t/r module test...rx enable / tx enable pc with trm control sw rf measurement data trigger...

T/R Module Test

TRM Module

l TRM = Transmitter Receiver Module

l Communication to the module is essential

l Each module is individually tested

l Test equipment must be protected due to high Tx power

l All Tx tests are pulsed

l Example designs:

T/R Module Test Italy 2017

Typical Tests


Rxl S-parameter for all

attenuation and phasevalues

l Noise figurel Compression pointl Intermodulationl Out of band rejectionl Spuriousl …

Txl S-parameter for all

attenuation and phasevalues

l Output power vs. input powerl Saturated output powerl Pulse parametersl Power added efficiencyl Spurious and harmonicsl Intermodulation

Generall EEPROM programmingl Sensor temperaturl 1,024 to 65,536 states

per frequency

⇒ Typically 25.000 measurement values for full characterizationof one TRM module

l Full characterization of 1 TRM requires 1 week or more

l Automatic full characterization can easily take 12 hoursand requires SW test routines

Manual or Automated Test


TRM Control Interface

DUTTR Module

control of gain / phase

DUT power lines

TX in / RX out

Antenna connector

RX enable / TX enable

PC with TRM control SW

RFmeasurement

data

Trigger

Communication

Voltage / currentmonitoring

T/R Module manual Test Solution for R&D

ZVA+ZVAX-TRMı Device from the shelfı Ideal for R&D applicationı TX and RX tests can be performed sequentiallyı Complete control via ZVA GUI


ZVAX-TRM

Meas 2

Out

Ref 2

Out

Src 2

In

Meas 1

Out

Ref 1

Out

Src 1

In

Src 4

Out

Ref 4

Out

Src 4

In

Ref 4

In

Src 3

Out

Ref 3

Out

Src 3

In

Ref 3

In

Port 2

Port 1

high

power

couplerpath

accesscombinerpulse

modulator amplifier

ZVAX-TRM


Special Features of R&S®ZVAX-TRM

ı 3 pulse modulators in 3 source paths� Bidirectional pulsed measurements

ı Two combiners � Intermodulation measurements in two directions, pulsed intermodulation measurements

ı Internal LNA for noise figure testı Internal power amplifier

� High output power under all conditionsı Switchable access to source and receiver paths

� Additional power amplifiers for high power applications� Additional LNA for noise figure measurement

ı R&S®ZVA with 4 sources� Fast intermodulation and mixer measurements


Intuitive User Interface


TRM Test Solution for Production


R&S ZVA24: 24GHz Network Analyzer

R&S OSP-TRM Multiplexing, Pulse Modulator, Switching, Combiner , LNA...

R&S TSVP PXI Platform: Communication to Device Under Test (DUT), trigger generation, system controller …

DUT power supplye.g. HMP4040

Customer Specific Test Sequencer TS6710 (Low Rack Height)

Automated Test e.g. TS6710


OSP-TRM – High Customization

ı Platform for high flexibilityı Combinersı Pulse modulatorsı Amplifiersı Filtersı Multiport switchesı Controlled via sequencer


ı ZVA + OSP-TRMı Customization according to the requirementsı TX and RX test without reconnection of the T/R moduleı Control Software with prepared test casesı Control via external PCı Digital control of the DUT

ı Test of several DUTs in parallel

T/R Module Test Solution for Production


Test Suite TRM-LIB

– Features


Test Suite TRM-LIB – DUT Control

ı Support of devices without and with control(e.g. different DUT states)

ı Digital control plugin programmed in C# for

� Communication with DUT

� Trigger generation

ı Example C# source code enclosed, Adaptation by customerto his DUT

� Programming of the DUT actions to be carried out at eachstep

� Adaptation by customer or R&S


Requirements for the RF Equipment


High Performance for Intermodulation

-120

-105

-90

-75

-60

-45

-30

-15

0 0

1

Ch1 Arb Center 1 GHz Pwr 10 dBm Span 5 MHz

Trc1 b2 dB Mag 15 dB / Ref 0 dBm

b2

Mkr 1 1.000500 GHz -4.664 dBm Mkr 2 999.50000 MHz -4.652 dBm Mkr 3 998.50000 MHz -98.019 dBm Mkr 4 1.001500 GHz -99.926 dBm

