Attenuators and Matching Pads, Terminations 75 mw to 1000 W, DC to 18 GHz

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1 Product Brochure Version 8. Attenuators and Matching Pads, Terminations 75 mw to W, DC to 8 GHz Attenuators_dat-bunt_en_758-96_3_v8.indd :33:39

Attenuators As a rule, the reflection coefficient of commercial signal generators or test receivers is about %. This value may be too high for precise measurements.

In this way, the reflection coefficients of both the gen erator and the receiver will be reduced. Signal generators often do not have a defined source impedance.

2 Attenuators As a rule, the reflection coefficient of commercial signal generators or test receivers is about %. This value may be too high for precise measurements. To improve matching, an attenuator should be inserted after the signal generator output and another one ahead of the receiver input. In this way, the reflection coefficients of both the gen erator and the receiver will be reduced. Signal generators often do not have a defined source impedance. In these cases, it is advisable to insert a 6 db ( db + 6 db) attenuator. The internal reflection coefficient of such a signal source is thus reduced to about 3 %, which is small enough for accurate measurements. Small attenuation error, largely frequency-independent attenuation and low VSWR are special features of the DNF attenuators. They are sturdy, immune to vibration (complying with MIL-A-3933), only slightly temperature-dependent and resistant to short-term overloading. The DNF attenuators are equipped with N connectors (male, female) and are available with 3/6///3 db attenuation. High-power attenuators High-power attenuators are used as dummy loads for transmitters and amplifiers in the frequency range Hz to 6 GHz. Their constant attenuation permits harmonics measurements to be allows on transmitters, TV transposers and other equipment. Thus, the high-power attenuator is superior to a simple. db/div Attenuators can also be used as reference standards for attenuation and gain measurements in line with the substitution method, for precise voltage division, and as buffers to isolate test circuits. DNF ( W/ W) termination. The power applied can be accurately determined from the power measured at the test output and from the known attenuation. Moreover, a frequency counter or analyzer can be connected to the test output. RBU (5 W/ W) The RBU high-power attenuators with 3/6///3 db attenuation are ideal for applications in the frequency range up to GHz, which is of particular interest for mobile radio measurements. The attenuators are characterized by low VSWR and a small attenuation error throughout the entire frequency range. Due to the large-area heat sink, the attenuator surface temperature does not rise above 75 C (at 5 C ambient temperature) even under full load. RBU RBU5 db DNF GHz. db/div RBU5 Typical attenuation (top) and VSWR (bottom) characteristics of RBU the attenuators RBU 5 and RBU (attenuation db)..5 GHz Attenuators_dat-bunt_en_758-96_3_v8.indd :33:4

RDL 5 (5 W) The RDL 5 high-power attenuator is suitable for the frequency range up to 6 GHz. A special feature is its constant low attenuation over the entire frequency range.

The energyabsorbing thin-film layer is deposited on a ceramic substrate, so the heat generated can directly dissipate without h aving to p enetrate any heat-insulating air l ayer.

3 RDL 5 (5 W) The RDL 5 high-power attenuator is suitable for the frequency range up to 6 GHz. A special feature is its constant low attenuation over the entire frequency range. RDL 5, 5 W RBS ( W) The RBS attenuator is of planar design using special manufacturing techniques. The energyabsorbing thin-film layer is deposited on a ceramic substrate, so the heat generated can directly dissipate without h aving to p enetrate any heat-insulating air l ayer. The result is a considerable reduction in size while maintaining the same powerhandling capacity as conventional attenuators. RBS, W 5 C 6 RBS 8 55 C 6 8 C RBS 8 4 Temperature in C Power in W Frequency in MHz Power handling capacity as a function of frequency and ambient Power in W Overtemperature as a function of the power applied. temperature. Attenuators_dat-bunt_en_758-96_3_v8.indd 3 Rohde & Schwarz Attenuators and Matching Pads, Terminations :33:5

Terminations RNA and RNB ( W) The 75 Ω and the 5 Ω terminations RNA and RNB are versatile line terminations used in 3/7 mm coaxial line systems.

The use of high-grade metal-film resistors provides a continuous power-handling capacity of W. RNA RNB. Limit value.

measurement applications. The RNB termination is for general use in the frequency range DC to 4 GHz. RNB Typical characteristic.

