Texas Instruments TRF1500 manual Low-Band LNA Stand-Alone Test Guide, Low-Band LNA Gain

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SWRA004A

Low-Band LNA Stand-Alone Test Guide

This section involves measuring the Low Band LNA by itself. All unused ports are terminated into 50Ω. Before measuring the low band LNA by itself the EVM board must be modified as follows: Remove C12 and place C53. The EVM board is now modified to use J15 as the output port of the LNA.

Table 7. Low-Band LNA Parameters

Parameters	Min	Typ	Max	Units

RF Frequency Range	869	881.5	894	MHz
RF Input Power		-30		dBm
Gain		15.5		dB
RF Input Return Loss		-6.5		dB
RF Output return loss		-14		dB
Isolation		-17.2		dB
Noise Figure		1.8		dB
Third Order Input Intercept Point(IIP3)		-3		dBm
1dB Input compression Point		-13.5		dBm

Low-Band LNA: Gain

Control state: 011000

The LNA gain is measured from the input port J10 through the output port J15. The measurement is performed using a network analyzer.

1)Set up the network analyzer to measure the low band RF frequency range (see Table 7).

2)Set the power range to -35 dBm to -20 dBm,

a)Set the input power to -30 dBm.

3)Perform a full two-port calibration.

4)Connect the low band LNA input port J10 and output port J15 to the S11 and S22 port of the network analyzer respectively.

5)Set the network analyzer to measure S21.

6)Measure the gain

Low-Band LNA: Input Return Loss

Control state: 011000

60	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 Tables FiguresAbstract TRF1500 Integrated Dual-Band RF Receiver User’s GuideIngl E Chip Anal OG AS E B Product SupportWorld Wide Web Related DocumentationIntroduction Board Design and Impedance Matching Design ConsiderationsExternal Components TRF 1500 Dual-Band Receiver TRF1500 Dual-Band Receiver Block DiagramPin Number Name Description Pin DescriptionsStrong Signal Control State and the Corresponding Active Circuits TRF1500 Control StateCascaded Block Diagram of the Low-Band Receiver Section Low-Band LNA Turn on Time Low-Band LNALow-Band LNA Output Low-Band LNA InputSurface Acoustic Wave SAW Filter Low-Band LNA Output ConfigurationLow-Band Mixer RF Input Low-Band MixerLow-Band if Output Low-Band Mixer LO InputLow-Band LO Buffer Amplifier Output Low-Band if Output ConfigurationLow-Band Buffer Amplifier Output Configuration LB LNA, LB Mixer, SAW Filter, and LB if Amp Parameters LOW-Band Cascaded Power Conversion GainLow-Band Cascaded Test Guide Low-Band Cascaded Power Conversion Gain Reduction Low-Band Cascaded Noise Figure TRF1500 Integrated Dual-Band RF Receiver User’s Guide Low-Band Cascaded LO Input Return Loss Low-Band Cascaded RF Input Return LossLow-Band Power Leakage LO In to RF LOW Band LO Buffer Output PowerLow-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 LO Input High-Band RF InputHigh-Band LO Frequency Doubler Driven Configuration High-Band if Output High-Band if Output ConfigurationHigh-Band LO Buffer Amplifier Output High-Band LO Buffer Amplifier Output ConfigurationHB LNA, HB mixer, HB if amp High-Band Cascaded Power Conversion GainHigh-Band Cascaded Test Guide 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 Third Order Input Intercept Point IIP3 High-Band Cascaded Power Leakage LO In to RFHigh-Band Cascaded 1dB Input Compression Point High-Band Cascaded 2X2 Spur Performance High Band 3X3 Spur Performance Low-Band and High-Band Transmit Mixer RF Input Low-Band and High-Band TransmitLow- and High-Band Transmit Mixer Low- and High-Band Transmit Mixer if Output Configuration Low- and High-Band Transmit Mixer RF Input ConfigurationLow-Band Transmit Performance Parameters Low-Band Transmit Mixer Power Conversion GainLow-Band Transmit Mixer Test Guide Low-Band Transmit Mixer Noise Figure Low-Band Transmit Mixer Input Return Loss Low-Band Transmit Mixer Power Leakage TX In to LO Low-Band Transmit Mixer Power Leakage LO In to TXLow-Band Transmit Mixer 1dB Input Compression Point See Appendix a Test Bench Setups See Appendix a Test Bench Setups High-Band Transmit Mixer Performance Parameters High-Band Transmit Mixer Test GuideLow-Band LNA Parameters Low-Band LNA Stand-Alone Test GuideLow-Band LNA Gain Low-Band LNA Input Return LossLow-Band LNA 1dB Input Compression Point Low-Band LNA Output Return LossLow-Band LNA Isolation 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 Parameters Low-Band Receiver Mixer Power Conversion GainLow-Band Receiver Mixer Stand-Alone Test Guide Low-Band Receiver Mixer Input Return Loss Low-Band Receiver Mixer Noise Figure Low-Band Receiver Mixer Power Leakage LO In to RFTRF1500 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