Mkr 1Mkr 2

Mkr 3 Mkr 4


>90 dBcIP3 40 dBm

Typical Measurement Tasks for TR-Module Test

ı Transmitter (TX)� Transmission / reflection

� Low power� Saturated power

� Pulse profile� Harmonics� Spurs


ı Receiver (RX)� Transmission / reflection

� Low power� Saturated power

� Spurs� Intermodulation� Noise figure

ı Number of states to be tested� All combinations of phase and attenuator settings referred to basic setting� Up to 1024 (5 bit) or 65536 (8 bit) combinations

High Output Power under all Conditions with Preamplifier

-10

-5

0

5

10

15

20

25

30

0

1

Pb 20 dBm Ch1 fb Start 500 MHz Stop 20 GHz

No_OPTION a1(P1s) dB Mag 5 dB / Ref 0 dBm PCai Smo

a1(P1s)

M1 1.000000 GHz 18.414 dBm M2 18.000000 GHz 11.006 dBm

M1

M2

-10

-5

0

5

10

15

20

25

30

0

2


Pumo a1(P1s) dB Mag 5 dB / Ref 0 dBm PCai Smo

a1(P1s)

M1 1.000000 GHz 10.849 dBm M2 18.000000 GHz 2.2145 dBm

M1

M2

-10

-5

0

5

10

15

20

25

30

0

3


Preamp_Pumo a1(P1s) dB Mag 5 dB / Ref 0 dBm PCai Smo

a1(P1s)

M1 1.000000 GHz 19.279 dBm M2 18.000000 GHz 16.150 dBm

M1M2

-10

-5

0

5

10

15

20

25

30

0

4


Pumo_Comb_PA a1(P1s) dB Mag 5 dB / Ref 0 dBm PCai Smo

a1(P1s)

M1 1.000000 GHz 16.124 dBm M2 18.000000 GHz 11.080 dBm

M1

M2


Up to 10 dBm @ 18 GHzwith pulse modulator and combiner

no option pulse mod only

pulse mod + preamp

pulse mod + preamp + combiner

Pulsed Measurement Capabilities

ı Average pulse measurements� Measurement versus power and frequency� Receiver sampling time > pulse period� Measures the average power of several pulses

ı Point in pulse measurement (more accurate)� Measurement versus power and frequency� Receiver sampling time < pulse width � Measures the peak power during one pulse

ı Pulse profile measurement� Measurement of the pulse versus time� Receiver sampling time << pulse width (ZVA-K7)� Measures the time dependent behavior during one pulse

timeMeasurement time / point

timetriggerdelay

Measurement time / point

timetrigger delay

data points

Measurement time / point


t

A

f1 f2 f3 f4 f5

f1 f2 f3 f4 f5

t

τ

Point in Pulse Measurement

ı Frequency or power swept measurementsı Pulse width > sampling timeı Accurate power measurements during “On” time of the pulseı Sampling time = (1..2) / IFBwı Sampling time @5 MHz IFBw abt. 420 ns


Pulse Profile with R&S®ZVA‘s Fast RAM-Mode


Pulse Profile with R&S®ZVA‘s Fast RAM-Mode

ı Measurement on one pulse with high sampling rate of 80 MHz and up to 30 MHz of bandwidth

ı Time resolution 12.5 ns

ı No loss of dynamic range by desensitization

ı No re-calibration required, when pulse parameters are changed

ı Measurements with single, double pulses and pulse trains possible

ı Correction for delay caused by DUT with high electrical length


Internal Pulse Generators


2 independent pulse generators

Minimum pulse width 12,5 ns

Single pulse and pulse trains

Individual delay, pulse width and polarity

Noise Figure Measurement with R&S®ZVA

Noise Figure Calculation:


