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

Cellular Booster Testing Assessing WCS Service Capabilities 9.23.f1 1

Cellular Signal Booster Testing SiriusXM conducted laboratory tests of vehicular cellular signal boosters 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 2

Cellular Signal Booster Testing Test methodology focused on frequency bands Boosters supported for transmission (uplink) 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 3

Cellular Signal Booster Testing Booster uplink test set-up: Uplink direction S 21 Magnitude measured Cellular Internal antenna or portable device port External antenna port Booster in out Under Test 4

Cellular Signal Booster Testing WeBoost (470510) Uplink Spectral Sweep No WCS or SXM band amplification measured (note markers 5 and 6) 5

Cellular Signal Booster Testing SureCall Fusion 2Go 3.0 Uplink Spectral Sweep No WCS or SXM band amplification measured (Note markers 5 and 6) 6

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 |S 21 | 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 7