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his research aims at creating broadband tunable, fully integrated filters for the application of
cognitive radio and signal classification receivers. The approach under study is the N-path filter
technique which is capable of translating a baseband impedance to a reference frequency creating
a tunable filter. The traditional N-path filter suffers from fundamental architectural limitations,
namely : a trade-off between insertion loss and out-of-band rejection, reference clock feed-
through, and jammer power handling limitations. In the first approach, the fundamental trade-
off of the traditional N-path filter between insertion loss and out-of-band rejection is improved by
a transmission line (T-line) N-path filter technique.
標(biāo)簽：
Filtering
N-path
上傳時間：
2020-05-31
上傳用戶：shancjb
-
This book focuses on the study and development of one of the most
advanced topics in broadband wireless communications systems:
power efficiency and power consumption in wireless communications
systems, especially of mobile devices. Hence, the main focus of this
book is on the most recent techniques for the conservation of power
and increase in power efficiency.
標(biāo)簽：
Communications
Efficiency
Broadband
Power
in
上傳時間：
2020-05-31
上傳用戶：shancjb
-
With the rapid development of electric vehicles (EVs) as well as the promotion and
application of vehicle-to-grid (V2G) technologies, EVs charging loads, as flexible
loads, have the potential to participate in the grid services, including peak shaving
and valley filling, frequency regulation (FR), emergency power, energy market
participation, and so on. Therefore, great attention has been paid to EVs and V2G.
Focusing on the interactions between EVs and power system, this book aims to
bring readers with basic knowledge of electrical engineering promptly to the
frontier of the EVs’ influence on power system and environment. This book may
serve as a reference for scientists, electrical engineers, and postgraduate students
majoring in electrical engineering or other related fields.
標(biāo)簽：
Electric
Vehicles
System
Power
on
上傳時間：
2020-06-07
上傳用戶：shancjb
-
A revolution in power industries, including generation, transmission and distribution, driven by
environmental and economic considerations, is taking place all over the world. The smart grid allows for
integration of diverse generation and storage options, reduced losses, improved efficiencies, increased
grid flexibility, reduced power outages, allowing for competitive electricity pricing and integration of
electric vehicles and overall becoming more responsive to market, consumer and societal needs. It is
bringing profound changes to both power systems and many related industries.
標(biāo)簽：
Measurement
Innovative
Solutions
Testing
and
上傳時間：
2020-06-07
上傳用戶：shancjb
-
With the proliferation of cloud computing and Internet online services, more and
more data and computation are migrated to geographical distributed Internet data
centers (IDCs), which can provide reliability, management, and cost benefits.
However, IDC operators encounter several major problems in IDC operations, such
as huge energy consumption and energy cost, and high carbon emission. To deal
with the above problems, IDC operators have to efficiently manage the way of
energy consumption and energy supply. Considering the potential of smart grid, we
focus on the energy management of IDCs in smart grid from several perspectives,
i.e., power outage, carbon emission, heterogeneous service delay guarantees, and
operation risk.
標(biāo)簽：
Internet
Centers
Data
上傳時間：
2020-06-07
上傳用戶：shancjb
-
It has been over a decade since the Chinese publication of Line Loss in Electric Power Systems. To keep pace
with technological developments, I started a revision as early as 2002, following the main principles that the
theoretical framework and characteristics of the first edition should be retained, with new contents added
according to new problems after the reform of electric power systems and the new requirements for line loss
management practices and in combination with practical experience.
標(biāo)簽：
Analysis
Line
Loss
上傳時間：
2020-06-07
上傳用戶：shancjb
-
高通(Qualcomm)藍(lán)牙芯片QCC5151_硬件設(shè)計詳細(xì)指導(dǎo)書（官方內(nèi)部培訓(xùn)手冊）共52頁其內(nèi)容是針對硬件設(shè)計、部分重要元器件選擇(ESD，F(xiàn)ilter）及走線注意事項的詳細(xì)說明。2 Power management 2.1 SMPS 2.1.1 Components specification 2.1.2 Input power supply selection 2.1.3 Minimize SMPS EMI emissions 2.1.4 Internal LDOs and digital core decoupling 2.1.5 Powering external components 2.2 Charger 2.2.1 Charger connections.2.2.2 General charger operation2.2.3 Temperature measurement during charging 2.3 SYS_CTRL 3 Bluetooth radio3.1 RF PSU component choice 3.2 RF band-pass filter3.3 Layout (天線 走線的注意事項)4 Audio4.1 Audio bypass capacitors 4.2 Earphone speaker output4.3 Line/Mic input 4.4 Headphone output optimizition5 LED pads 5.1 LED driver 5.2 Digital/Button input 5.3 Analog input5.4 Disabled 6 Reset pin (Reset#)7 QSPIinterface 8 USB interfaces 8.1 USB device port8.1.1 USB connections8.1.2 Layout notes8.1.3 USB charger detection
標(biāo)簽：
qualcomm
藍(lán)牙芯片
qcc5151
上傳時間：
2022-01-24
上傳用戶：XuVshu
-
高通(Qualcomm)藍(lán)牙芯片QCC5144_硬件設(shè)計詳細(xì)指導(dǎo)書（官方內(nèi)部培訓(xùn)手冊）其內(nèi)容是針對硬件設(shè)計、部分重要元器件選擇(ESD，F(xiàn)ilter）及走線注意事項的詳細(xì)說明。2 Power management 2.1 SMPS 2.1.1 Components specification 2.1.2 Input power supply selection 92.1.3 Minimize SMPS EMI emissions 2.1.4 Internal LDOs and digital core decoupling 2.1.5 Powering external components 2.2 Charger 2.2.1 Charger connections.2.2.2 General charger operation2.2.3 Temperature measurement during charging 2.3 SYS_CTRL 3 Bluetooth radio3.1 RF PSU component choice 3.2 RF band-pass filter3.3 Layout (天線 走線的注意事項)4 Audio4.1 Audio bypass capacitors 4.2 Earphone speaker output4.3 Line/Mic input 4.4 Headphone output optimizition5 LED pads 5.1 LED driver 5.2 Digital/Button input 5.3 Analog input5.4 Disabled 6 Reset pin (Reset#)7 USB interfaces7.1 USB device port7.1.1 USB device port7.1.2 Layout notes 7.1.3 USB charger detectionA QCC5144 VFBGA example schematic and BOM B Recommended SMPS components specificationB.1 Inductor specifition B.2 Recommended inductors B.3 SMPS capacitor specifition
標(biāo)簽：
藍(lán)牙芯片
qcc5144
上傳時間：
2022-04-07
上傳用戶：默默
-
The GL823K integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer performance between USB and flash card interfaces. Its pin assignment design fits to card sockets to provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL is needed and that effectively reduces the total BOM cost.
標(biāo)簽：
GL823K
SCH
上傳時間：
2022-04-27
上傳用戶：qdxqdxqdxqdx
-
Abstract: This application note describes how to design boost converters using the MAX17597 peakcurrent-mode controller. Boost converters can be operated in discontinuous conduction mode (DCM) orcontinuous conduction mode (CCM). This operating mode can affect the component choices, stress levelin power devices, and controller design. Formulas for calculating component values and ratingsare alsopresented.
標(biāo)簽：
17597
MAX
如何設(shè)計
升壓轉(zhuǎn)換器
上傳時間：
2013-11-16
上傳用戶：zcs023047
