參數(shù)資料
型號: SA1630
廠商: NXP Semiconductors N.V.
英文描述: IF Quadrature Transceiver(IF正交收發(fā)器)
中文描述: 中頻正交收發(fā)器(中頻正交收發(fā)器)
文件頁數(shù): 14/36頁
文件大?。?/td> 477K
代理商: SA1630
Philips Semiconductors
Application note
AN2003
SA1630 IF transceiver demonstration board
1999 Jan 05
14
Tx input bandwidth measurement
The connections necessary for the Tx input bandwidth
measurement is identical to that shown in Figure 11 with one notable
exception. Only the I or the Q channel input signal should be
connected. This creates a double sideband output, but we are only
concerned with the bandwidth, so this is not a concern. The
measurement is made by incrementing the input frequency and
storing the result on the spectrum analyzer using the maxhold
feature. The resulting spectrum is shown in Figure 16, and the
bandwidth measurement is simply made on only one side of the
spectrum. As shown, the Tx input bandwidth is well in excess of the
22 MHz specification.
CENTER 352.0 MHz
RBW 30 kHz
SPAN 200.0 MHz
SWP 560 ms
VBW 30 kHz
ATTEN 10 dB
RL –23.0 dBm
MKR –3.46 dB
55.0 MHz
1 dB/
MKR
55.0 MHz
–3.46 dB
SR01907
Figure 16. Tx input modulation bandwidth
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