HP Q347B Millimeter-Wave Noise Source, Q-band

Product Summary

The HP Q347B noise source covers a 33 to 50 GHz frequency range. This waveguide noise source allows you to make accurate and convenient noise figure measurements on millimeter-wave devices. The HP Q347B provides highly precise broadband noise at the input of the system or component under test. The noise figure meter then processes the ON/OFF ratio of noise power present in the system IF, and provides an accurate reading of noise figure and gain. The HP Q347B noise source has remarkable ENR stability over time, which allows longer recalibration cycles and more accurate noise figure measurements.

Product Features

• Performance and reliability at millimeter-wave frequencies

• Excellent ENR stability over time

• Low SWR

Product Specifications

Product Specifications
Frequency Range:		33 to 50 GHz

Excess Noise Ratio (ENR) Range
	33 to 42 GHz:		10 to 13 dB
	42 to 50 GHz:		6 to 12.5 dB

Maximum SWR (reflection coefficient)
Source Off:			<1.57 (0.22)
Source On:			<1.46 (0.19)

Power Required:			28 V ±1 V (automatically supplied by the
				HP 8970B Noise Figure Meter

Maximum Reverse Power:		100 mW

Connectors
Bias:				BNC (f)
Noise Output:			Q-Band Waveguide
				UG-383/U Flange

ENR Variation with Temperature:
				<0.009 dB/°C

ENR Variation with Voltage:	<0.005 dB/V

Switching Speed:		<10 µs


General Characteristics
Operating Temperature:		0 to 55°C

Dimensions:			53 mm x 108 mm x 62 mm
				(2.1 in x 4.3 in x 2.5 in)
Weight
Net:				0.23 kg (0.51 lb)
Shipping:			0.38 kg (0.85 lb)

Product Ordering Information

HP Q347B	Millimeter-Wave Noise Source, Q-band

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