5091 3661E A_87405A A 87405A

User Manual: A_87405A

Open the PDF directly: View PDF .
Page Count: 4

Features

• 24 dB Gain

• 6.5 dB Noise Figure

• Probe-Power Bias Connection

• Compact Size

Benchtop/general purpose use

Used alone on the bench, the Agilent Technologies

87405A can be added to any application in which

additional gain and low noise are required. The

compact and inexpensive 11899A probe power

supply is a suitable source of DC bias in remote

applications.

The Agilent 87405A preamplifier brings reliable

gain and low noise figure to measurement systems

to improve overall system performance and reduce

systematic errors. With its compact size and con-

venient probe-power bias connection, the 87405A

is ideal for use as the front end preamplifier for a

variety of Agilent instruments such as the 8590E

series of portable spectrum analyzers. The 87405A

is the recommended preamplifier for use with the

8594E Noise Figure Measurement Solution. The

rugged design along with its insertable config-

uration of connectors makes the 87405A ideal for

test port applications.

Agilent 87405A

Preamplifier 10 MHz to 3 GHz

Data Sheet

Discontinued Product Information

— For Support Reference Only —

Information herein, may refer to products/services no longer supported.

We regret any inconvenience caused by obsolete information. For the

latest information on Agilent’s test and measurement products go to:

www.agilent.com/find/products

In the US, call Agilent Technologies at 1-800-829-4444

(any weekday between 8am–5pm in any U.S. time zone)

World-wide Agilent sales office contact information is available at:

www.agilent.com/find/contactus

Improve noise figure measurements

Add a preamplifier to noise figure measurement

systems to significantly lower system noise figure.

The noise figure of the system is dominated by the

noise figure of the preamplifier.

Fnew = F pa + Fsys - 1

Gpa

Where F and G are noise figure and preamplifier

gain, both in linear terms.

NFsys = 10 log (Fsys) in dB

For systems having a single preamplifier, where

the gain of the preamplifier is greater than or

equal to the spectrum analyzer noise figure, the

system noise figure approximately equals the noise

figure of the preamplifier.

Increase sensitivity and speed

Adding preamplifiers to measurement systems can

improve sensitivity for measuring low-level signals.

Boost the sensitivity of your Agilent spectrum ana-

lyzer 15 to 25 dB by using the 87405A preamplifier.

Alternatively, better sensitivity can be traded for

measurement speed. Spurious tests often require

narrow resolution bandwidths to reduce the noise

floor of the analyzer, allowing low-level signal

detection. An analyzer with low noise figure allows

you to use a wider resolution bandwidth, yet

achieve the same sensitivity. Sweeptimes can

improve one hundred fold for each decade increase

in bandwidth. The 87405A preamplifier has gain

and noise figure characteristics that optimize

dynamic range and sensitivity.

Gain (dB)

0.01 0.5 1 1.5 2 2.5 3

Frequency (GHz)

Noise Figure (dB)

0.01 0.5 1 1.5 2 2.5 3

Frequency (GHz)

Output Power (dBm) @ 1 dB compression (dB)

0.01 0.5 1 1.5 2 2.5 3

Frequency (GHz)

87405A product specifications

Frequency Range 10-3000 MHz

Small Signal Gain 22-27 dB min-max

Gain Flatness ±1.25 dB 50-3000 MHz

±2.0 dB 10-3000 MHz

Output Power (1 dBC) 4 dBm

Noise Figure 6.5 dB 10-2000 MHz

7.5 dB 2000-3000 MHz

Third Order Intercept (TOI) 15 dBm typical

Harmonics 20 dBc typical

(@ +4 dBm output power)

Input VSWR 1.5:1 10-1000 MHz

1.7:1 1000-2000 MHz

2.0:1 2000-2900 MHz

2.2:1 2900-3000 MHz

Output VSWR 2.0:1

Impedance 50 ohms nominal

Reverse Isolation 60 dB typical

Survival Input Power (max) +13 dBm typical

Power Dissipation 1.2 W nominal

Temperature (operating) 0 to +55°C

(storage) -40 to +70°C

Specifications describe the instrument’s warranted performance over the tempera-

ture range 0°C to +55°C (unless otherwise noted). All specifications apply after

the instrument’s temperature has been stabilized after one hour continuous oper-

ation. Typical characteristics are intended to provide information useful in apply-

ing the instrument by giving typical but nonwarranted performance parameters.

These are denoted as “typical” or “nominal” and apply over the temperature

range 0°C to +55°C.

