rfmicrowave circuit design for wireless applications

... fo For the impedancemeasurement, the maximum peak will occurfor the parallel resonant circuit, andminimum peak for the series resonantcircuit FIGURE 20: VOLTAGE VS FREQUENCY FOR RESONANT CIRCUIT ... The DC resistance for a conductor with a uniform cross-sectional area is found by: where: For a The resistance must be kept small as possible for higher Q of antenna circuit For this reason, a ... FREQUENCY RESPONSES FOR RESONANT CIRCUIT Note 1: (a) S11 Response, (b) Impedance Response for a Parallel Resonant Circuit, and (c) Impedance Response for a Series Resonant Circuit 2: In (a), the

Ngày tải lên: 11/01/2016, 11:33

... Trang 1Circuit Design for Linearizing Transmitter Sim Chan Kuen NATIONAL UNIVERSITY OF SINGAPORE 2003 Trang 2Circuit Design for Linearizing Transmitter Sim Chan ... Test for ROF system(Before Linearization) 85 4.27 Multi-Carrier Test for ROF system(After Linearization) 85 Trang 10List of Tables 4.1 Comparison of two-tone test results performed by different design ... tones for ROF predistortion two-tones test (before linearization) 81 4.23 Overall output spectrum for ROF predistortion two-tones 4.24 Zooming on the frequency spectrum around the two tones for

Ngày tải lên: 03/10/2015, 20:57

... Trang 1RF CIRCUIT DESIGNREINHOLD LUDWIG GENE BOGDANOV Trang 3RF Circuit Design:Theory and Applications Reinhold Ludwig Worcester Polytechnic Institute ... Reinhold.RF circuit design : theory and applications / Reinhold Ludwig, Gene Bogdanov, p cm. Includes bibliographical references and index. ISBN 0-13-147137-6 (hardcover) 1 Radio circuits-D esign ... Reinhold. RF circuit design : theory and applications / Reinhold Ludwig, Gene Bogdanov, p cm. Includes bibliographical references and index. ISBN 0-13-147137-6 (hardcover) 1 Radio circuits-D esign

Ngày tải lên: 22/10/2022, 14:35

... H.264/AVC is designed such that it in-terfaces very well with packet-based networks such as RTP/IP [6] In this work, the robustness and the suitability of the H.264/AVC design for wireless video applications ... IEC, only results for synchronized reference frames for a feedback delay of about 250 ms are shown Other back modes show similar performance for this typical feed-back delay For the slice mode ... throughputηAL for different system designs for RLC-PDU loss rate of 1% (left-hand side) and 10% (right-hand side) For both cases, we assume that the considered user is also the worst-case user for which

Ngày tải lên: 22/06/2014, 23:20

... alphabets withM =2m, for example, for 8-PSK,M =8, andm =3 For the information in the enhancement layer (i.e., the encoder output component sent using the fine modulation of the nonuniform MPSK constellation) ... either uniform QPSK or uniform 8-PSK without channel coding (2) A 2-layer system using nonuniform 8-PSK without channel coding (3) A single-layer system using either uniform QPSK or uniform 8-PSK ... stream with uniform modulation; for the 2-layer system, the code withR(2)c = 1/3 is used for the enhancement layer.7 The results are demonstrated inFigure 10for AWGN chan-nel For lower values

Ngày tải lên: 22/06/2014, 19:20

... pagesdoi:10.1155/2008/457307 Research Article Code Design for Multihop Wireless Relay Networks Fr ´ed ´erique Oggier and Babak Hassibi Department of Electrical Engineering, California Institute of Technology, Pasadena ... hop We address the problem of code design when relay nodes may be used for more than one hop We consider as a protocol a more elaborated version of amplify-and-forward, called distributed space-time ... anten-nas What the relays perform on their received signal de-pends on the chosen protocol, generally categorized between amplify-and-forward (AF) and decode-and-forward (DF). In order to evaluate

