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Voltage Controlled Oscillator (VCO):
Type of oscillator that is continuously tunable by the application of a control
Frequency Tuning performance:
The characteristic frequency vs. tuning voltage curve generated by a VCO when
tuned from the minimum to the maximum tuning voltage extremes. Typically
presented in a graph format as Frequency vs. Voltage.
Tuning Sensitivity or Modulation Sensitivity:
The slope of the characteristic frequency tuning curve at a given tuning voltage
Continuous positive or negative change in the frequency tuning curve.
The amount of frequency deviation from a best fit straight line of the frequency
vs. tuning voltage curve (MHz).
Output Power Variation:
The variation of the output power of the fundamental frequency when observed
over the specified frequency range into a 50 ohm load at a fixed temperature
The variation of the output power from the average output power (㊣dB).
Output Power Variation with Temperature:
The variation of the output power with respect to a change in the device's
Frequency Drift with Temperature:
The variation of the output frequency with respect to a change in the device＊s
Spurious Output (Non-Harmonic):
Unwanted frequencies not harmonically related to the fundamental frequency (dBc).
The level of harmonics (nfo) relative to the level of the fundamental frequency
The variation of the output frequency due to a change in the supply voltage
The variation of the output frequency due to a change in the output load
conditions. Typically specified into a 12 dB Return Loss (MHz).
3 dB Modulation Bandwidth:
The modulating frequency at which the frequency deviation decreases to 0.707 of
its DC value. This is also a function of the modulating source impedance, which
is typically 50 ohms.
The single side band phase noise in a 1 Hz bandwidth, measured relative to the
carrier level at a specified offset frequency (dBc/Hz).
VCO Input Capacitance:
The total equivalent input capacitance seen at the tuning port of the VCO (pF).
Spurious signals seen on the VCO output when the device is subjected to
vibration or shock.
The sudden unexpected loss of frequency output while tuning across the frequency