CN-0248

Circuit Note

Rev. 0 | Page 6 of 6

The signal metrics on the vector signal generator must match

the metrics on the VSA software. When the software starts up, it

should display the IQ Constellation pane and the Spectrum

pane. Add the information window on the VSA software by

taking the following steps:

1. Click Display

2. Click Layout

3. Select Grid 2×2

By default, the other two panes that have appeared should be an

Error Vector vs. Time and the information window, Syms/Errs. If

this is not the case, do the following:

1. Double-click the title of any pane

2. Select Syms/Errs in the window that appears

The Syms/Errs pane presents a number of results, including

EVM. The software should be locked onto the signal and

reporting an EVM number.

The AGC setpoint, maximum gain, and filter bandwidth can all

be set with the respective control software of the individual devices.

Power control at the input of the ADL5336 can be done via a

power sweep on the vector signal analyzer. A −80 dBm to almost

+16 dBm sweep was performed to test the receiver in this test

setup. The gain on the ADRF6510 was always set to achieve a

1.5 V p-p differential output level, assuming there was sufficient

gain to achieve this. In some cases, for very small signal levels, the

ADRF6510 did not have enough gain to reach the 1.5 V p-p

differential level.

LEARN MORE

CN-0248 Design Support Package:

http://www.analog.com/CN0248-DesignSupport

Ardizzoni, John. A Practical Guide to High-Speed Printed-

Circuit-Board Layout, Analog Dialogue 39-09, September 2005.

MT-031 Tutorial, Grounding Data Converters and Solving the

Mystery of "AGND" and "DGND." Analog Devices.

MT-073 Tutorial, High Speed Variable Gain Amplifiers (VGAs).

Analog Devices.

MT-101 Tutorial, Decoupling Techniques, Analog Devices.

ADIsimPLL Design Tool

ADIsimRF Design Tool

AN-0996 Application Note. The Advantages of Using a

Quadrature Digital Upconverter (QDUC) in Point-to-Point

Microwave Transmit Systems. Analog Devices.

AN-1039 Application Note. Correcting Imperfections in IQ

Modulators to Improve RF Signal Fidelity. Analog Devices.

CN-0134 Circuit Note, Broadband Low Error Vector Magnitude

(EVM) Direct Conversion Transmitter, Analog Devices

Data Sheets and Evaluation Boards

ADRF6510 Data Sheet and Evaluation Board

ADL5387 Data Sheet and Evaluation Board

ADL5336 Data Sheet and Evaluation Board

ADF4350 Data Sheet and Evaluation Board

AD9248 Data Sheet and Evaluation Board

ADRF6516 Data Sheet and Evaluation Board

AD8130 Data Sheet and Evaluation Board

REVISION HISTORY

4/12—Revision 0: Initial Version

(Continued fromfirst page)Circuits from the Lab circuits are intended only for use with Analog Devices products and are the intellectual property of Analog Devices or its licensors. While you

may use the Circuits from the Lab circuits in the design of your product, no other license is granted by implication or otherwise under any patents or other intellectual property by

application or use of the Circuits from the Lab circuits. Information furnished by Analog Devices is believed to be accurate and reliable. However, Circuits from the Lab circuits are supplied

"as is" and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability, noninfringement or fitness for a particular

purpose and no responsibility is assumed by Analog Devices for their use, nor for any infringements of patents or other rights of third parties that may result from their use. Analog Devices

reserves the right to change any Circuits from the Lab circuits at any time without notice but is under no obligation to do so.

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