- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385812 > SA1630 (NXP Semiconductors N.V.) IF Quadrature Transceiver(IF正交收發(fā)器) PDF資料下載
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)： | 31/36頁 |
| 文件大?。?/td> | 477K |
| 代理商： | SA1630 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當(dāng)前第31頁第32頁第33頁第34頁第35頁第36頁
Philips Semiconductors
Application note
AN2003
SA1630 IF transceiver demonstration board
1999 Jan 05
31
Carrier suppression
Substituting Equations (118) and (130) into Equation (102) gives:
CS
20log
GX(0) G
e2
1
2
GM (1
(G
e
)
2
G
e
)
2
2G
e
(G
e
)
2
1
(132)
Reducing and rearranging terms yields:
CS
20log2M
((G
e
)
2
((G
e
)
2
(G
e2
(G
e2
1)
1)
(2G
e
))
(2G
e
))
(133)
Equation (133) shows us a couple of things. First, carrier suppression is a strong function of the DC offset to ac amplitude of the baseband input
signal. Secondly, notice that the numerator and denominator of the portion of the equation under the radical are almost identical. They differ by
only a factor of
Θ
in the last term. So, we expect that carrier suppression should be a weak function of quadrature phase noise error and
virtually completely insensitive to amplitude mismatch errors.
To verify the strong sensitivity of carrier suppression to the DC offset of the baseband input signal, let’s assume some arbitrary values for
amplitude mismatch and quadrature phase error and graph this relationship. The graph in Figure 24 shows that approximately 6.5 mV of
baseband input DC offset can be tolerated while still meeting the SA1630’s –30 dBc carrier suppression specification. Thus, this result which
takes into account amplitude mismatch and quadrature phases errors, is somewhat less than that predicted in Equation (110), where these
effects were neglected.
To evaluate the relative sensitivity of carrier suppression to amplitude mismatch and quadrature phase error, let’s set the baseband DC offset to
an arbitrary value of 3 mV and graph this relationship. The graph in Figure 25 shows the carrier suppression varies less than only 0.4 dB while
quadrature phase error is varied by as much as 5 degrees and remains nearly constant with changes in amplitude mismatch error.
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CARRIER SUPPRESSION (dBc)
–30
–45
–50
BASEBAND INPUT SIGNAL DC OFFSET (mV)
C
CARRIER SUPPRESSION (dBc) vs. BASEBAND INPUT SIGNAL DC OFFSET ERROR
(AMPLITUDE MISMATCH ERROR = 0.2dB, QUADRATURE PHASE ERROR = 1deg)
SR01883
–40
–35
–25
–20
3
CARRIER SUPPRESSION
–30dBc SPECIFICATION
Figure 24. Carrier suppression as a function of baseband input signal DC offset
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA1638 | Low voltage IF I/Q transceiver |
| SA2531B | VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER |
| SA2531A | VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER |
| SA2531C | VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER |
| SA2531D | VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA163000 | 功能描述:CONN SOCKET IC 16-PIN T/H RoHS:是 類別:連接器，互連式 >> 用于 IC 的插座，晶體管 系列:- RoHS指令信息:1437504-8 Statement of Compliance 標(biāo)準(zhǔn)包裝:400 系列:8060 類型:晶體管，TO-5 位置或引腳數(shù)目（柵極）:3（圓形） 間距:- 安裝類型:面板安裝 特點:封閉框架 觸點表面涂層:金 觸點涂層厚度:- 其它名稱:8060-1G17 |
| SA163040 | 功能描述:CONN SOCKET IC 16-PIN T/H RoHS:是 類別:連接器，互連式 >> 用于 IC 的插座，晶體管 系列:- 產(chǎn)品目錄繪圖:A-CCS Series Through Hole 52-Position 標(biāo)準(zhǔn)包裝:23 系列:- 類型:芯片載體，PLCC 位置或引腳數(shù)目（柵極）:52（4 x 13） 間距:0.050"（1.27mm） 安裝類型:通孔 特點:封閉框架 觸點表面涂層:錫 觸點涂層厚度:150µin（3.81µm） 產(chǎn)品目錄頁面:545 (CN2011-ZH PDF) 其它名稱:AE10058 |
| SA1630BE | 制造商:NXP Semiconductors 功能描述: |
| SA1638 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage IF I/Q transceiver |
| SA1638BE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage IF I/Q transceiver |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。