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參數(shù)資料
| 型號： | ACPM-7813-TR1 |
| 英文描述： | CDMA/AMPS Power Amplifier Module |
| 中文描述： | 碼分多址/ AMPS二元功率放大器模塊 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 183K |
| 代理商： | ACPM-7813-TR1 |
16
ACPR Test Results using Spectrum Analyzer
The meaning of 16 dB
The accurate ACPR measurement
using Spectrum Analyzer needs
to consider the normalization
factor that is dependent on the
Resolution Bandwidth, RBW,
settings. The above figure (mea-
surement shown at 836 MHz for
general example) shows a com-
parison of the different ACPR
measurement results as a func-
tion of various RBW values. As
the RBW is reduced, less power is
captured during the measure-
ment and consequently the
channel power is recorded as a
Figure 21. Example ACPR measurement using Spectrum Analyzer.
smaller value. For example, if the
main channel power is measured
as 28 dBm in a 1.23 MHz band-
width, its power spectral density
is 28 dBm/1.23 MHz, which can
be normalized to 11.87 dBm/
30 kHz. The equation used to
calculate the normalization factor
of power spectral density is:
Normalization Factor =
10log[Normalization BW/Current BW
(Spectrum Analyzer RBW)]
= 10log[1.23X10
6
/30X10
3
]
= 16.13 dB
Since the ACPR in an IS95
system is specified in a 1.23 MHz
bandwidth, a channel power that
is measured using a different
RBW, can be normalized to
reflect the channel power as if it
was measured in a 1.23 MHz
bandwidth. The difference in
channel power measured in
30 kHz bandwidth and the
channel power measured in a
1.23 MHz bandwidth is 16 dB.
REF 42.8 dBm
AT 30 dB
RBW = 1.0 MHz
RBW = 30 kHz
RBW = 300 kHz
Mkr 836 MHz
35.42 dBm
Center 836 MHz
VBW 100 kHz
Span 5.000 MHz
SWP 2.00 sec
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ACPM-7821 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7821-BLK | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7821-TR1 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7822 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
| ACPM-7822-BLK | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
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