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參數(shù)資料
| 型號： | CV111-3APCB240 |
| 英文描述： | UMTS-band High Linearity Downconverter |
| 中文描述： | UMTS的波段高線性度下變頻 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 278K |
| 代理商： | CV111-3APCB240 |
Specifications and information are subject to change without notice
WJ Communications, Inc
Phone 1-800-WJ1-4401
FAX: 408-577-6621
e-mail: sales@wj.com
Web site: www.wj.com
Page 2 of 5 May 2006
CV111-3A
UMTS-band High Linearity Downconverter
Product Information
The Communications Edge
TM
Device Architecture / Application Circuit Information
Typical Downconverter Performance Chain Analysis
Cumulative Performance
Output
P1dB
(dBm)
12
21.0
10
19.0
1.5
6.1
20
20.7
20
20.7
Stage
Gain
(dB)
Output
P1dB
(dBm)
Output
IP3
(dBm)
NF
(dB)
Current
(mA)
Gain
(dB)
Output
IP3
(dBm)
41.0
39.0
22.2
37.9
37.9
NF
(dB)
RF Amplifier
RF Filter
LO Amp / MMIC Mixer
IF Amplifier
CV111-3A
12
-2
-8.5
18.5
21
---
8
23
41
---
23
41
3.5
2.0
9.1
2.1
140
---
80
140
360
3.5
3.6
4.8
5.4
5.4
Cumulative Performance
CV111-3A
: The application circuit can be broken up into four main
functions as denoted in the colored dotted areas above: RF/IF
diplexing (purple; this is only used with the cellular-band CV
products), amplifier matching (green), filtering (red), and dc biasing
(blue). There are various placeholders for chip components in the
circuit schematic so that a common PCB can be used for all WJ
single-branch converters. Additional placeholders for other optional
functions such as filtering are also included.
RF / IF Amplifier Matching:
The RF amplifier requires a shunt
matching element for optimal gain and input return loss performance.
The IF amplifier requires matching elements to optimize the
performance of the amplifier to the desired IF center frequency.
Since IF bandwidths are typically on the order of 5 to 10%, a simple
two element matching network, in the form of either a high-pass or
low-pass filter structure, is sufficient to match the MMIC IF
amplifier over these narrow bandwidths. Proper component values
for other IF center frequencies can be provided by emailing to
applications.engineering@wj.com.
RF Bandpass Filtering:
Bandpass filtering is recommended to
achieve the best noise figure performance with the downconverter.
The bandpass filter, implemented with a SAW filter on the
application circuit, allows for the suppression of noise from the
image frequency. It is permissible to not use a filter and use a 2 dB
pad with R6, R7, and R16 instead with slightly degraded noise
figure performance.
External Diplexer:
This is only used with the cellular-band CV
products. The mixer performs the diplexing internally for the
CV111-3A; therefore the components shown in the diplexer section
should be loaded as follows: C2 = C14 = 0
Ω
.
DC biasing:
DC bias must be provided for the RF, LO and IF
amplifiers in the converter. R1 sets the operating current for the last
stage of the LO amplifier and is chosen to optimize the mixer LO
drive level. Proper RF chokes and bypass capacitors are chosen for
proper amplifier biasing at the intended frequency of operation. The
“+5 V” dc bias should be supplied directly from a voltage regulator.
Printed Circuit Board Material:
.014” FR-4, 4 layers, .062” total thickness
G
28
R
27
G
26
M
25
G
24
I
23
G
22
1
2
3
4
5
6
7
21
20
19
18
17
16
15
8
G
9
10
G
11
M
12
G
13
L
14
G
IF Amp
RF Amp
LO Driver Amp
IF OUT
GND
N/C
GND
BIAS
GND
LO IN
RF OUT
GND
N/C
GND
N/C
GND
MIXRF
N
RF
IF
LO
RF Amp Bias
IF Amp Bias
LO Amp Bias
LO Amp Bias
RF Bandpass Filter /
Attenuator Pad
RF Amp Matching
IF Amp Matching
RF / IF Diplexer
(used for cellular versions only)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CV111-3APCB75 | 功能描述:射頻開發(fā)工具 1900-3200MHz RF Brd 75MHz IF RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| CV111-3ATRF | 制造商:TriQuint Semiconductor 功能描述:DOWNCONVERTER |
| CV111-3PCB75RX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UMTS-band High Linearity Downconverter |
| CV111-3PCB75TX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UMTS-band High Linearity Downconverter |
| CV1-150K-07-B | 制造商:SEI Stackpole Electronics Inc 功能描述:Var MOV 150VAC/200VDC 1200A 240V Radial Bulk |
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