Specifications

7
Far-field antenna measurements
The N5264A PNA-X measurement receiver based system uses 85320A/B broadband
external mixers and a 85309B distributed frequency converter and provides the best
measurement solution (shown in Figure 4). With Option 108, the internal microwave
synthesizedsourcecanbeusedastheLOsourceforthe85309BLO/IFDistribution
Unit.
Alternatively,PNA/PNA-XOption020orLegacy(E836xC)PNAwithOptionH11,IF
access can achieve high sensitivity required for far-field antenna measurements. Higher
sensitivity can be achieved since the IF signal bypasses the first down conversion stage
in the PNA/PNA-X, and is routed directly to the input of the second down conversion
stage in the rear panel.
Router/Hub
Source antenna
Optional
amplifier
Trigger in/out
LAN
LAN
PSG Synthesized source
7.606 MHz
Trigger in/out
85320B
Reference
mixer
85320A
Test mixer
85309B
LO in
PSG or MXG
LO out
(Opt. 108)
10 MHz
10 MHz
AUT
Positioner
Power
Supply
Positioner controller
Note
With Option H11, the first IF of the PNA is
at 8.33 MHz, so when using H11 inputs, the
usershouldoffsetexternalmixerLOinputs
by 8.33 MHz.
Figure 3. Typical far-field antenna measurement configuration using a PNA-X network analyzer.
Figure 4. Typical configuration for a compact antenna range using using a PNA-X measurement receiver.
Router/Hub
Source antenna
Optional
amplifier
Trigger in/out
LAN
LAN
PSG Synthesized source
7.606 MHz
Trigger in/out
85320B
Reference
mixer
85320A
Test mixer
85309B
LO in
PSG or MXG
LO out
(Opt. 108)
10 MHz
10 MHz
AUT
Positioner
Power
Supply
Positioner controller