Ngày tải lên: 22/06/2014, 19:20

... the worst performing user for scenario 3, BPSK/QPSK mod-ulation and source rate of 100 kbps/200 kbps; (b) performance improvement for the three scenarios in forward mode; (c) performance improvement ... Advanced Video Technologies and Applications for H.264/AVC and Beyond From 2006 to 2007, he serves as an Associate Editor for the IEEE Trans-actions on Circuits and Systems for Video Technology (CSVT) ... especially important in wireless net-works because of the unique challenges of the wireless envi-ronment, like the time-varying and the fading nature of the wireless channels This wireless nature and

Ngày tải lên: 22/06/2014, 22:20

... includes image format transformation and a low-pass filter First, the Bayer pattern CFA data is transformed into a format suitable for image compression as well as for hard-ware design The data is then ... memory is used as two line buffer for image format transformation Trang 8Communication withcontrol unit Control unit of JPEG-LS Synchronization and format transformation Bayer image data & ... its computation com-plexity is so high for wireless endoscopy application This paper presents a new near-lossless image compression algo-rithm for the wireless endoscopy system It has low complex-ity

Ngày tải lên: 22/06/2014, 23:20

... paradigm to the design of a protocol for WSNs where MAC and routing (i.e., cluster formation) as-pects are jointly considered and optimized: the decisions to be taken for cluster formation rely ... Trang 1
2005 Chiara Buratti et al. Cross-Layer Design of an Energy-Efficient Cluster Formation Algorithm with Carrier-Sensing Multiple Access for Wireless Sensor Networks Chiara Buratti IEIIT-BO/CNR, ... generates a random backoff pe-riodTbfor an additional deferral time before transmit-ting its packet (2) Channel busy: the algorithm is different for a non-CH or a non-CH The former stops sensing and moves

Ngày tải lên: 23/06/2014, 00:20

... plotted for the Schott 2000 catalog glasses, after pre-screening for materials with good physical properties The chart is shown in Fig 6 for the C-band, with the final glass types selected for the design ... surface deformations result in significant degradation of performance Figure 9.b shows the coupling efficiency if the lens design is not adjusted to compensate for mount-induced deformations ... performance that is typically more severe than thermal soak effects We performed a sensitivity analysis for fiber coupling efficiency as a function of lateral, axial, and radial gradients for

Ngày tải lên: 06/08/2014, 00:20

... application-specific-integrated-circuits (ASICs) [27–29] In [25], a wireless sensor platform for noninvasive biomedical research isdemonstrated The platform achieves a small form factor, but with a relatively ... 19efficient design, which is a very important aspect to consider when designing aWBAN system.Besides the efforts in hardware design, MAC protocol also plays a very importantrole as it defines how the wireless ... into designs built with commercial-off-the-shelf (COTS) componentsand designs built with proprietary application-specific-integrated-circuits (ASICs).The COTS based designs offer a flexible platform,

Ngày tải lên: 09/09/2015, 08:16

... Analysis and Design of Fully Integrated Class-E PA 41 4.5 Prototype Circuit Design and Measurement Results 48 4.6 Conclusion 54 CHAPTER 5 CIRCUIT DESIGN OF THE TRANSCEIVER 55 5.1 TX Design 55 ... of the VCO, complicating the circuit design Low-IF architecture helps to reduce the circuit complexity and power consumption Therefore it is used in this design for both OOK and BPSK RX To save ... set to 0.5 V 52 Figure 5.1 The transmitter circuitry 55 Figure 5.2 The BPSK MUX Circuitry 56 Figure 5.3 Circuit and performance of the switch (a) Circuit implementation of the switch (b) S11

Ngày tải lên: 09/09/2015, 18:49

... and not yet developedfor real-life applications This thesis analyses the power consumption of wireless sensor nodes in tice for performing different tasks The energy sources for sustaining the ... Management in Real-time Wireless Sensor Networks 61 Trang 93.4.1 Transmission Power Level Configuration for Wireless SensorNodes 61 3.4.2 Intra-cluster Power Management for Wireless Sensor Networks ... 43 3.2 Wireless Sensor Nodes’ Energy Model and Cluster Head Rotation for Balancing Energy 43 3.2.1 Energy Model of the Wireless Sensor Node 43 3.2.2 Cluster Head Rotation for Balancing

