Virginia Diodes, Inc - Spectrum Analyzer

Spectrum Analyzer Extension Modules

OVERVIEW

Description

Virginia Diodes, Inc. (VDI) Spectrum Analyzer Extension (SAX) modules provide high performance broadband down-conversion and frequency extension of microwave spectrum analyzers into the THz range. VDI SAX modules offer full waveguide band coverage and are available from WR28 (26 to 40 GHz) to WR1.0 (750 to 1100 GHz) with additional bands under development.

For spectrum analyzer extension mode, this turn-key, sweepable solution is compatible with most modern spectrum analyzers with external mixer option. For block down- and up-conversion, the SAX modules can be driven by an LO signal generator that meets the input frequency and power requirements. Contact VDI for spectrum analyzer extension compatibility.

Standard Features

- Full waveguide band coverage

- Low-conversion loss and noise figure

- Broadband IF up to 40 GHz for block down-conversion.

- 8" x 5" x 3" enclosure suitable for standalone operation or mounting on optical tables and probes

- 9V DC power supply included

Options

- IF input port for block up-conversion

- Amplifiers and filters for use with up-conversion option

- External Micrometer driven variable attenuator (~0-30dB)

- Output horn antenna for free space coupling

- Waveguide test port extensions (1" and 2" available)

- High Sensitivity (Please contact VDI for more information)

Mini SAX (NEW!)

VDI Mini SAX Standard Product List
VDI Part #	Band (GHz)	Typical SSB Conversion Loss (dB)	Maximum IF Frequency (Typical, GHz)^†
VDI Part #	Band (GHz)	Intrinsic Mixer,*	Maximum IF Frequency (Typical, GHz)^†
WR1.0SAX-M	750 - 1,100	25	40
WR1.5SAX-M	500 - 750	18	40
WR2.2SAX-M	330 - 500	14	40
WR2.8SAX-M	260 - 400	13	40
WR3.4SAX-M	220 - 330	12	40
WR4.3SAX-M	170 - 260	11	26
WR5.1SAX-M	140 - 220	11	22
WR6.5SAX-M	110 - 170	10	17
WR8.0SAX-M	90 - 140	10	14
WR10SAX-M	75 - 110	10	11
WR12SAX-M	60 - 90	10	9
WR15SAX-M	50 - 75	10	7.5
WR19SAX-M	40 - 60	9	6
WR28SAX-M	26 - 40	9	4

*Intrinsic mixer conversion loss is measured before any IF amplification.
**Maximum conversion loss of WR-15, WR-12 and WR-10 SAX-M is 4dB at the
High IF Port after IF amplification.
^† For block down-conversion mode only. Maximum IF bandwidth is limited to 20 GHz when
up-conversion option is added.
For more information about the Displayed Average Noise Level (DANL), please refer to the
SAX Product manual located on the Resources tab.

General Specifications for VDI SAX-M Modules
Description		Specification	Connector
LO Input Port	Low Frequency (Typical / Damage)	10 dBm ± 3 dB / 18 dBm	2.92mm (f)
LO Input Port	High Frequency (Typical / Damage)	0 dBm ± 3 dB / 6 dBm	2.92mm (f)
Low Freq. IF Output Port	WR28 to WR1.0 (Typical)	~50kHz-2.5GHz	2.92mm (f)
High Freq. IF Output Port	Start Frequency (Typical)	~50kHz	2.92mm (f)
High Freq. IF Output Port	Stop Frequency	See Product Manual	2.92mm (f)
RF Test Port	VDI Precision Flange	WR15 to WR1.0	UG-387/UM
RF Test Port	VDI Precision Flange	WR28 to WR19	UG-599/UM
AC Input	Single-Volt Power Supply (+9V / 4A)	100-240VAC, 3.5A, 50-60 Hz	U.S. or E.U.
Maximum Weight	--	2.0 Lbs. (0.90 Kg.)	--
Dimensions	Typical (Length x Width x Height)	6" x 3.5" x 1.5"	--
Operating Temperature	Typical / Recommended	25°C / 20-30°C	--

SAX MODULES

VDI SAX Standard Product List
VDI Part #	RF Frequency Band (GHz)	RF Power Limits (Compression / Damage, typ.)	Intrinsic Mixer Conversion Loss (Typ., dB),*	Maximum IF Frequency (Typical, GHz)	Displayed Average Noise Level (dBm/Hz, typical)^†
WR28SAX	26 - 40	-4 / 6	9	4	-150
WR19SAX	40 - 60	-10 / 0	9	6	-150
WR15SAX	50 - 75	-10 / 0	9	7.5	-150
WR12SAX	60 - 90	-10 / 0	10	9	-150
WR10SAX	75 - 110	-10 / 0	10	11	-150
WR8.0SAX	90 - 140	-10 / 0	10	14	-150
WR6.5SAX	110 - 170	-10 / 0	10	17	-150
WR5.1SAX	140 - 220	-10 / 0	11	22	-150
WR4.3SAX	170 - 260	-10 / 0	11	26	-150
WR3.4SAX	220 - 330	-20 / -10	14	40	-150
WR2.8SAX	260 - 400	-10 / 0	13	40	-145
WR2.2SAX	330 - 500	-20 / -10	16	40	-150
WR1.5SAX	500 - 750	-20 / -10	18	40	-150
WR1.0SAX	750 - 1,100	-20 / -10	30	40	-135
WR0.65SAX	1,100-1,500	-20 / -10	33	40	-130 (est.)

*Intrinsic mixer conversion loss is measured before any IF amplification.
**Maximum conversion loss of WR-15, WR-12 and WR-10 SAX is 4dB at the High IF Port
after IF amplification.
†Displayed Average Noise Level (DANL) measurements taken on Keysight PXA based on
compression levels listed above.
For small signal analysis, DANL can be enhanced with external IF amplification.
Contact VDI for more information.

General Specifications for VDI SAX Modules
Description		Specification	Connector
LO Input Port	Low Frequency (Typical / Damage)	10 dBm ± 3 dB / 20 dBm	2.92mm (f)
LO Input Port	High Frequency (Typical / Damage)	0 dBm ± 3 dB / 6 dBm	2.92mm (f)
Low Freq. IF Output Port	WR19 to WR6.5 (Typical)	~100MHz-2.5GHz	2.92mm (f)
Low Freq. IF Output Port	WR5.1 to WR0.65 (Typical)	~50kHz-2.5GHz	2.92mm (f)
RF Test Port	VDI Precision Flange	WR15 to WR0.65	UG-387/UM
RF Test Port	VDI Precision Flange	WR28 to WR19	UG-599/UM
AC Input	Single-Volt Power Supply (+9V / 4A)	100-240VAC, 3.5A, 50-60 Hz	U.S. or E.U.
Maximum Weight	--	4.0 Lbs. (1.81 Kg.)	--
Dimensions	Typical (Length x Width x Height)	8" x 5" x 3"	--
Operating Temperature	Typical / Recommended	25°C / 20-30°C	--