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參數(shù)資料
| 型號(hào)： | CV110-1A_07 |
| 英文描述： | Cellular-band High Linearity Downconverter |
| 中文描述： | 蜂窩波段高線性度下變頻 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 293K |
| 代理商： | CV110-1A_07 |
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 4 April 2007
CV110-1A
Cellular-band High Linearity Downconverter
Device Architecture / Application Circuit Information
Typical Downconverter Performance Chain Analysis
Cumulative Performance
Output
P1dB
(dBm)
13.5
21.0
12.0
19.5
3.0
6.1
22.0
20.3
22.0
20.3
Stage
Gain
(dB)
Output
P1dB
(dBm)
Output
IP3
(dBm)
NF
(dB)
Current
(mA)
Gain
(dB)
Output
IP3
(dBm)
40.0
38.5
22.1
37.0
37.0
NF
(dB)
RF Amplifier
RF Filter
MMIC Mixer
IF Amplifier
CV110-1A
13.5
-1.5
-9.0
19.0
21
---
8
22
40.0
---
23.0
39.1
3.5
1.5
9.8
2.5
150
---
60
150
360
3.5
3.5
4.5
5.0
5.0
Cumulative Performance
CV110-1A
: The application circuit can be broken up into four main
functions as denoted in the colored dotted areas above: RF/IF diplexing
(purple), 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
applications.engineering@wj.com.
RF Bandpass Filtering:
Bandpass filtering is recommended to reject
the image frequencies and achieve the best noise figure performance
by
emailing
to
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. Standard WJ evaluation boards will have the 2 dB pad in
place.
External Diplexer:
In a downconversion application, the incoming RF
signal impinges on the switching elements of the mixer; the interaction
with these switches produces a signal at the IF frequency. The two
signals (RF and IF) are directed to the appropriate ports by the external
diplexer. A four-element diplexer is used in the circuit implementation
(L8 and C2 are not used). Pin 5 contains the IF signal and allows the
signal to be transferred to pin 25 for the convenience of PCB layouts.
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.
IF Amplifier Matching
40
50
470
430
24
15
4.7
4.7
470
240
Frequency (MHz)
L7 (nH)
C17 (pF)
R8 (ohms)
L4 (nH)
75
150
22
3.3
330
100
150
10
2.2
330
125
120
8.2
2.2
330
130
120
6.8
2.2
330
G
28
R
27
G
26
I
25
G
24
I
23
G
22
1
2
3
4
5
6
7
21
20
19
18
17
16
15
8
9
10
G
11
M
12
13
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
IF THRU
GND
RF/IF
G
N
G
L
RF/IF
IF Feedthru
Path
LO
Printed Circuit Board Material:
.014” FR-4, 4 layers, .062” total thickness
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)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CV110-1A | Cellular-band High Linearity Downconverter |
| CV110-1AF | Cellular-band High Linearity Downconverter |
| CV110-1APCB75 | Cellular-band High Linearity Downconverter |
| CV110-2A_07 | Cellular-band High Linearity Downconverter |
| CV110-2A | Cellular-band High Linearity Downconverter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CV110-1AF | 功能描述:上下轉(zhuǎn)換器 800-915MHz RF 65-120MHz IF RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| CV110-1APCB75 | 功能描述:射頻開發(fā)工具 800-915MHz 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 |
| CV110-2A | 制造商:WJCI 制造商全稱:WJCI 功能描述:Cellular-band High Linearity Downconverter |
| CV110-2A_07 | 制造商:WJCI 制造商全稱:WJCI 功能描述:Cellular-band High Linearity Downconverter |
| CV110-2AF | 功能描述:上下轉(zhuǎn)換器 800-960MHz RF 200-250MHz IF RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
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