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參數(shù)資料
型號(hào): W3020
英文描述: GSM Multiband RF Transceiver
中文描述: 手機(jī)多頻段射頻收發(fā)器
文件頁數(shù): 11/44頁
文件大小: 409K
代理商: W3020
Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
Lucent Technologies Inc.
11
RF Mixer
The W3020 contains two mixers: one for GSM900 band operation and one for GSM1800/1900 band operation.
The RF mixers are double-balanced mixers that can be used in various modes of operation. The ac-grounded
input (pin 56) requires grounding at both the RF and the IF frequencies. If grounding is not placed close to the
device, the RF performance will be compromised. At the output, the mixer is connected to a balanced IF SAW
filter.
Table 4. RF Performance: GSM900
V
DD =
2.7 V; T
A
= 25 °C ± 3 °C. F
IN
= 942 MHz
Parameter
Min
925
1195
–10
Typ
270
9
7
–5
Max
960
1230
12
Unit
MHz
MHz
MHz
dB
dB
dBm
RF Input Band
Output IF Frequency
LO Frequency Range
Noise Figure (SSB)
Mixer Power Gain*
/P 1 dB Compression
*LO1 level = –6 dBm, F
LO
= 1212 MHz, F
IF
= 270 MHz.
Table 5. RF Performance: GSM1800/1900
V
DD
=
2.7 V; T
A
= 25 °C ± 3 °C. F
IN
= 1842 MHz
Parameter
Min
1805
1930
1535
1660
4
–12
Typ
Max
1880
1990
1610
1720
12
Unit
RF Input Band:
GSM1800
GSM1900
Output IF Frequency
LO Frequency Range:
GSM1800
GSM1900
Noise Figure (SSB)
Mixer Power Gain*
/P 1 dB Compression
270
MHz
MHz
MHz
MHz
MHz
dB
dB
dBm
9.5
6
–7
*LO1 level = –6 dBm, F
LO
= 1572 MHz, F
IF
= 270 MHz
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