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參數(shù)資料
| 型號(hào)： | CV110-3A_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： | CV110-3A_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
CV110-3A
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
CV110-3A
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
CV110-3A
: 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 by emailing to
applications.engineering@wj.com.
RF Bandpass Filtering:
Bandpass filtering is recommended to
reject the image frequencies and 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. 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. 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
Frequency (MHz)
L7 (nH)
C17 (pF)
R8 (ohms)
L4 (nH)
180
82
4.7
2.2
330
210
82
3.3
2.2
220
240
56
3.9
2.2
220
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 |
|---|---|
| CV110-3A | Cellular-band High Linearity Downconverter |
| CV110-3AF | Cellular-band High Linearity Downconverter |
| CV110-3APCB240 | Cellular-band High Linearity Downconverter |
| CV111-1A_07 | PCS/DCS-band High Linearity Downconverter |
| CV111-1A | PCS/DCS-band High Linearity Downconverter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CV110-3AF | 功能描述:上下轉(zhuǎn)換器 800-960MHz RF 200-350MHz 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 |
| CV110-3APCB240 | 功能描述:射頻開發(fā)工具 800-960MHz RF Brd 240MHz IF RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評(píng)估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| CV110-3ATRF | 制造商:TriQuint Semiconductor 功能描述:DOWNCONVERTER |
| CV110JPVG | 制造商:Integrated Device Technology Inc 功能描述:PROGRAMMABLE PLL TRIPLE 56SSOP - Bulk |
| CV110JPVG8 | 制造商:Integrated Device Technology Inc 功能描述:PC CLOCK - GRANTSDALE TSSOP56 GREEN - Tape and Reel |
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