Ngày tải lên: 10/09/2015, 09:04

... much higher cost Therefore, there is a need to incorporate the designintent (circuit performance) into the OPC flow to avoid the aforementionedscenario In [14], circuit performance was incorporated ... intoconsideration circuit metrics such as circuit timing This is critical sinceOPC edge insertion procedure may impact circuit performance Atiming-performance-aware OPC approach is developed to reduce theperformance ... algorithm for different processes Simulation resultsshow that the convergence speed is improved, and run-time is reduced by80%, using various industrial standard test circuits.Finally, for large circuits

Ngày tải lên: 10/09/2015, 09:13

... in designing robust receivers.Therefore, we can apply this approach in designing a robust receiver for the fadingchannel, that does not require CSI information or fading statistics For performance ... Similarly, in the performance analysis for flat fading channels, there remainmany unsolved problems We want to obtain the performance in a simple closedform, such that it is easy for system designers to ... analysisframework This makes cross layer performance analysis and cross layer designdifficult Therefore, new physical layer performance measures are needed for higherlayer performance analysis In this chapter,

Ngày tải lên: 10/09/2015, 15:51

... EM for MC-CDMA 855.9 The MSE performance of MC-CDMA 855.10 BER v.s SNR for different iterations of BI-GDFE and EM for CP-CDMA 865.11 BER v.s number of iterations for BI-GDFE and EM for ... and EM for SCCP 82 5.6 The MSE performance of SCCP 83 Trang 12LIST OF FIGURES5.7 BER v.s SNR for different iterations of BI-GDFE and EM for CDMA 845.8 BER v.s number of iterations for BI-GDFE ... RECEIVER DESIGN FOR BROADBAND WIRELESS COMMUNICATION SYSTEMS VIAEXPECTATION MAXIMIZATION (EM) BASED ALGORITHMS THE-HANH PHAM NATIONAL UNIVERSITY OF SINGAPORE 2007 Trang 2ITERATIVE RECEIVER DESIGN FOR

Ngày tải lên: 12/09/2015, 08:19

... Uniformity L M H HBT is the best for analog LSI circuits Hysteresis H M L HBT is the best for sample and hold circuits Large-signal Collector Efficiency M H H HBT is potentially the best for ... and uniform threshold voltage For the civil applications, HBTs have found numerous application fields such as electronic instruments, optical fiber communications and RF chip sets for wireless ... to analyze and optimize the performance of many different microwave integrated circuits They can also perform yield analysis and optimization for the statistical design of various practical MMICs

Ngày tải lên: 17/09/2015, 17:20

... 19As for SHE injection, the carriers gain energy from the substrate voltage before impinging on the Si-SiO2 interface SHE injection does not occur in most of the circuits except for bootstrap circuits ... decoupling capacitor There are also efforts in the use of resonator circuit for Voltage Controlled Oscillator (VCO) applications Junction capacitance such as capacitance formed by the P+ diffusion region ... waveform It also has an output tuned circuit which is either a series tuned circuit or a parallel tuned circuit that is tuned to the operating frequency and presenting a sinusoidal output waveform

Ngày tải lên: 04/10/2015, 10:25

... 4 1 3 3 p (2.29) 28 RF MEMS Circuit Design for Wireless Communications 2 Elements of RF Circuit Design 2.1 Introduction The design of RF MEMS circuits for wireless applications is predicated upon the ... ground fixed/mobile platform, and (3) the space platform. 4 RF MEMS Circuit Design for Wireless Communications Information  Voice  Broadband data  Messaging  Navigation  DBS  Internet  Video Wireless ... RF MEMS and traditional RF and microwave circuit design. Chapter 1 of RF MEMS Circuit Design for Wireless Communications starts by clearly stating the ubiquitous wireless communications problem, in particular,...

Ngày tải lên: 19/01/2014, 20:20

... California in 1965. The membranes were developed and prepared at UCLA (see Chapter 1). The break for commercial viability came when as an appropriate swelling agent, formamide, was found for ... To determine the potential for a salt to form scale, the ion product of the salt in question (taken in the reject stream) is compared with the solubility product for the salt under the conditions ... higher than the osmotic pressure. For example, for 1,500 ppm TDS brack- ish water, RO operating pressures can range from about 150 psi to 400 psi. For seawater at 35,000 ppm TDS, RO...

Ngày tải lên: 02/04/2014, 15:45