THE SPUR NUMBERS below represent the typical numbers one would see for downconversion. The numbers shown are for a -10 dBm input. The spur suppression is decreased for lower RF power levels by (n-1). For example if the 2RF x 2LO spur is typically 40 dBc for a -10 dBm input, then for a -20 dBm input the level is (2-1) x 10 dB lower, or 50 dBc.
Double-Balanced: M1/M4/M8/M9
Spurious Suppression (Typical) – dBc
Triple-Balanced: M2’s – Sine-Wave LO-Drive
Spurious Suppression (Typical) – dBc
Triple-Balanced: M2’s – Square Wave LO-Drive
Spurious Suppression (Typical) – dBc
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