Agilent Technologies MXG (Series A and B) Manual de usuario descargar pdf (Pagina 4)

4

Take Your Devices to the Limit

Pure and precise MXG

On the path to better performance,

the pure and precise MXG X-Series

signal generators are fine-tuned

to be your “golden transmitter” in

R&D. Whether you’re pushing for a

linear RF chain or an optimized link

budget, the analog and vector MXG

models deliver the performance and

capabilities you need: phase noise,

ACPR, channel coding, and more.

Use the MXG to test radar receiver

sensitivity, characterize ADC or

mixer SNR, or find receiver out-of-

band rejection capability. You’ll get

excellent results with industry-leading

phase noise of –146 dBm at 1 GHz

and spurious performance of -96 dBc

at 1 GHz. You can also drive power

amplifiers and characterize nonlinear

behavior with industry-leading output

power of +27 dB and ACPR of –73

dBc (W-CDMA test mode 1, 64

DPCH).

With EVM up to 0.4 percent (802.11ac

and LTE) and factory-equalized 160

MHz RF bandwidth with flatness

of less than ± 0.2 dB, the MXG

enables testing and characterization

of multicarrier power amplifiers or

wideband receivers and components,

such as those used in 802.11ac

WLAN designs.

Industry-leading

phase noise

The MXG implements a new

triple-loop phased-lock loop

(PLL) design and “frequency

plan” that results in substan-

tial phase noise improvements

close to the carrier and at

wide offsets. The frequency

plan addresses several key

attributes: the choice of oscil-

lator and reference frequen-

cies in the synthesizer and the

associated frequency conver-

sion (mixers and multipliers)

and filtering.

The triple-loop approach

allows optimized frequency

spacing that ensures effective

filtering of nonlinear artifacts

such as images by pushing

them outside the bandwidth

of the synthesizer circuits. In

the MXG, the plan arranges

the frequency references and

conversions such that the larg-

est nonlinearities are far from

the desired frequencies and

modest filtering can heavily

attenuate the remaining spuri-

ous signals.

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