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1 RF LO-RF LO LO+RF RF LO IF IF IF LO-RF LO RF LO+RF RF LO IF IF IF LO-RF LO RF LO+RF RF LO IF IF IF LO-RF LO RF LO+RF RF LO IF IF IF

2 A 55 B 56 C LO IF 57 D

3 3

4 8711C RF LO 10 db 10 db 8757D LO 4

5 FREQ OFFS ON off LO MENU 10 db RF in 10 db DOWN CONVERTER UP CONVERTER RF > LO 900MHz 100MHz 650MHz 350MHz IF: 1GHz LO +13dBm RF < LO VIEW MEASURE RETURN 5

6 CH1 CONV MEAS log MAG 10 db/ REF 10 db RF out RF in START MHz STOP MHz 10 db 10 db LO 6

7 DUT RF IF IF RF 6 db LO 6 db 6 db LO 6 db 6 db LO RF LO IF = 20 log [ mag(f IF ) ] mag(f RF) 7

8 IF ( LO) RF ( IF) RF IF RF IF LO LO 0 0 IF RF LO DUT 8

9 DUT RF IF ρ ρ source receiver LO (ρ ρ ) source DUTinput (ρ ρ ) receiver DUToutput (ρ ρ ) source receiver 9

10 ρ source ρ E ff source match (ρ attenuator ) (ρ source )( attenuation) 2 ρ = (ρ ) + (ρ 2 E source match attenuator source)( attenuation) ff (db) (db) 32dB 26dB 21dB 18dB 10

11 (db) (db) 20dB 10dB 6dB 3dB 11

12 db Abs 1:Conv Loss /M Log Mag 1.0 db/ Ref 0.00 db 2:Conv Loss /M Log Mag 1.0 db/ Ref 0.00 db Swept Conversion Loss Start MHz IF Ch1:Mkr MHz db Ch2:Mkr MHz db IF Stop MHz

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14 DUT-FTD RF = 410 MHz IF = RF LO = 110 MHz LO = 300 MHz VTO = (RF LO) 1 2 = 54.5 MHz 2 VTO (RF LO) = 109 ( ) = 1 MHz IF 1 MHz 18 VTO (6LO 2RF) = 1 MHz LO 42 VTO (9LO RF) = 1 MHz DUT-FTD IF RF LO 6LO 2RF 9LO RF MHz 1 MHz 1 MHz LO 2VTO 18VTO 42VTO

15 Agilent DUT-FTD IF 1 MHz BPF IF LO DUT-FTD RF DUT-FTD LO RF DUT-FTD IF RF LO LO RF + LO 8753E VTO 8753E IF 1 MHz 15

16 R LO 16

17 RF MHz RF out RF LO DUT LO IF A / B R 1 MHz BPF 1 MHz BPF IF F LO PLL MHz DAC 1 MHz 17

18 1. IF GPIB 10 db B 18

19 19

20 2. IF 3. RF 20

21 GPIB DUT LO A B 10 db 6 db GPIB A B 10 db 21

22 GPIB RF in RF out DUT 10 db LO A B 8757D 22

23 (a) 8757D m1 B (b ) 8757D m 2 DUT m 3 B LO 23

24 (a) (b) Detector m 1 m 2 (c) (d) Detector RF DUT IF m 3 m 4 LO m 5 24

25 IF GPIB GPIB LO 10 MHz 6 db 10 db IF RF LO DUT 3 db LO 25

26 Agilent 26

27 RF in 1 DUT# 2 DUT#2 DATA/MEMORY 10 db 10 db RF RF IF IF LO DUT 1 10 db LO LO 10 db DUT 2 27

28 CH1 S21/M log MAG.02 db/ REF 0 db PC Cor Ofs CH1 START MHz CH2 S21/M phase 200 m / REF 0 PC Cor STOP MHz Hld Ofs CH2 START MHz STOP MHz RAB LO RF LO IF DUT 1 LPF RF DUT 2 28

29 (t g = ) dφ dφ = * dφ d f f o (ω) φ φ ω t o ω ω 29

30 % 1 1 Delay (ns) Delay (ns) Frequency 0 Frequency % % 1 1 Delay (ns) Delay (ns) Frequency 0 Frequency 30

31 AM 31

32 Gd= θe (360*f mod) RF DUT f mod LO 32

33 DUT DUT 8711C X- DUT Y- ns Abs 1:Memory Delay 5 ns/ Ref 0 s Center MHz Span MHz 2:AM Delay /M 55.6 khz 5 ns/ Ref 0 s ns 2 35 Ch2: Mkr MHz ns Abs Center MHz Span MHz 1 Ch1: Mkr MHz ns M1 33