4 Terminations RNA and RNB ( W) The 75 Ω and the 5 Ω terminations RNA and RNB are versatile line terminations used in 3/7 mm coaxial line systems. A special feature is their very low reflection over a wide frequency range. The use of high-grade metal-film resistors provides a continuous power-handling capacity of W. RNA RNB. Limit value.5 VSWR The precision termination RNA features extremely low VSWR over the entire frequency range from DC to 3 GHz and is, therefore, ideal for measurement applications. The RNB termination is for general use in the frequency range DC to 4 GHz. RNB Typical characteristic..5 3 Frequency in GHz 4 Limit value and typical VSWR characteristics of the RNB. RAU ( W) The RAU termination is mainly used as a dummy antenna for mobile and stationary transmitters. Its low VSWR makes it also suitable for TV equipment. RAU 4 Attenuators_dat-bunt_en_758-96_3_v8.indd :33:56

Feedthrough Terminations, Matching Pads Voltage transformation is defined as the ratio in db of the voltages at the connectors: A5 Ω 75 Ω = lg A75 Ω 5 Ω = lg U5 Ω = 4 db U75 Ω U75 Ω = 7, 5 db U5 Ω

impedance (e.g. oscilloscopes or tuners with MΩ input impedance). The feedthrough terminations must be plugged directly onto the input connector of the measuring device to ensure optimum matching.

5 Feedthrough Terminations, Matching Pads Voltage transformation is defined as the ratio in db of the voltages at the connectors: A5 Ω 75 Ω = lg A75 Ω 5 Ω = lg U5 Ω = 4 db U75 Ω U75 Ω = 7, 5 db U5 Ω Feedthrough terminations RAD (5 mw), RAD 5 Power attenuation is the same in both directions: The RAD feedthrough termina tions are used for matching 5 Ω lines to measuring equipment of high input impedance (e.g. oscilloscopes or tuners with MΩ input impedance). The feedthrough terminations must be plugged directly onto the input connector of the measuring device to ensure optimum matching. Ap = lg 75 Ω U5 Ω = 5, 7 db Signal generator Vg Zs 5 Ω RAM 43.3 Ω 43.3 Ω 75 Ω Receiver Zrec 5 Ω Vrec 75 Ω : 5 Ω Two matching pads RAM to match a 75 Ω DUT to a signal generator and receiver, each having a characteristic impedance of 5 Ω. Vg Cable of desired length RAZ Zs 5 Ω 5 Ω Zs = 75 Ω 5 Ω By connecting a RAZ matching pad consisting of a 5 Ω series resistor, a signal generator with a 5 Ω output has an output impedance of 75 Ω Attenuation in db The bidirectional RAM matching pad provides the match between 5 Ω and 75 Ω impedance systems in both directions up to.7 GHz, causing minimum attenuation. Care should be taken that ports with the same characteristic impedances be connected to one another. DUT 5 Ω : 75 Ω Signal generator Matching pads RAM and RAZ ( W) RAM 86.6 Ω U75 Ω 5 Ω The unidirectional RAZ matching pad is particularly suitable for the matching of signal generators. Signal and sweep generators have in most cases a source impedance of 5 Ω. They can be adapted to feed 75 Ω systems by means of the RAZ matching pad involving extremely low power loss. The output voltage displayed on the generator is also valid for the 75 Ω system without requiring correction Ω For the precise measurement of insertion loss and phase shift, the signal generator, DUT and receiver must be well matched to one another. Matching pads allow systems of different characteristic impedance to be connected without involving costly retrofits. 5.8 Typical characteristic Frequency in GHz Frequency response and error limits of power attenuation of the RAM matching pad. Attenuators_dat-bunt_en_758-96_3_v8.indd 5 Rohde & Schwarz Attenuators and Matching Pads, Terminations :34:3

6 6 5 W 3) RBS Ω W see fig. on page 3 4 db db 3 db W (input), W (output) ) db Ω db RDL 5 6 db db 3 db W 5) db Ω db RBU 6 db db 3 db RBU 5 db Ω db W ) 3 db Hz to.4 () GHz see fig. on page 3 Hz to 6 GHz Hz to GHz Hz to GHz Hz to.4 GHz Nominal Frequency range attenuation W ) Power rating 6 db 5 Ω Characteristic impedance DNF Type Order No.. input.5 ( Hz to GHz).5 ( GHz to 4 GHz).4 (4 GHz to 6 GHz)... ( Hz to 4 GHz). (4 GHz to GHz).5 ( GHz to.4 GHz) VSWR N ± db 6) N ±.5 db N ±.5 db ( Hz to.5 GHz) 4) N ±.75 db (.5 GHz to GHz) 4) N ±.5 db 4) N ± db ( Hz to.4 GHz) ) N ±.5 db ( Hz to 4 GHz) ) N ±.6 db (4 GHz to 8 GHz) ) N ±.8 db (8 GHz to.4 GHz) ) N ±.3 db ( Hz to 8 GHz) ) N ±.6 db (8 GHz to.4 GHz) ) N ±.3 db ( Hz to 8 GHz) ) N ±.5 db (8 GHz to.4 GHz) ) Attenuation (N = nominal value) Specifications/Ordering information Attenuators High-Power Attenuators Attenuators_dat-bunt_en_758-96_3_v8.indd :34:3 kw/ µs kw/5 µs 5 kw/5 µs 5 kw/5 µs Max. peak pulse voltage, in line with MIL-STD-348 A, in line with MIL-STD-348 A Connectors 5 mm 85 mm 5 mm, kg 4 mm 89 mm 68 mm,.5 kg 36 mm 4 mm 4 mm,.8 kg 8 mm 77 mm 9 mm,.8 kg.5 mm 55 mm, 69 g Dimensions, weight

