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
3 3 3 5 6 7 7 9 9 11 11 12 13 13 13 16 16 18 22 25 27 27 29 29 31 31 33 35 36 38 39 40 41 42 45 46 46 48 49 51 53 53 A 55 B 56 C LO IF 57 D 60 60 61
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8711C RF LO 10 db 10 db 8757D LO 4
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
CH1 CONV MEAS log MAG 10 db/ REF 10 db RF out RF in START 640.000 000 MHz STOP 660.000 000 MHz 10 db 10 db LO 6
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
IF ( LO) RF ( IF) RF IF RF IF LO LO 0 0 IF RF LO DUT 8
DUT RF IF ρ ρ source receiver LO (ρ ρ ) source DUTinput (ρ ρ ) receiver DUToutput (ρ ρ ) source receiver 9
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) 35 30 25 20 15 10 0 5 10 15 20 25 30 35 (db) 32dB 26dB 21dB 18dB 10
(db) 35 30 25 20 15 10 5 0 0 5 10 15 20 25 30 35 (db) 20dB 10dB 6dB 3dB 11
db -1-2 -3-4 -5-6 -7-8 -9 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 900.000 MHz IF Ch1:Mkr1 1000.000 MHz -6.38 db Ch2:Mkr1 1000.000 MHz -4.84 db IF Stop 1 000.000 MHz 2 1 2 1 12
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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 (410 300) = 1 MHz IF 1 MHz 18 VTO (6LO 2RF) 981 980 = 1 MHz LO 42 VTO (9LO RF) 2289 2290 = 1 MHz DUT-FTD IF RF LO 6LO 2RF 9LO RF 110 980 2290 1 MHz 1 MHz 1 MHz LO 2VTO 18VTO 42VTO 109 981 2289 14
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
R LO 16
RF 0.03-3000MHz RF out RF LO DUT LO IF A / B R 1 MHz BPF 1 MHz BPF IF F LO PLL 15 60 MHz DAC 1 MHz 17
1. IF GPIB 10 db B 18
19
2. IF 3. RF 20
GPIB DUT LO A B 10 db 6 db GPIB A B 10 db 21
GPIB RF in RF out DUT 10 db LO A B 8757D 22
(a) 8757D m1 B (b ) 8757D m 2 DUT m 3 B LO 23
(a) (b) Detector m 1 m 2 (c) (d) Detector RF DUT IF m 3 m 4 LO m 5 24
IF GPIB GPIB LO 10 MHz 6 db 10 db IF RF LO DUT 3 db LO 25
Agilent 26
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
CH1 S21/M log MAG.02 db/ REF 0 db PC Cor Ofs CH1 START 250.000 000 MHz CH2 S21/M phase 200 m / REF 0 PC Cor STOP 400.000 000 MHz Hld Ofs CH2 START 250.000 000 MHz STOP 400.000 000 MHz RAB LO RF LO IF DUT 1 LPF RF DUT 2 28
(t g = ) dφ dφ = 1 360 * dφ d f f o (ω) φ φ ω t o ω ω 29
1.2 1.2 2% 1 1 Delay (ns) 0.8 0.6 0.4 Delay (ns) 0.8 0.6 0.4 0.2 0.2 0 Frequency 0 Frequency 1.2 10% 1.2 20% 1 1 Delay (ns) 0.8 0.6 0.4 Delay (ns) 0.8 0.6 0.4 0.2 0.2 0 Frequency 0 Frequency 30
AM 31
Gd= θe (360*f mod) RF DUT f mod LO 32
DUT DUT 8711C X- DUT Y- ns 35 30 25 20 15 10 5 Abs 1:Memory Delay 5 ns/ Ref 0 s Center 175.000 MHz Span 100.000 MHz 2:AM Delay /M 55.6 khz 5 ns/ Ref 0 s ns 2 35 Ch2: Mkr1 25.370 MHz 30-16.45 ns 25 20 1 15 10 5 Abs Center 175.000 MHz Span 100.000 MHz 1 Ch1: Mkr1 25.480 MHz -16.31 ns M1 33
1.9 1.8 1.7 1.6 1.5 1.4 1.3 1:Reflection &MSWR 0.1 / Ref 1.00 C RF Port SWR IF 50 1.2 1.1 Abs 50 Ch1 Start 900.000 MHz Stop 1 000.000 MHz 1 M1 34
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 1 2 3 V LO V IF RF V RF(3) V RF(1) V = 0 LO(2) V LO 35
db Ch1 2 4 6 8 10 12 14 16 1:Transmission/M Log Mag 2.0 db/ Ref 0.00 db RF Feedthrough 18 Abs Start 900.000 MHz Stop 1 000.000 MHz 1 IF LO 36
ATTEN 10 db CNT 26.00dBm RL 0dBm 10dB/ 5.14983 GHz MKR 5.149850 GHz 26.00 dbm CENTER 5.150075GHZ SPAN 5.000 MHz RBW 30kHz VBW 30 khz SWP50.0ms DUT LO 37
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RF IF IF RF LO IF LO 39
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
1 2 A RF IF F IF RF B LO LO 41
LO Agilent 42
A F B X 1 2 A F B 43
1 2 A F B LO 44
NEW OLD E = TF E TF x 1 S22 AIF x S11F x 1 S 11 BIF x S22F Agilent 45
