l*****e
发帖数: 16384 | 1 【 以下文字转载自 Joke 讨论区 】
发信人: pppttt (who), 信区: Joke
标 题: Re: 谈谈手机辐射 (转载)
发信站: BBS 未名空间站 (Sun Aug 12 13:06:47 2012, 美东)
辐射值SAR 这个东西，FCC对每款手机都有备案，
http://en.wikipedia.org/wiki/Specific_absorption_rate
自己查一下就知道了 | h********m
发帖数: 6049 | 2 galgaxy nexus这么低，原来传闻都是真的啊。
风闻日本版的galaxy nexus信号不好，因为日本对辐射的要求严。
现在看是全球的nexus信号都不好，丫的三星为了降低天线功率，牺牲通话质量了，因
为人对通话质量的耐受度高。一切换到数据，nexus就漏出电炉子的真面目了，为了保
证速率，拼命提高发射功率，所以发热特快。由此推出，galgaxy nexus发热大的问题
是硬件问题，不可能通过软件升级来解决。
又黑了一遍三星，三轮们快点来跳坑吧，我是whyabk的马甲。
【在 l*****e 的大作中提到】
: 【 以下文字转载自 Joke 讨论区 】
: 发信人: pppttt (who), 信区: Joke
: 标 题: Re: 谈谈手机辐射 (转载)
: 发信站: BBS 未名空间站 (Sun Aug 12 13:06:47 2012, 美东)
: 辐射值SAR 这个东西，FCC对每款手机都有备案，
: http://en.wikipedia.org/wiki/Specific_absorption_rate
: 自己查一下就知道了
| l**n
发帖数: 7272 | 3 iPhone 4S standby time 200 hrs, battery 3.7V 1420 mAh, SAR 1.11
Samsung Galaxy S2 620 hrs, 1650 mAh, SAR 0.338
If ignoring battery difference and assuming the same standby condition
resulted primarily from RF power consumption, S2 radio is 3x more efficient
than that of 4S. If battery discharge is linear, the power output of S2 can
be ~ 1/3 of that of 4S.
- Note that during standby, a phone must receive and transmit in order to
maintain its status with base stations.
In the SAR equation, \sigma and \rho are independent of phones. Only |E(r)|
^2 matters. If E(r)^2 of both phones are linear with respect of each other
everywhere, we will see S2's |E(r)|^2 is approximately 1/3.28 of 4S's |E(r)|
^2.
- In SAR tests, a phone is assumed to be in transmission for a certain
amount of time (6 minutes?).
It is interesting that how these two sets of numbers can match and how
Samsung did this. |
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