=

output

inputDUT SNR

SNRlog10NF

4342143421measNF:

noise

signal

dataCAL:

noise

signal

output

output

input

input

P

Plog10

P

Plog10

==

−

=

Tests of the RX Path


2nd source for intermodulation combiner to generate 2-tone signal

LNA for noise figure test

Measurement Results RX Path

-40-30-20-10

010203040

0

1

P1 -30 dBm Ch1 fb Start 2 GHz Stop 3 GHz

Trc11Trc12Trc13Trc14

S21S11S22S21

dB MagdB MagdB MagPhase

10 dB /10 dB /10 dB /1° /

Ref 0 dB Ref 0 dB Ref 0 dB Ref 27.8°

Ca? PCao OffsCa? PCao OffsCa? PCao OffsCa? PCao Smo Offs

•M1 2.500000 GHz 28.885 dB S21 M1

-60-45-30-15

015304560

0

2


Trc2Trc4Trc7

UTOIM3LOIP3MO

Trc3Trc5

LTOIM3UO

IP3MO

-105

-90

-75

-60

-45

-30

-15

0

15

0

3

P1 -10 dBm Ch3 Arb Rec Start 998.5 MHzStop 1.0025 GHz

Trc6 b2(P1s) dB Mag 15 dB / Ref 0 dBm

b2(P1s)

262728293031323334

30

4

fb 2 GHzCh4 P1 Start -15 dBm Stop 2 dBm

Trc8Trc9Trc10Trc15

UTOIM3UOIP3MOS21

dB MagdB MagdB MagdB Mag

20 dB /20 dB /20 dB /1 dB /

Ref 0 dBm Ref 0 dBm Ref 0 dBm Ref 30 dB

PCal Off PCal Off PCal OffCa? PCal Off

M1 -7.50 dBm 34.866 dBm S21

M1

-2

0

2

4

6

8

10

12

14

0

5


Trc1 NF21 dB Mag 2 dB / Ref 0 dB Cal NCal PCal Smo

M1 2.500000 GHz 3.9015 dB NF21

M1


S-parameters vs. frequency

Intermodulation parameters vs. power

Intermodulation parameters vs. frequency

Noise figure

S21 vs power

Intermodulation spectrum

Test of the TX Path


13.616.619.622.625.628.631.634.637.6

25.6

1Trc1Trc2Trc7Trc8

S21S21S11S22

dB MagPhasedB MagdB Mag

10 dB /3° /10 dB /10 dB /

Ref 0 dB Ref 25.6° Ref 0 dB Ref 0 dB

Ca? OffsCa? Smo OffsCa? OffsCa? Smo Offs

M1M1M1M1

2.5000002.5000002.5000002.500000

GHz GHz GHz GHz

28.938 24.404-19.614-22.484

dB °

dB dB

S21

M1M1

M1

M1

25.5

26.0

26.5

27.0

27.5

28.0

28.5

29.0

29.5

28.5

2Trc3Trc4Trc9

S21S21b2(P1s)

dB MagPhasedB Mag

0.5 dB /1° /2 dB /

Ref 28.5 dB Ref 146.8° Ref 18 dBm

Cal Off OffsCal Off Smo OffsOffs

S21

-180

-135

-90

-45

0

45

90

135

180

0

TRG

3Trc5Trc10Trc11

b2(P1s)S21S21

dB MagdB MagPhase

10 dB /10 dB /45° /

Ref 0 dBm Ref 0 dB Ref 0°

Cal OffCal Off

S21

-85

-70

-55

-40

-25

-10

5

20

35

-40

4Trc12Trc13Trc15

UTOIM3UOIP3MO

dB MagdB MagdB Mag

15 dB /15 dB /5 dB /

Ref -40 dBm Ref -40 dBm Ref 35 dBm

IM3UO

Measurement Results TX Path

S-parameter vs. frequency(pulsed )

S21 vs time(pulse profile )

S-parameter vs. power(pulsed )

