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參數(shù)資料
| 型號： | RF2484 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | DIRECT QUADRATURE MODULATOR |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC16 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, PLASTIC, QFN-16 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大小： | 156K |
| 代理商： | RF2484 |
Preliminary
5-34
RF2484
Rev A2 010829
5
M
U
CDMA/W-CDMA Test S etup
General
The above setup was used to evaluate the RF2484
under CDMA and W-CDMA modulation conditions.
Due to test equipment limitations, a DC-level shifting
board was required to provide the appropriate DC ref-
erence voltage (4.1V) for the I and Q pins. I and Q
were driven single-endedly; differential drive may
improve performance.
A PC-controlled
Schwarz AMIQ generated the CDMA I and Q signals.
In order to reduce AMIQ noise contributions to adja-
cent channel power, W-CDMA baseband signals were
filtered using a high order low pass filter before appli-
cation to the RF2484.
Rohde &
E V M, Phase Error, and Rho
To measure EVM, phase error, and Rho, signals were
generated using the AMIQ and decoded with the Agi-
lent VSA. For CDMA Cellular and PCS, I and Q input
signals were generated with the Pilot Channel active,
32x oversampling and base station equifilters. For W-
CDMA, the Common Pilot Channel was active with 8x
oversampling and a root cosine filter. In all cases, rela-
tive signal amplitude levels were adjusted to optimize
signal quality.
CDMA Modulation S etup (Cellular and PCS )
To measure ACPR, I and Q input signals were gener-
ated using the following settings:
Pilot Channel active
Sync Channel active
Paging Channel active
6 Traffic Channels active
32x Oversampling
Base Station equifilter
W-CDMA Modulation S etup
To measure W-CDMA ACPR, I and Q input signals
were generated using the following settings in the
AMIQ:
P-CPICH (Common Pilot Channel) active
P-SCH (Sync Channel) active
P-CCPCH (Primary Common Control Physical
Channel) active
P-ICH (Page Indicator Channel) Active
DL-DPCCH (Dedicated Physical Control Channel)
active
6 DPCH (Dedicated Physical Channels) active
8x Oversampling
Rohde & Schwarz
AMIQ 1110.2003.02
RF2484 DC Level Shift
Control Board
RF2484
Evaluation Board
Rohde & Schwarz
FSIQ 1119.6001.26
Hewlett-Packard
8665B
I SIG
RF OUT
LO IN
I REF
Q SIG
Q REF
Agilent 66332A
VCC
VPD
Hewlett-Packard
6624A
Agilent 89441
Vector Signal Analyzer
相關PDF資料 |
PDF描述 |
|---|---|
| RF2485 | VHF QUADRATURE MODULATOR |
| RF2486 | PCS LOW NOISE AMPLIFIER/MIXER |
| RF2488 | MULTI-MODE DUAL-BAND LNA MIXER |
| RF2489 | DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER |
| RF2492 | DUAL-BAND LOW NOISE AMPLIFIER/MIXER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RF2484_06 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:DIRECT QUADRATURE MODULATOR |
| RF2484_1 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:DIRECT QUADRATURE MODULATOR |
| RF2484PCBA-410 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:DIRECT QUADRATURE MODULATOR |
| RF2484PCK | 制造商:RF Micro Devices Inc 功能描述:KIT EVAL FOR RF2484 |
| RF2484TR7 | 制造商:RF Micro Devices Inc 功能描述:IC QUADRATURE MOD DUAL-BND 16QFN |
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