Armchair engineer & communications policy wonk.
Joined August 2009
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"[FOLLOW UP] iPhone 18 Pro Max Antenna Gain: Not an Apples to Apples Comparison." Could the Apple C2 modem international model actually have been designed and intended for T-Mobile? wiwavelength.com/2026/10/fol…
"iPhone 18 Pro Max Antenna Gain: Not an Apples to Apples Comparison." Antenna gain disparity, Apple C2 modem international model higher antenna gain than that of Qualcomm X80 modem US model. wiwavelength.com/2026/09/iph…
#iPhoneSE2020 Completed my analysis of iPhone SE 2020 FCC OET RF lab results. LAT conducted power not that interesting at 24-25 dBm or 28 dBm HPUE with UAT always 2-8 dB lower. Conducted power plus antenna gain adds up to mostly average EIRP. See also: xitter.cf/WiWavelength/status/12…
iPhone SE 2020 (US variant: FCC ID BCG-E3500A; model A2275) FCC OET lab tested LTE uplink transmit max antenna gain. LAT 1 (i.e. lower antenna) is primary with highest EIRP, regardless of antenna gain. EIRP and conducted power graph(s) to come later. #iphonese2020
Interesting comparison: iPhone SE 2020 vs iPhone 8. Apple recycling not only same handset body but also same fundamental upper/lower cellular antenna design. Antenna gain structure unmistakably similar. Expect raw RF performance also to be similar. #iPhoneSE2020
iPhone SE 2020 (US variant: FCC ID BCG-E3500A; model A2275) FCC OET lab tested LTE uplink transmit max antenna gain. LAT 1 (i.e. lower antenna) is primary with highest EIRP, regardless of antenna gain. EIRP and conducted power graph(s) to come later. #iphonese2020
Anyone interested in seeing some graphical analysis of FCC OET lab testing of iPhone SE (2020)? Both antenna gain and EIRP?
Pixel 4 XL, Pixel 3a XL, Pixel 3 XL -- the last year's worth of Pixel XLs -- compared by FCC OET RF lab tested LTE uplink antenna gain. (Pixel 3a XL has two antennas per band, but lab tests do not specify gain separately.) On paper, Pixel 4 XL is the winner. #madebygoogle
#GooglePixel4 G020J LTE multi antenna gain and EIRP. Pixel 4 or Pixel 4 XL? Higher gain and EIRP compared to that of G020I variant, but one fewer documented LTE transmit antenna. See also G020I: xitter.cf/WiWavelength/status/11…
Google Pixel 4 G020I LTE multi antenna gain and EIRP. Lower gain and EIRP compared to that of G020J variant, but an added fourth documented LTE antenna. Some uncertainty as to which variant is smaller Pixel 4, which is larger XL. #GooglePixel4
Google Pixel 4 G020I LTE multi antenna gain and EIRP. Lower gain and EIRP compared to that of G020J variant, but an added fourth documented LTE antenna. Some uncertainty as to which variant is smaller Pixel 4, which is larger XL. #GooglePixel4
iPhone 11 A2111 FCC OET authorizations arrived late to party but did make an appearance yesterday. As with iPhone XR last year, antenna design gets dialed back to 2x2 MIMO. Uplink antenna gain compared to that of iPhone XR not quite as high at peak but more consistent.
iPhone 11 Pro Max multi antenna LTE peak EIRP. iPhone 4x4 MIMO still downlink only, can select and uplink transmit on only one of 2-4 antennas at a time. Varied antenna gain and conducted power cause varied EIRP per band per antenna. An RF performance graph to rule them all.
iPhone 11 Pro LTE uplink transmit antenna gain via FCC OET lab tested authorization filings. Marginally stronger low band, minimally weaker mid band vs iPhone 11 Pro Max antenna gain: xitter.cf/WiWavelength/status/11…
iPhone 11 Pro Max vs Google Pixel 4 XL. FCC lab tested RF comparison. LTE uplink transmit maximum antenna gain. #iPhone11ProMax #GooglePixel4
iPhone 11 Pro Max FCC OET auth filings posted. Last year, iPhone XS Max 4x4 MIMO design struggled with poor antenna gain. Uplink transmit antenna performance has made some strides this year. Still negative gain across all bands, but definite measured improvements for mid band.
Antenna design is the most important (and most overlooked) factor in cellphone RF performance. The presumed Pixel 4 XL incorporates one mid band and two broadband uplink transmit antennas with ample positive antenna gain, even across much of the low band.
Now that VZW officially launching Moto 5G MOD, see again mod's lab tested LTE RF performance.
Moto 5G MOD comes at a cost measured in mW. VZW Moto Z3 LTE RF power output by itself and with 5G MOD attached. wiwavelength.com/2019/02/mot…
Moto 5G MOD comes at a cost measured in mW. VZW Moto Z3 LTE RF power output by itself and with 5G MOD attached. wiwavelength.com/2019/02/mot…
OnePlus 6T shows its pluses, minuses in FCC OET RF authorization filing. WiWavelength blog analysis: wiwavelength.com/2018/11/one…
Pixel 3 XL still mid band LTE strong. Now that 2018 Pixels are up for pre-order, see my updated RF lab test analysis post. No FCC OET Class II change filing, but some clerical errors in authorization filings fixed and main antenna gain graphs added. wiwavelength.com/2018/09/pix…
An immediate reaction blog post on iPhone XR FCC OET authorization filing and RF lab figures. Check back later for further analysis. wiwavelength.com/2018/09/iph…
