Cellular Booster Testing Assessing WCS Service Capabilities 9.23.f1 - - PowerPoint PPT Presentation

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Cellular Booster Testing

Assessing WCS Service Capabilities

9.23.f1

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SiriusXM conducted laboratory tests of vehicular cellular signal boosters Cellular Signal Booster Testing

SXM evaluated the devices’ transmission capabilities over a very wide frequency range, and assessed measurement techniques used for such evaluations. Tested Boosters: WeBoost 47051 SureCall Fusion 2 Go 3.0

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Test methodology focused on frequency bands Boosters supported for transmission (uplink)

Cellular Signal Booster Testing

SiriusXM conducted wideband frequency response sweeps to characterize uplink transmission capabilities for signals from 100 MHz to 6 GHz

SXM engineers conclude that use of an RF/microwave network analyzer facilitates efficient uplink measurements over a wideband frequency range

Faster and more comprehensive than single-frequency, CW testing, ensuring complete and accurate characterization of both allowed and prohibited bands of operation. Supported by either a scalar or vector network analyzer, or alternatively, a spectrum analyzer with tracking generator

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Booster uplink test set-up:

Cellular Signal Booster Testing

Uplink direction S21 Magnitude measured

Cellular Booster Under Test

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External antenna port Internal antenna or portable device port

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WeBoost (470510) Uplink Spectral Sweep Cellular Signal Booster Testing

No WCS or SXM band amplification measured (note markers 5 and 6)

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SureCall Fusion 2Go 3.0 Uplink Spectral Sweep

Cellular Signal Booster Testing

No WCS or SXM band amplification measured (Note markers 5 and 6)

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Cellular Booster Testing Conclusions

SiriusXM laboratory testing finds that both the WeBoost 470510 and the SureCall Fusion 2Go 3.0 are compliant with the WCS transmission prohibitions, and furthermore, do not support transmissions in the SDARS bands. To ensure 100% characterization of cellular booster service and band compliance, Sirius XM recommends the use of an RF/microwave network analyzer to make a wideband |S21| frequency response sweep from the booster’s internal antenna port (portable device interface) to the external antenna port. Much faster and more comprehensive test than one-frequency-at-a-time CW testing Supported by vector network analyzer, as well as either less expensive scalar network analyzer or spectrum analyzer with tracking generator