.pdf version
 

NSI-RF-5940

 

Distributed Frequency Converter, 1 GHz to 26.5 GHz

DESCRIPTION

The Distributed Frequency Converter (DFC) is designed to provide down-conversion of a test and a reference RF signal to a fixed 20 MHz or other IF signal, using remote mixer modules. The NSI-RF-5940 consists of an LO/IF unit and two 1-26.5 GHz mixer modules.

BLOCK DIAGRAM

 

 

FEATURES

 
  • Compatible with NSI Panther, Agilent 8530A and PNA receivers
  • Microwave Mixer Module covers 1 GHz to 26.5 GHz
  • Optional Mixer Modules provide frequency coverage
    as low as 100 MHz and as high as 50 GHz
  • Supports LO cable lengths up to 120 feet at 18 GHz
  • Fundamental mixing up to 20 GHz
  • Test and reference mixer modules are identical and connect to LO/IF unit with a single cable
  • Test and reference LO cables do not have to be of the same length
  • Field-replaceable RF input connector

SPECIFICATIONS

DFC Model
NSI-RF-5940
Frequency Range
1 to 26.5 GHz
Nominal IF Frequency
5 - 20 MHz
Nominal LO Input Power
5 dBm
Maximum LO cable loss
35 dB
Specifications for Fundamental Mixing
(@1000 measurements per second)
 Using Agilent 8530A receiver Using NSI Panther 9000 receiver Using Agilent PNA
(20 MHz IF)		 Using Agilent PNA
(8.33 MHz IF)
Frequency Range
 1 to 20 GHz 1 to 20 GHz 1 to 20 GHz 1 to 20 GHz
Maximum Test and Reference RF In Power
(0.1 dB Compression)
-26 dBm -29 dBm -30 dBm -24 dBm
(with 20 dB IF attenuators)
Conversion Efficiency, RF In to IF Out
 10 dB to 16 dB 10 dB to 16 dB 10 dB to 16 dB 10 dB to 16 dB
Sensitivity, S/N = 1
 < -117 dBm < - 119 dBm < - 115 dBm < - 115 dBm
Dynamic Range
 > 91 dB > 90 dB > 85 dB > 91 dB
Isolation, Reference to Test Channel
 > 110 dB > 110 dB > 110 dB > 110 dB

Specifications for Third Harmonic Mixing
(@1000 measurements per second)

 Using Agilent 8530A receiver Using NSI Panther 9000 receiver Using Agilent PNA
(20 MHz IF) 		Using Agilent PNA
(8.33 MHz IF)
Frequency Range
 6 to 26.5 GHz 6 to 26.5 GHz 6 to 26.5 GHz 6 to 26.5 GHz
Maximum Test and Reference RF In Power
(0.1 dB Compression)
 -18 dBm -21 dBm -22 dBm -15 dBm
(with 20 dB IF attenuators)
Conversion Efficiency, RF In to IF Out
 -1 dB to 8 dB -1 dB to 8 dB -1 dB to 8 dB -1 dB to 8 dB
Sensitivity, S/N = 1
 < -106 dBm < - 108 dBm < - 104 dBm < - 104 dBm
Dynamic Range
 > 88 dB > 87 dB > 82 dB > 89 dB
Isolation, Reference to Test Channel
 > 100 dB > 100 dB > 100 dB > 100 dB
Physical Characteristics - LO/IF Unit
Height
 3.5" (2 EIA Units)
Width
 17" (excluding rack adapter)
Depth
 16" (excluding handles)
Power
 100 - 240 V, 50/60 Hz, 35 W
Physical Characteristics - Mixer Module
Height
5" (excluding connector)
Width
 5" (excluding connector)
Depth
 1.7"
Indicators
 LO power OK/ Too Low LED
Connectors
 RF: 3.5 mm (f) standard, replaceable with other types; LO: N(f)

ORDERING INFORMATION

NSI Part Number Description
NSI-RF-5940
Distributed Frequency Converter Set, 1 to 26.5 GHz.
Consists of LO/IF Unit and two 1 to 26.5 GHz Mixer Modules
NSI-RF-5941
Distributed Frequency Converter Set, 0.1 to 6 GHz.
Consists of LO/IF Unit and two 0.1 to 6 GHz Mixer Modules
NSI-RF-5942
Distributed Frequency Converter Set, 1 to 40 GHz.
Consists of LO/IF Unit and two 1 to 40 GHz Mixer Modules
NSI-RF-5943
Distributed Frequency Converter Set, 1 to 50 GHz.
Consists of LO/IF Unit and two 1 to 50 GHz Mixer Modules
NSI-RF-5945
DFC, LO/IF Unit
NSI-RF-5946
DFC, 1 to 26.5 GHz Mixer Module
NSI-RF-5947
DFC, 0.1 to 6 GHz Mixer Module
NSI-RF-5948
DFC, 1 to 40 GHz Mixer Module
NSI-RF-5950
DFC, 1 to 50 GHz Mixer Module

 

Comparison between NSI DFC and Agilent 85309A with 85320A/B mixers

Specification Agilent 85309A with 85320A/B NSI DFC
Frequency Range 2 to 26.5 GHz (usable to 1 GHz) 1 to 26.5 GHz
Maximum LO frequency 18 GHz 20 GHz
Maximum LO/IF Output Power +23 dBm +15 dBm
Minimum Mixer LO Power +8 dBm -20 dBm
Maximum allowable LO cable loss 15 dB 35 dB
LO Cable length requirement Test and Reference LO cable must have the same loss No restrictions

Nearfield Systems, Incorporated
19730 Magellan Drive, Torrance, CA 90502, USA, Tel: 310.525.7000, Fax: 310.525.7100
Email: sales@nearfield.com. Visit our website: www.nearfield.com