Texas Instruments TRF1500 manual High-Band Cascaded Noise Figure

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SWRA004A

High-Band Cascaded: Noise Figure

Control state: 111001

SEE APPENDIX A: TEST BENCH SETUPS

Test setup Figure 22

The cascaded Noise Figure (NF) is measured at the EVM Low Band IF output port, J21. The measurement is performed using an HP8970B Noise Figure Meter. The IF output of the mixer is converted from differential to single ended using a transformer balun. The noise figure meter requires a special setup and calibration since the RF source and receive frequencies are different.

Set up the noise figure meter as follows:

1)Special Function 1.4 sets the noise figure meter to measure variable IF and fixed LO frequencies.

2)The IF start, stop, and step size frequencies are set to 100MHz, 120MHz, and 5MHz respectively.

3)Set the smoothing to 16 or above.

4)Ensure that the Excess Noise Ratio (ENR) Table on the Noise Source head in use is entered on the NF meter.

a)On the front panel, press the ENR button.

b)Check the ENR value by pressing the Enter button or enter the ENR value for each frequency.

c)After entering the ENR for the desired frequency, press the Frequency button on the front panel to exit.

5)To calibrate the NF Meter:

a)Connect the Noise Source directly to the NF meter; press the calibration button twice.

b)Next, press the Noise Figure and Gain Button. The corrected LED just above the button should be lit.

c)Calibration is complete. Enter the desired IF frequency to measure.

Next, the external equipment Loss is considered (RF cable,

Transmission line, filter and circulator).

6)The losses are entered in the Noise Figure Meter by using special function 34.x.

TRF1500 Integrated Dual-Band RF Receiver User’s Guide

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Contents TRF1500 Integrated Dual-Band RF Receiver User’s Guide Important Notice Trademarks PIC Telephone Contents Appendix a Test Bench Configuration Figures TablesTRF1500 Integrated Dual-Band RF Receiver User’s Guide AbstractProduct Support Ingl E Chip Anal OG AS E BRelated Documentation World Wide WebIntroduction Design Considerations External ComponentsBoard Design and Impedance Matching TRF1500 Dual-Band Receiver Block Diagram TRF 1500 Dual-Band ReceiverPin Descriptions Pin Number Name DescriptionStrong Signal TRF1500 Control State Control State and the Corresponding Active CircuitsCascaded Block Diagram of the Low-Band Receiver Section Low-Band LNA Low-Band LNA Turn on TimeLow-Band LNA Input Low-Band LNA OutputLow-Band LNA Output Configuration Surface Acoustic Wave SAW FilterLow-Band Mixer Low-Band Mixer RF InputLow-Band Mixer LO Input Low-Band if OutputLow-Band if Output Configuration Low-Band LO Buffer Amplifier OutputLow-Band Buffer Amplifier Output Configuration LOW-Band Cascaded Power Conversion Gain Low-Band Cascaded Test GuideLB LNA, LB Mixer, SAW Filter, and LB if Amp Parameters Low-Band Cascaded Power Conversion Gain Reduction Low-Band Cascaded Noise Figure TRF1500 Integrated Dual-Band RF Receiver User’s Guide Low-Band Cascaded RF Input Return Loss Low-Band Cascaded LO Input Return LossLOW Band LO Buffer Output Power Low-Band Power Leakage LO In to RFLow-Band Cascaded Third Order Input Intercept Point IIP3 Low-Band Cascaded 1dB RF Input Compression Point Low-Band Cascaded 1dB Blocking Point Block Diagram of the High-Band Receiver Section High-Band RF Input High-Band LO InputHigh-Band LO Frequency Doubler Driven Configuration High-Band if Output Configuration High-Band if OutputHigh-Band LO Buffer Amplifier Output Configuration High-Band LO Buffer Amplifier OutputHigh-Band Cascaded Power Conversion Gain High-Band Cascaded Test GuideHB LNA, HB mixer, HB if amp High-Band Cascaded Power Conversion Gain Reduction High-Band Cascaded Image Rejection High-Band Cascaded Noise Figure High-Band Cascaded RF Input Return Loss High-Band LO Buffer Output Power High-Band Cascaded Power Leakage LO In to RF High-Band Cascaded Third Order Input Intercept Point IIP3High-Band Cascaded 1dB Input Compression Point High-Band Cascaded 2X2 Spur Performance High Band 3X3 Spur Performance Low-Band and High-Band Transmit Low- and High-Band Transmit MixerLow-Band and High-Band Transmit Mixer RF Input Low- and High-Band Transmit Mixer RF Input Configuration Low- and High-Band Transmit Mixer if Output ConfigurationLow-Band Transmit Mixer Power Conversion Gain Low-Band Transmit Mixer Test GuideLow-Band Transmit Performance Parameters Low-Band Transmit Mixer Noise Figure Low-Band Transmit Mixer Input Return Loss Low-Band Transmit Mixer Power Leakage LO In to TX Low-Band Transmit Mixer Power Leakage TX In to LOLow-Band Transmit Mixer 1dB Input Compression Point See Appendix a Test Bench Setups See Appendix a Test Bench Setups High-Band Transmit Mixer Test Guide High-Band Transmit Mixer Performance ParametersLow-Band LNA Input Return Loss Low-Band LNA Stand-Alone Test GuideLow-Band LNA Gain Low-Band LNA ParametersLow-Band LNA Output Return Loss Low-Band LNA IsolationLow-Band LNA 1dB Input Compression Point Low-Band LNA Noise Figure Low-Band LNA Third Order Input Intercept Point IIP3 TRF1500 Integrated Dual-Band RF Receiver User’s Guide Low-Band Receiver Mixer Power Conversion Gain Low-Band Receiver Mixer Stand-Alone Test GuideLow-Band Receiver Mixer Parameters Low-Band Receiver Mixer Input Return Loss Low-Band Receiver Mixer Power Leakage LO In to RF Low-Band Receiver Mixer Noise FigureTRF1500 Integrated Dual-Band RF Receiver User’s Guide Low-Band Receiver Mixer 1dB RF Input Compression Point 12.2 11.4 10.4 ←1dB Compression Point TRF1500 Integrated Dual-Band RF Receiver User’s Guide Appendix a Test Bench Configuration Test Bench Setup Noise Figure Test Bench Setup Power Leakage RF In to LO In Measurements Test Bench Setup LNA 1dB Input Compression Point