34 :Reflection &MSWR 0.1 / Ref 1.00 C RF Port SWR IF Abs 50 Ch1 Start MHz Stop MHz 1 M1 34

35 LO-to-IF V LO(3) V LO(2) V = 0 RF(1) V RF LO-to-RF V LO(1) V LO(2) V = 0 IF(3) V RF V LO V LO V IF RF V RF(3) V RF(1) V = 0 LO(2) V LO 35

36 db Ch :Transmission/M Log Mag 2.0 db/ Ref 0.00 db RF Feedthrough 18 Abs Start MHz Stop MHz 1 IF LO 36

37 ATTEN 10 db CNT 26.00dBm RL 0dBm 10dB/ GHz MKR GHz dbm CENTER GHZ SPAN MHz RBW 30kHz VBW 30 khz SWP50.0ms DUT LO 37

38 - 38

39 RF IF IF RF LO IF LO 39

40 A RF IF = A RF A A IF LO S11ARF A LO S22AIF S21 A GD A IF IF IF = F S11 F S21S22 F F GD F 40

41 1 2 A RF IF F IF RF B LO LO 41

42 LO Agilent 42

43 A F B X 1 2 A F B 43

44 1 2 A F B LO 44

45 NEW OLD E = TF E TF x 1 S22 AIF x S11F x 1 S 11 BIF x S22F Agilent 45

46 GD A = GD X GD Y + GD Z 2 GD F GD B = GD X + GD Y GD Z 2 GD F GD C = GD X + GD Y + GD Z 2 GD F S 21 S 21 X S21 Z = A S 21 F S21 Y S 21 S 21 X S21 Y = B S 21 F S21 Z S 21 S 21 Y S21 Z = C S 21 F S21 X 46

47 1 1 2 DUT LO 2 47

48 S 21 M MXR 1 = x S 21 A MXR x 1 x E TF 1 S11 A MXR x E SF 1 S22 A MXR x E LF 48

49 S21 M MXR = x x S21 A MXR E TF 1 S11 A MXR x E SF 1 S22 A MXR x E LF S 21 M DUT 1 = x S 21 A DUT x 1 x E TF 1 S11 A DUT x E SF 1 S22 A DUT x E LF 21 M DUT A S A A S21 = 1 S11 x E 1 S22 x E DUT DUT SF x DUT LF E TF 49

50 50

51 NEW E TF ETF = S21 A MXR 51

52 Agilent NEW E TF = ETF S21 A MXR 1 S11 A MXR x E SF NEW E DF, E SF, E RF, E TF E LF = 0 52

53 NEW E TF = ETF S21 A MXR x 1 S11 A MXR x E SF x 1 S22 A MXR x S11 A CH 53

54 NEW E DF, E SF, E RF, E TF E LF = 0 NEW 21 DUT = A S S 21 A DUT x 1 S22 DUT x S11 A CH 54

55 A 55

56 B 56

57 C LO IF GPIB RF in Bandpass filter 10 db 10 db 3 db LO LO IF 1! *** Fixed IF Downconverter Measurements using the HP8753E Network Analyzer and ESG- D3000A Signal Generator ****10! RE-SAVE "FIXED_IF" 20 PRINTER IS CRT 30 DIM Marker(51)! Create an array to hold the conversion loss values 40 TO 708! 8753E Vector Network Analyzer Address is TO 719! ESG-D3000A Signal Generator Address is Instrument Preset 70 Instrument Preset using the SCPI command E Data Transfer Format, ASCII with no header 90! 100! Enter Frequencies and Power Levels for Mixer under Test 110! 120 INPUT "Enter the Fixed IF Frequency (MHz)",If_freq 130 INPUT "Enter the LO Start Frequency (MHZ)",Lo_start_freq 140 INPUT "Enter the LO Stop Frequency (MHZ)",Lo_stop_freq 150 INPUT "Enter the Number of Frequency Point to Measure(3,11,21,26,51)",Pts! Can be increased 160 IF Pts<>3 AND Pts<>11 AND Pts<>21 AND Pts<>26 AND Pts<>51 THEN GOTO INPUT "Is the RF>LO (1) or RF<LO (2)? (1/2)",Rflo 180 IF Rflo<1 AND Rflo>2 THEN GOTO Lo_increment=(Lo_stop_freq-Lo_start_freq)/(Pts-1) 200 INPUT "Enter the RF Power to the Mixer Under Test (dbm) (RF>-30 and RF<0)",Rf_power 210 IF Rf_power<-30 OR Rf_power>0 THEN GOTO 200! maintain adequate level for R-Channel 220 INPUT "Enter the LO Power to the Mixer Under Test (dbm)",lo_power 230! 240 PRINT "FIXED IF DOWNCONVERTER MEASUREMENTS" 250 PRINT "IF Frequency = ";If_freq;" MHz" 260 PRINT "LO Frequency = ";Lo_start_freq;" MHz to ";Lo_stop_freq;" MHz" 270 PRINT "LO Frequency Spacing = ";Lo_increment;" MHz" 280 PRINT "RF Port Power = ";Rf_power;" dbm" 290 PRINT "LO Port Power = ";Lo_power;" dbm" 300 PRINT 310 Set the Number of Points on the 8753E 320! *** Set the 8753E RF Attenuator for the proper range *** 330 IF Rf_power<=0 AND Rf_power>=-15 THEN Range$="00" 340 IF Rf_power<-15 AND Rf_power>=-25 THEN Range$="01" 350 IF Rf_power<-25 THEN Range$="02" 360 PMAN"! Set Test Port Power Range Setting to Manual 370 Power_range$="POWR"&Range$ 380 Set Test Port Power Range 390 ";Rf_power! Set Test Port Power Value 57

