Máy phát vector Advantex AVM4 100MHz-4GHz

Máy phát vector Advantex AVM4 100MHz-4GHz

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Model

Bảo hành

Advantex

AVM4

12 tháng

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(08) 3977 8269 – (08) 3601 6797

Email: sales@lidinco.com – lidinco@gmail.com

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Máy phát vector hãng Advantex 

Các thông tin chính và thông số kỹ thuật máy phát vector hãng Advantex AVM4 tần số hoạt động từ 100MHz-4GHz

Distinctive Features of AVM4 Vector Modulator

  • High output power
  • Wide I/Q bandwidth
  • Precise output level control
  • Output filtering
  • Adjustment of LO suppression
  • Small size
  • Low cost

Brief Description

Advantex AVM4 100 MHz – 4 GHz Quadrature Modulator is is designed to generate a modulated signal at the carrier frequency. It can be applied in testing and debugging of digital communication receivers, as well as for digital modulators which form complex I/Q-signal for later transfer to the carrier frequency.

Figure 1 shows the block diagram of quadrature modulator, the main block of the instrument. Signal from the LO input is fed to the phase-shifter, one output of which is shifted by +45° and multiplied by the signal from the I input, the other shifted by −45°, – multiplied from the Q input. Then these signals are added and fed to the filter block, which suppress the LO products, i.e. 2fLO, 3fLO, etc. The resulting signal is fed to the APC (Automatic Power Control) block, then – to the RF Out output.

The instrument has USB and RS-232 interfaces for SCPI remote control and firmware updating capability.

Key Features of AVM4 RF Vector Modulator

  • Output frequency range: 100 MHz – 4 GHz
  • I/Q bandwidth: DC – 500 MHz
  • I/Q input level (typ.): 0.8 Vpp @ 50Ω
  • I/Q sideband suppression (calibrated): −40..−60 dB
  • Output P1dB: +20 dBm
  • Output level range: −30..+20 dBm
  • Absolute level accuracy (typ.): ±0.2 dB
  • Output level resolution: 0.05 dB
  • Output IP3: +27 dBm
  • Noise floor: −120 dBm/Hz @ POUT=0 dBm
  • Input LO level: −10..+10 dBm
  • LO suppression (calibrated): −60 dBm
  • Remote control: RS-232, USB
  • Command set: SCPI
  • Dimensions: H x W x D: 2U x 42HP(½ 19”) x 315 mm

Applications of Advantex AVM4 I/Q-Modulator

Figure 2 shows an example of instrument application. Signal generator with required carrier frequency is connected to the LO input. Base-band generator outputs or two channels of AWG (Arbitrary Waveform) generator are fed to I and Q inputs. Signal from RF Out is fed to the receiver under test.

Test & Measurement Automation

External control interfaces (RS-232, USB) combined withSCPI protocol allow to use low-cost RF signal generator in ATE applications in volume production as well as in education laboratories where equipment is usually combined to one complex controlled by PC.

 

 

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Parameters of RF Out signal
Parameter Conditions min. typ. max. Unit
Frequency bandwidth −3 dB cutoff 40   4400 MHz
Level range   −30   +20 dBm
Level resolution     0.05   dB
Absolute level accuracy −10≤POUT≤+10 dBm   ±0.1 ±0.3 dB
within calibration area   ±0.2 ±0.5
Temperature effect     0.01   dB/°C
Calibration area high bound +13   +18 dBm
low bound −20   −15
Output P1dB 2 GHz +18 +20   dBm
Output IP3 100 MHz to 4 GHz   +27   dBm
VSWR (RF Out @ 50Ω load)     1.9    
Level settling time     100   ms
RF Out ON/OFF switching time from edge of triggering signal   0.1   ms
Noise floor 100 MHz   −117   dBm/Hz
1 GHz   −124  
4 GHz   −128  
2-nd harmonics & LO products @ POUT=0 dBm 100 MHz   −31   dB
1 GHz   −44  
4 GHz   −44  
3-rd harmonics & LO products @ POUT=0 dBm 100 MHz   −43   dB
1 GHz   −66  
4 GHz   −85  
Acceptable DC voltage at RF Out   0   8 V
RF Out level @ OFF state   −40   −60 dBm

 

 

Actual signal level vs. frequency at various levels set to the instrument
Actual signal level vs. frequency at various levels set to the instrument
Absolute level accuracy
Absolute level accuracy

LO Input Specifications of Advantex AVM4 I/Q-Modulator

LO input parameters
Parameter Conditions min. typ. max. Unit
Frequency range   100   4000 MHz
VSWR (LO input @ 50Ω) 500 MHz to 4 GHz   1.5    
100 MHz to 500 MHz     3
LO input level   −10   +10 dBm
LO to RF Out suppression uncalibrated (@ PLO=0 dBm) −60 −40 −25 dB
calibrated     −60

 

Phase noise
LO suppression and RF Out level at OFF state

I/Q Input Specifications of Advantex AVM4 Vector Modulator

I/Q parameters
Parameter Conditions min. typ. max. Unit
Frequency bandwidth may be reduced by output filter DC   500 MHz
VSWR (I/Q inputs @ 50Ω) @ 100 MHz   1.1    
Flatness DC to 100 MHz, FLO>500 MHz   1.5   dBpp
full I/Q BW     6
Sideband suppression uncalibrated (@ PLO=0 dBm) −60 −40 −20 dB
calibrated   −60  
I/Q inputs two-tone IMD3 @ VIQ=0.8 Vpp fIQ=200 MHz   −40   dB
I/Q input level @ 50Ω load   0.8 1.6 Vpp
I/Q gain imbalance     0.02   dB

 

Sideband suppression at various LO levels
Sideband suppression @ PLO = −10 .. + 12 dBm
Sideband suppression (contour graph)
Sideband suppression @ PLO = −10 .. + 12 dBm (contour graph)