Intermod. vs power


-40

-20

0

20

40

0

1Trc11Trc12Trc14

S21S11S21

dB MagdB MagPhase

10 dB /10 dB /2° /

Ref 0 dB Ref 0 dB Ref 74°

Ca? PCao OffsCa? PCao OffsCa? PCao Smo Offs

M1 2.500000 GHz 21.742 dB S21 M1

-25

-15

-5

5

15

0

2Trc2Trc20Trc21

S12S22S12

dB MagdB MagdB Mag

5 dB /10 dB /0.3 dB /

Ref 0 dB Ref 0 dB Ref 12.9 dB

Ch2Ch2Ch8

Ca? PCal OffCa? PCal OffCal Off

S12

-80

-40

0

40

80

0

3Trc6Trc9

b2(P1s)IM3UO

dB MagdB Mag

15 dB /20 dB /

Ref 0 dBm Ref 0 dBm

Ch6Ch4

PCal Off PCal Off

-50

-30

-10

10

30

0

TRG

4Trc4Trc19

S12S12

PhasedB Mag

45° /10 dB /

Ref 0° Ref 0 dB

Cal OffCal Off

M1 17.6800 µs ------S12

M1

-2.5

1.5

5.5

9.5

13.5

5.5

5Trc1 NF21 dB Mag 2 dB / Ref 5.5 dB Cal NCal PCal Smo

M1 2.186000 GHz 6.0605 dB NF21

M1

-90

-70

-50

-30

-10

-50

6Trc17 b1(P4s) dB Mag 10 dB / Ref -50 dBm

M1 2.500000 GHz ------b1(P4s)

M1

Measurement of complete DUT

S21, S11

Intermod.

Noise Fig


S12, S22

Pulse profile

Intermod.

RX Path TX Path

T/R Module Test - Need for Accuracy and Speed

ı Measurement of S-parameters acc. mag & phaseı Reason is test of accuracy of attenuator and phase shifterı Required accuracy depends on resolution e.g. of digital phase shifter

ı Phase shifters with 4..8 bits of resolution� 6-bit phase shifter � 360° / 64 = 5,625° resolution� 8-bit phase shifter� 360° / 256 = 1,4 ° resolution

ı Typical T/R modules work with 5- or 6-bit phase shifters, new designs use 8-bit phase shifters

ı Attenuator typ. 0.25 dB resolution


Testing with high Speed

Two different test approaches

Performing CW Sweeps and switching the gain and attenuation states

� Used when frequency switching takes longer than switching DUT states� Widely used so far� Disadvantage: parameters have to be rearranged for documentation

Performing frequency sweeps and switch after every sweep the DUT states

� Used when frequency switching time is shorter than switching DUT states� Advantage: easy documentation of test results� Prefered solution for the customer


Gain versus Frequency and Attenuation States


Switching Times of ZVA

Switching Time ZVA CW SweepSettings:ı CW frequency 5 GHzı Meas bandwidth 10 MHzı Time/Pt 2,5 us


Switching time ZVA freq. sweepSettings: ı Start 6 GHz Stop 10 GHz ı Step width 1 MHzı Meas bandwidth 100 kHzı Freq. switching time

+ sampling time 24 us

Proposed Scenario Example

ı Switching time CW sweep 3 usı Switching time freq. sweep 12 usı Sampling time (100 kHz) 12 usı State switching time (sst) x us

ı Test time CW sweep� Tswcw (sst) + tsampl = 3 us + 12 us = 15 us

ı Test time freq sweep� tswfreq (sst) + tsmpl= 12 us +12 us = 24 us

⇒ Frequency sweep is faster as soon as state switching time > 12 us⇒ Bottleneck for pulse measurements is pulse period


Typical Pulse Scenarios

ı RX test in un-pulsed modeı TX test in pulsed mode (point in pulse)ı Pulse width typically 10 us or wider

� Wide enough for measurement bandwidth of 100 kHz� When pulse width is wider, meas.-bandwdith can be reduced

ı Duty cycle 10% or less� Otherwise DUT will heat up� Typically test time / point > 100 us

⇒ in most cases VNA - switching time of frequency sweep is much faster than DUT - state switching time + pulse period

⇒ state switching was a typical scenario in the past when VNA synthesizers were slow


Increase of Test Speed

Multiple Measurements during one PulseProblem: Long measurement time due to low pulse repetition rate and long „ON“ - time

Solution:Several measurements can happen during one pulse with pulse widthof e.g.100 us

ı Test time = switching time + sampling time ı Sampling time 100 kHz IFBw 12 us; ı Freq switching time 12 usı Frequency sweep: 12 us + 12 us = 24 us