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
1 1 2 DUT LO 2 47
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
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
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NEW E TF ETF = S21 A MXR 51
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
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
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
A 55
B 56
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 ASSIGN @Ana TO 708! 8753E Vector Network Analyzer Address is 708 50 ASSIGN @Lo TO 719! ESG-D3000A Signal Generator Address is 719 60 OUTPUT @Ana;"Pres"! Instrument Preset 70 OUTPUT @Lo;"*RST"! Instrument Preset using the SCPI command 80 OUTPUT @Ana;"FORM4"! 8753E 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 150 170 INPUT "Is the RF>LO (1) or RF<LO (2)? (1/2)",Rflo 180 IF Rflo<1 AND Rflo>2 THEN GOTO 170 190 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 OUTPUT @Ana;"POIN";Pts! 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$="02" 360 OUTPUT @Ana;"PWRR PMAN"! Set Test Port Power Range Setting to Manual 370 Power_range$="POWR"&Range$ 380 OUTPUT @Ana;Power_range$! Set Test Port Power Range 390 OUTPUT @Ana;"POWE ";Rf_power! Set Test Port Power Value 57
400 OUTPUT @Lo;"POW ";Lo_power! Set LO Power on the ESG-D3000 410! *** Set the 8753E to measure absolute power at the R channel for the Fixed IF 420 OUTPUT @Ana;"MEASR"! Measure and Display the R channel for absolute power measurements 430 OUTPUT @Ana;"CWFREQ ";If_freq;"MHZ"! Set the 8753E to CW at the fixed IF Freq. 440 OUTPUT @Ana;"LOFREQ 0HZ"! Temporarily set the 8753E for an LO of 0 HZ 450 OUTPUT @Ana;"FREQOFFS ON"! Set the 8753E to Freq Offset Mode 460 OUTPUT @Ana;"VIEM ON"! Show the measured data (CW Freq) on the 8753E 470! *** Perform a Receiver Calibration on the 8753E at the Fixed IF Frequency *** 480 INPUT "Disconnect the R-CHANNEL jumper from the front panel, Press ENTER",A$ 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 OUTPUT @Ana;"REIC";Rf_power! Set the 8753E Power Level Reference for Rcvr Cal 520 OUTPUT @Ana;"TAKRS"! 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 OUTPUT @Ana;"LOFREQ ";Lo_start_freq;"MHZ"! Set LO Freq setting on the 8753E 560 OUTPUT @Lo;"FREQ:CW ";Lo_start_freq;"MHZ"! Set the LO Freq on the ESG-D3000A 570 OUTPUT @Ana;"LOPOWER ";Lo_power! Set LO Power setting on the 8753E(reference only) 580 OUTPUT @Lo;"OUTP:STAT ON"! Turn ON the LO Power on the ESG-D3000A 590 OUTPUT @Ana;"DCONV"! Set the 8753E to measure a downconverter 600 IF Rflo=1 THEN 610 OUTPUT @Ana;"RFGTLO"! Set the 8753E RF>LO 620 ELSE 630 OUTPUT @Ana;"RFLTLO"! Set the 8753E RF>LO 640 END IF 650 OUTPUT @Ana;"MARK1 0"! Turn Marker ON for reading data, can be placed anywhere for CW meas 660 OUTPUT @Ana;"VIEM 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 OUTPUT @Ana;"VIEM 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 OUTPUT @Ana;"LOFREQ ";Lo_freq;"MHZ"! Set LO Freq setting on the 8753E 740 OUTPUT @Lo;"FREQ:CW ";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 OUTPUT @Ana;"OUTPMARK"! Command to output marker value 770 ENTER @Ana;Mark1,Mark2,Stim1! 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
DUT-FTD: Avantek TFX-180751 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) 2400-8.5 2420-6.9 2440-7.6 2460-8.5 2480-7.3 2500-7.2 2520-8.5 2540-7.1 2560-7.5 2580-8.6 2600-6.9 59
D 60
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5966-3318J 0000-00L/H