參數(shù)資料
型號(hào): PMB2402
廠商: SIEMENS AG
英文描述: GSM Receiver Circuit
中文描述: 手機(jī)接收電路
文件頁(yè)數(shù): 17/21頁(yè)
文件大?。?/td> 697K
代理商: PMB2402
Semiconductor Group
17
PMB 2402
Test Circuit 3
f
W
= wanted input signal from received channel
f
int
= unwanted interfering signal within band :
f
int
=
f
LO
f
IF
/ 2
f
LO
= local oscillator signal
f
IFW
= wanted IF signal from received channel =
f
LO
f
W
f
IFi t
= unwanted IF / 2 signal from interfering channel:
f
IFint
=
f
LO
f
int
f
IF2in
= unwanted harmonic signal of
f
IF2in
:
f
IF2in
= 2
×
f
IFint
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