=> 4 measurements during one pulse


Multiple Measurements during one Pulse

ı Trigger signal for ZVA stops tsmapl before pulse modulator „ON“ time stopsı Ensures data sampling during ON-time of the pulseı Takes several ponts during one pulseı Speeds up measurement in this example by factor 4


Tests of the TX Path

Typical measurements tasks� Low input power (..-20 dBm) for small signal� High input power (5..10 dBm) for saturated power� High output power e.g. 43 dBm� Measurements under pulsed conditions

� Measurement in pulsed mode versus frequency, power and time� Transmission (mag / phase) & reflection

� Different phase and gain settings, linear and saturated output power � Pout versus Pin� Intermodulation test with 2-tone signal


18.5

19.0

19.5

20.0

20.5

21.0

21.5

22.0

22.5

22.0

1 (Max)

Pb -20 dBm Ch1 fb 1.7 GHz Stop 801

Trc1Trc2Trc3Trc4

S21b2(P1s)a1(P1s)S21


0.5 dB /0.5 dB /0.5 dB /1° /

Ref 22 dB Ref -0.5 dBm Ref -22.6 dBm Ref -154.56°

M1 401.0 -155.33 °

•Trac Stat:Min:Max:Pk-Pk:Trac Stat:Min:Max:Pk-Pk:

Trc1 S21 21.7643 22.2955 0.5311Trc4 S21

-156.8836 -153.3393

3.5443

dB dB dB ° ° °

S21

M1

Test of TX Path small Signal –

special Challenges

ı Forward S21 and S11 measurement in pulsed modeı High accuracy specs (especially for 8 bit resolution)

� S21 < 1°, < 0,1 dB

ı Pin for small signal test typically -20 dBm or even less

ı Problem: High trace noise of S21 mag & phaseı Trace noise more critical than absolute accuracyı Relative accuracy is necessary to compare the

phase and magnitude states; ı Trace noise typically is the bottleneck


Trace Noise without Optimazation

ı Low power level on reference receiver, -20 dBm and lower for small signal measurement

ı Meas. bandwidth 100 kHz or higher for point in pulse measurement (depends on pulse width)

ı Trace noise due tolow power at reference receiver


18.5

19.0

19.5

20.0

20.5

21.0

21.5

22.0

22.5

22.0

1 (Max)

Pb -20 dBm Ch1 fb 1.7 GHz Stop 801

Trc1Trc2Trc3Trc4

S21b2(P1s)a1(P1s)S21


0.5 dB /0.5 dB /0.5 dB /1° /

Ref 22 dB Ref -0.5 dBm Ref -22.6 dBm Ref -154.56°

M1 401.0 -155.33 °

•Trac Stat:Min:Max:Pk-Pk:Trac Stat:Min:Max:Pk-Pk:

Trc1 S21 21.7643 22.2955 0.5311Trc4 S21

-156.8836 -153.3393

3.5443

dB dB dB ° ° °

S21

M1

a1 wave atreference receiver

b2 wave at reference receiver

1°

Solution for low Trace Noise for

S21 Measurementı Improve of sensitivity of

reference receiver

ı Optimize power level at the reference receivers

� Add attenuation in the source path e.g. byswitchable attenuator and by using theloss of the modulator with increased source power


Setup for small Signal TX Measurement


Setup for small Signal TX Measurement

- optimized


Optimized Trace Noise

reference receiver „low noise“


reference receiver „low noise“ + optimized power level

1°

1°

Solution with OSP-TRM


OSP-TRM

Phase Measurement

ı Uncertainty ± 0,5°ı Total error (trace noise + systematic error)


1°

TX path - saturated Power Measurement

ı Trace noise uncritical compared to small signal

� Output power increased -> increase of step attenuation in b2 receiver � Input power increased ->

� Removal of attenuation in reference path� Use of reference arm of ZVAX coupler� Reference power sufficient for good S/N

ı Relative accuracy e.g. for 8-bit phase shifter better 1°


Power Protection for 43 dBm

ı ZVAX-TRM as well as OSP-TRM have high power couplersı Receiver and source protection e.g. by isolators or attenuators required