Caution: Electrostatic Discharge (ESD) can damage or destroy electronic compo-

nents. It is recommended that this preamplifier, like other electronic components,

be installed and operated at a static-free workstation or in an environment where

precautions against ESD have been implemented.

General specifications

Bias Voltage and Current 15 ±6% Vdc @ 80 mA

nominal

Connectors RF Type N(f) in, N(m) out

DC Probe Power Connector (f)

Weight net 270 g, shipping 510 g

Environmental information

EMC IEC 801-2/1991 IEC 801-4/1988

IEC 801-3/1984 CISPR-11/1990

Moisture Resistance 65°C at 95% RH for 10 days per

Mil-Std-883C method 1004.5

Random Vibration 5.2 G (rms) to 2000 Hz per Mil-Std-

883C method 2026-11A

Shock 1500 G (peak), 0.5 ms per Mil-Std-

883C method 2002.3-B

Altitude, non-operating 15,000 meters per Mil-Std-883C

method 1001-C .

Ordering information

87405A Preamplifier 10 MHz to 3 GHz

11899A Probe Power Supply

(must order one option)

Option 100 100 V operation

Option 120 120 V operation

Option 220 220 V operation

Option 240 240 V operation

Related literature Pub. Number

8590E Series Technical Data Sheet 5091-3271E

11899A Technical Data Sheet 5091-0754E

Noise Figure Measurement Accuracy

Application Note 57-2 5952-3706

57.3

124.9

28.0

www.agilent.com

Agilent Technologies’ Test and Measurement Support, Services, and Assistance

Agilent Technologies aims to maximize the value you receive, while minimizing

your risk and problems. We strive to ensure that you get the test and measure-

ment capabilities you paid for and obtain the support you need. Our extensive

support resources and services can help you choose the right Agilent products

for your applications and apply them successfully. Every instrument and system

we sell has a global warranty. Two concepts underlie Agilent’s overall support

policy: “Our Promise” and “Your Advantage.”

Our Promise

Our Promise means your Agilent test and measurement equipment will meet

its advertised performance and functionality. When you are choosing new

equipment, we will help you with product information, including realistic per-

formance specifications and practical recommendations from experienced test

engineers. When you receive your new Agilent equipment, we can help verify

that it works properly and help with initial product operation.

Your Advantage

Your Advantage means that Agilent offers a wide range of additional expert test

and measurement services, which you can purchase according to your unique

technical and business needs. Solve problems efficiently and gain a competitive

edge by contracting with us for calibration, extra-cost upgrades, out-of-warranty

repairs, and onsite education and training, as well as design, system integration,

project management, and other professional engineering services. Experienced

Agilent engineers and technicians worldwide can help you maximize your produc-

tivity, optimize the return on investment of your Agilent instruments and systems,

and obtain dependable measurement accuracy for the life of those products.

United States: Korea:

(tel) 800 829 4444 (tel) (080) 769 0800

(fax) 800 829 4433 (fax) (080) 769 0900

Canada: Latin America:

(tel) 877 894 4414 (tel) (305) 269 7500

(fax) 800 746 4866 Taiwan:

China: (tel) 0800 047 866

(tel) 800 810 0189 (fax) 0800 286 331

(fax) 800 820 2816 Other Asia Pacific

Europe: Countries:

(tel) 31 20 547 2111 (tel) (65) 6375 8100

Japan: (fax) (65) 6755 0042

(tel) (81) 426 56 7832 Email: tm_ap@agilent.com

(fax) (81) 426 56 7840 Contacts revised: 09/26/05

For more information on Agilent Technologies’ products, applications or services,

please contact your local Agilent office. The complete list is available at:

www.agilent.com/find/contactus

Product specifications and descriptions in this document subject to change

without notice.

Printed in USA, July 11, 2006

5091-3661E

www.agilent.com/find/emailupdates

Get the latest information on the products and applications you select.

Agilent Email Updates

www.agilent.com/find/agilentdirect

Quickly choose and use your test equipment solutions with confidence.

Agilent Direct

Agilent

Open

www.agilent.com/find/open

Agilent Open simplifies the process of connecting and programming

test systems to help engineers design, validate and manufacture electronic

products. Agilent offers open connectivity for a broad range of system-

ready instruments, open industry software, PC-standard I/O and global

support, which are combined to more easily integrate test system

development.

5091 3661E A_87405A A 87405A

Navigation menu

Versions of this User Manual:

Views

Navigation