R&S®SMW-B22 FM/φM Modulator and Enhanced Phase Noise Performance | Test & measurement | Option

SSB phase noise (f = 1 GHz, CW, 20 kHz offset)	< –136 dBc, –139 dBc (typ.)
Nonharmonics (200 MHz < f ≤ 1500 MHz, >10 kHz offset)	< –90 dBc

Spectral purity
SSB phase noise with R&S^®SMW-B22 option	CW, carrier offset = 20 kHz, measurement bandwidth = 1 Hz
	f = 1 GHz	< –136 dBc, –139 dBc (typ.)
	f = 2 GHz	< –130 dBc, –133 dBc (typ.)
	f = 3 GHz	< –126 dBc, –129 dBc (typ.)
	f = 4 GHz	< –124 dBc, –127 dBc (typ.)
	f = 6 GHz	< –120 dBc, –123 dBc (typ.)
Nonharmonics with R&S^®SMW-B22 option	CW, I/Q modulation (full-scale DC input), level > –10 dBm, > 10 kHz offset from carrier and outside the modulation spectrum
	100 kHz ≤ f ≤ 200 MHz	< –77 dBc, –87 dBc (typ.)
	200 kHz ≤ f ≤ 1500 MHz	< –90 dBc
	1500 kHz ≤ f ≤ 3 GHz	< –84 dBc
	3 GHz ≤ f ≤ 6 GHz	< –78 dBc
FM / φM
Maximum FM deviation	FM mode: normal, f > 3 GHz	40 MHz
Maximum φM deviation	φM mode: high deviation, f > 3GHz fmod ≤ 80 MHz / deviation	80 rad
Modulation source		internal, external, internal + external
Modulation frequency response	10 Hz to 10 MHz	<3 dB

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