ı 43 dBm = 20 Wattsı Duty cycle 10 %ı Average power

� 23 dBm or 0,2 Watt

ı 5 W attenuators (37 dBm) are sufficient


TX path - saturated Power Measurement




OSP-TRM

Pulse Profile Measurement

ı Use of averages for better S/N because of wide measurement bandwidth (>10 MHz)


TX Harmonics




OSP-TRM

TX Spur Emission

ı Harmonic measurement at specific frequenciesı Spur search over wide frequency range 10 GHz..20 GHzı Typical settings

� Source in CW mode� Receiver measures 2nd and 3rd harmonic and spurs� Typically also pulsed with wide IF bandwidth


TX - Spur Emission

ı SA functionlity of ZVA with software preselector� Search range e.g. 7 GHz…15 GHz� IFBW 200 kHz� 80 dBc dynamic range� Meas time 9 sec


RX Path Small Signal Gain

ı Test under un-pulsed conditionsı Switching of statesı Reflection, gain (mag&phase)

ı Small signal input power -30 dBm and belowı High accuracy specs

� S12 < 0,5°, < 0,05 dBı Full two port calibration necessary

ı Problem:ı Low input power, high gainı Low reference signalı Low power in reverse direction due to high isolation.


-20.562-20.462-20.362-20.262-20.162-20.062-19.962-19.862-19.762

-20.162

1

Pb -40 dBm Ch1 fb 2 GHz Stop 801

Trc2Trc9Trc10

a2(P2s)a1(P1s)S21

dB MagdB MagdB Mag

0.1 dB /0.1 dB /1 dB /

Ref -39.8 dBm Ref -20.162 dBm Ref -39.788 dB

PCal Offs PCai OffsCa? PCao Offs

Trac Stat:Min:Max:Pk-Pk:

Trc10 S21 -48.9453 -37.7720 11.1733

dB dB dB

•M1M1M1

101.0101.0101.0

-39.211-40.380-40.220

dBm dBm

dB

a1(P1s)

M1

M1

M1

32.6

33.1

33.6

34.1

34.6

35.1

35.6

36.1

36.6

35.1

3


Trc1Trc8

S12S12

dB MagPhase

0.05 dB /0.5° /

Ref 26.438 dB Ref 35.1°

Ca? PCao OffsCa? PCao Offs

Trac Stat:Min:Max:Pk-Pk:Trac Stat:Min:Max:Pk-Pk:

Trc1 S12 26.2709 26.4124 0.1415Trc8 S12

34.7779 35.7525 0.9746

dB dB dB ° ° °

M1M1

101.0101.0

26.334 35.085

dB °

S12

M1

M1

RX Path Small Signal Gain

Solutionı Improvement of sensitivity by setting AGC amplifiers for “a” waves to low noise mode

� B wave receiver for forward direction has to remain in auto modeı Increase of source power in the reference channel ı Use of internal coupler of ZVAı Increase of power level for reverse measurement by 20 dB or more.


RX small Signal Gain with and without Optimization

ı Identical forward and reverse power


ı 20 dB higher reverse power

-20.562-20.462-20.362-20.262-20.162-20.062-19.962-19.862-19.762

-20.162

1


Trc2Trc9Trc10

a2(P2s)a1(P1s)S21

dB MagdB MagdB Mag

0.1 dB /0.1 dB /1 dB /


PCal Offs PCai OffsCa? PCao Offs


Trc10 S21 -48.9453 -37.7720 11.1733

dB dB dB

•M1M1M1

101.0101.0101.0

-39.211-40.380-40.220

dBm dBm

dB

a1(P1s)

M1

M1

M1

32.6

33.1

33.6

34.1

34.6

35.1

35.6

36.1

36.6

35.1

3


Trc1Trc8

S12S12

dB MagPhase

0.05 dB /0.5° /

Ref 26.438 dB Ref 35.1°

Ca? PCao OffsCa? PCao Offs


Trc1 S12 26.2709 26.4124 0.1415Trc8 S12

34.7779 35.7525 0.9746

dB dB dB ° ° °

M1M1

101.0101.0

26.334 35.085

dB °

S12

M1

M1

-20.562-20.462-20.362-20.262-20.162-20.062-19.962-19.862-19.762

-20.162

1


Trc2Trc9Trc10

a2(P2s)a1(P1s)S21

dB MagdB MagdB Mag

0.1 dB /0.1 dB /1 dB /


PCal Offs PCai OffsCa? Pca? Offs


Trc10 S21 -41.9984 -40.8544 1.1441

dB dB dB

•M1M1M1

101.0101.0101.0

-39.226-20.002-41.349

dBm dBm

dB

a1(P1s)