58 400 ";Lo_power! Set LO Power on the ESG-D ! *** Set the 8753E to measure absolute power at the R channel for the Fixed IF 420 Measure and Display the R channel for absolute power measurements 430 ";If_freq;"MHZ"! Set the 8753E to CW at the fixed IF Freq HZ"! Temporarily set the 8753E for an LO of 0 HZ 450 ON"! Set the 8753E to Freq Offset Mode 460 ON"! Show the measured data (CW Freq) on the 8753E 470! *** Perform a Receiver Calibration on the 8753E at the Fixed IF Frequency *** 480 INPUT "Disconnect the R-CHANNEL jumper from the front panel, Press ENTER",A$ 490 INPUT "Connect any IF Components (filter, pad) placed after the mixer to the R-CHANNEL IN, Press ENTER",A$ 500 INPUT "Connect a cable from the TEST PORT 1 to the IF components on the R-CHANNEL IN, Press ENTER",A$ 510 Set the 8753E Power Level Reference for Rcvr Cal 520 Calibrate the 8753E's Receiver for absolute power 530! *** Connect the Mixer to the 8753E and set initial Freq Offset conditions 540 INPUT "Insert the Mixer into the setup and Connect the LO, Press ENTER",A$ 550 ";Lo_start_freq;"MHZ"! Set LO Freq setting on the 8753E 560 ";Lo_start_freq;"MHZ"! Set the LO Freq on the ESG-D3000A 570 ";Lo_power! Set LO Power setting on the 8753E(reference only) 580 ON"! Turn ON the LO Power on the ESG-D3000A 590 Set the 8753E to measure a downconverter 600 IF Rflo=1 THEN 610 Set the 8753E RF>LO 620 ELSE 630 Set the 8753E RF>LO 640 END IF 650 0"! Turn Marker ON for reading data, can be placed anywhere for CW meas 660 OFF"! Turn on Freq Offset Block Diagram for Connection Verification 670 INPUT "Examine the 8753E/ESG Screens and Verify the Connections, Frequencies & Power for the Measurement",A$ 680 ON"! Turn on the measurement display 690 PRINT 700 PRINT "LO Freq (MHz) LOSS (db)" 710 FOR I=1 TO Pts 720 Lo_freq=Lo_start_freq+(I-1)*Lo_increment 730 ";Lo_freq;"MHZ"! Set LO Freq setting on the 8753E 740 ";Lo_freq;"MHZ"! Set LO Freq on the ESG-D3000A 750 WAIT 2! Wait to allow 8753E to phase lock, this setting should be optimized 760 Command to output marker value 770 Enter the marker value 780 Marker(Pts)=Mark1-Rf_power! Calculation for conversion loss (db): Meas-Input levels(dbm) 790 PRINT USING 800;Lo_freq,Marker(Pts) 800 IMAGE 1X,4D.DD,10X,4D.D 810 NEXT I 820 PRINT 830 PRINT "Measurement Complete" 840 END 58

59 DUT-FTD: Avantek TFX FIXED IF DOWNCONVERTER MEASUREMENTS IF Frequency = 170 MHz LO Frequency = 2400 MHz to 2600 MHz LO Frequency Spacing = 20 MHz RF Port Power = -20 dbm LO Port Power = 10 dbm LO Freq (MHz) LOSS (db)

60 D 60

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64 J L/H

JAJP.indd

JAJP.indd Agilent Application Note 1....1 2. MIMO...2 2.1...2 2.2 MIMO...3 3. Agilent MIMO...4 3.1 P...4 3.2 U2000 USB...7 4....10 4.1 P...11 4.2 U2000...16 2 T 0 T 1 = 1.15 0.26 0.39 1.03 R 0 R 1 CB.log 2 1 C MIMO