Span: 20 MHz/division
التوضيح
موثّق
موثّق
(a)
Refer to Figure 1.25 in the textbook...
Electronic Communication Systems 2nd Edition by Roy Blake
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