M1

M1

M1

32.633.133.634.134.635.135.636.136.6

35.1

3


Trc1Trc8

S12S12

dB MagPhase

0.05 dB /0.5° /

Ref 26.438 dB Ref 35.1°

Ca? Pca? OffsCa? Pca? Offs


Trc1 S12 26.2686 26.3642 0.0956Trc8 S12

34.7887 35.3851 0.5964

dB dB dB ° ° °

M1M1

101.0101.0

26.309 34.981

dB °

S12

M1

M1

RX Path - small Signal Gain


Port 2

Port 1

ZVAX-TRM

Rx

-10 dBm

- 40 dBm

10 dB

20 dB

20 dB

Src 4

In

Ref 4

In

Src 4

Out

Ref 4

Out

Src 3

In

Ref 3

In

Src 3

Out

Ref 3

Out

Meas 2

In

Ref 1 In

Src 1Out

Ref 2 In

-20 dBm

Meas 1 In

Ref 1 InRef 1 In

ZVAX-TRM setup


Use ofinternal ZVA coupler

attenuator toboost outputpower



OSP-TRM

RX Path – Noise Figure




OSP-TRM

End


ı For solutions PC with ZVA + ZVAX-TRM or ZVA + OSP-TRM

ı All main tests for TRMs of active devices covered:

Test Suite TRM-LIB – Functionality


Test caseDirection

SW-Options:Tx Rx

S-parameter over DUT states with Excel report x x TS6-K20

TS6-PK20

Compression point x x

TS6-K22Pulse profile (rise time, fall time, power droop) xSpurious emissions x xNoise figure xOut of band rejection x x

TS6-K25

Intermodulation (4 port ZVA) x xPower added efficiency (with power supplies HMP4040 or TDK Lambda Genesys)

x

Harmonics x x

or

R&S Test Sequencer for individual Test Plans


Test Sequencer Test Report Generation

� Customer specific test sequences including

� Control of TRM module

� Implementation of required scope of tests

� Time optimization of test routines

� Test adaptations by customer or R&S

� Program code for test sequences delivered with the system

Real life test time: RX S-Parameter Measurement:DUT: RFcore core chip module

TrmTxSParameter: Parameters

StartFrequency: 9000 MHz

StopFrequency: 10000 MHz

Points: 51

96 gain-phase-combinations

Power: -30 dBm

Bandwidth: 5 kHz

Measurement time: 12 seconds

Resust files:

Pass / fail analysis in report

Statistical analysis

Fast analysis by Excel graphics and measurement data

(Gain vs Freq./ Phase vs. Freq. / Gain vs Phase / Phase vs Gain)


Real life test time: TX S-Parameter Measurement DUT: RFcore core chip module

TrmTxSParameter: Parameters

StartFrequency: 9000 MHz

StopFrequency: 9500 MHz

Points: 51

48 phase states / 32 attenuation states

all combinations

Power: -17 dBm

Bandwidth: 200 kHz

Resust files:

Pass / fail analysis in report

Statistical analysis

Fast analysis by 4 Excel files with data and graphics

(Gain vs Freq./ Phase vs. Freq. / Gain vs Phase / Phase vs Gain)

Freqency = 9500

Att Phase Gain

0 0 14,68

1 14,77

2 14,48

3 14,9

4 14,54

5 14,73

6 14,75

7 14,4


R&S cTSVP: Fast programming of the Module

� DUT control:

� High Speed Digital Module up to 40 MHz pattern rate and programmable level for DUT control

� Large on board memory to save all DUT commands in advance.

� PXI LVDS digital waveform generator / analyzer Very fast setup of gain / phase, e.g. < 300us

� Real time evaluation of DUT response messages.

� Trigger of R&S ZVA24 for real time test.

� DMM


t/r module test...rx enable / tx enable pc with trm control sw rf measurement data trigger...

Documents