7 Terminations Feedthrough Terminations Attenuators_dat-bunt_en_758-96_3_v8.indd 7 W ) W ) 5 Ω 75 Ω W ) W 8) 5 mw 8) W 7) W ), W peak W ) Power rating 5 Ω 75 Ω 5 Ω 75 Ω 5 Ω ±. % 5 Ω 5 Ω 5 Ω 75 Ω Characteristic impedance RAZ RAM RAD RAD.9.55 RAU RNB RNA Type Order No..76 db.76 db 5.7 db Hz to 3.3 GHz Hz to.7 GHz Hz to.7 GHz Hz to 5 MHz Hz to GHz Hz to GHz Hz to 4 GHz Hz to 3 GHz Nominal Frequency range attenuation.76 db ±. db.76 db ±. db.6 ( Hz to GHz). ( GHz to 3.3 GHz), 5.7 db +.5/.5 db Attenuation (N = nominal value).6 ( Hz to GHz). ( GHz to.7 GHz),.6 ( Hz to GHz). ( GHz to.7 GHz), both terminals. ( Hz to MHz) 9).5 ( MHz to 5 MHz) 9).5 ( Hz to. GHz) 9). (. GHz to.5 GHz). (.5 GHz to GHz).5 ( Hz to.3 GHz). (.3 GHz to.5 GHz).4 (.5 GHz to GHz).5 ( Hz to GHz). ( GHz to GHz). ( GHz to 4 GHz). VSWR ) ) At a max. ambient temperature of 3 C; decreasing linearly to W at 3 C ( RDL 5: 5 C). Attenuation change at a temperature change of K:. db/db. At a load change of W:. db/db. 3) Input overload capacity up to 5 W at C ambient temperature (max. min); output overload capacity up to W. 4) Attenuation change at a temperature change of K:.4 db/db. At a load change of W:. db/db. 5) Input overload capacity up to 5 W at C ambient temperature (max. min); output overload capacity up to W. 6) The frequency response of the attenuation is specified on a label on the RBS with a measurement accuracy of. db. 7) Overload capacity % (max. 5 s). 8) Continuous power rating up to a maximum ambient temperature of 7 C; decreasing linearly to W at 3 C. 9) Measured with open-circuit output. ) Ambient temperature 5 C. Matching Pads Rohde & Schwarz Attenuators and Matching Pads, Terminations :34:3 kv Max. peak pulse voltage BNC male, BNC female BNC male, BNC female N male N male Connectors mm 73 mm, 5 g mm 73 mm, 5 g mm 73 mm, 5 g 5.3 mm 5.5 mm, g 4.5 mm 5.5 mm, g 95 mm 5 mm 35 mm, kg.5 mm 35 mm, 36 g mm 46 mm, 65 g Dimensions, weight

8 Service that adds value Worldwide Local and personalized Customized and ﬂexible Uncompromising quality Long-term dependability About Rohde & Schwarz The Rohde & Schwarz electronics group offers innovative solutions in the following business fields: test and measurement, broadcast and media, secure communications, cybersecurity, radiomonitoring and radiolocation. Founded more than 8 years ago, this independent company has an extensive sales and service network and is present in more than 7 countries. The electronics group is among the world market leaders in its established business fields. The company is headquartered in Munich, Germany. It also has regional headquarters in Singapore and Columbia, Maryland, USA, to manage its operations in these regions. Sustainable product design Environmental compatibility and eco-footprint Energy efficiency and low emissions Longevity and optimized total cost of ownership Certified Quality Management ISO 9 Certified Environmental Management ISO 4 Rohde & Schwarz GmbH & Co. KG Rohde & Schwarz training R&S is a registered trademark of Rohde & Schwarz GmbH & Co. KG Trade names are trademarks of the owners PD Version 8. March 7 (fi) Attenuators and Matching Pads, Terminations Data without tolerance limits is not binding Subject to change 5-7 Rohde & Schwarz GmbH & Co. KG 867 Munich, Germany PDP en Regional contact Europe, Africa, Middle East customersupport@rohde-schwarz.com North America 888 TEST RSA ( ) customer.support@rsa.rohde-schwarz.com Latin America customersupport.la@rohde-schwarz.com Asia Pacific customersupport.asia@rohde-schwarz.com China customersupport.china@rohde-schwarz.com Attenuators_dat-bunt_en_758-96_3_v8.indd :34:4

R&S RSC Step Attenuator Specifications

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