rf microwave circuit design for wireless application

... frequently are ignored Trang 19 Microwave Circuits and Circuit Elements 17 lÌ | | 16 The RF and Microwave Circuit Design Cookbook | are used for microwave hybrids and directional ... adhesion layer Trang 21 20 The RF and Microwave Circuit Design Cookbook Microwave Circuits and Circuit Elements 21 microwave circuits where transmission-line structures are not ... 12 The RF and Microwave Circuit Désign Cookbook Microwave Circuits and Circuit Elements 13 ns of information can be used to make very nice inductors, capacitors, ‘out of short- or open-circuited

Ngày tải lên: 09/01/2014, 02:00

... frequently are ignored Trang 19 Microwave Circuits and Circuit Elements 17 lÌ | | 16 The RF and Microwave Circuit Design Cookbook | are used for microwave hybrids and directional ... adhesion layer Trang 21 20 The RF and Microwave Circuit Design Cookbook Microwave Circuits and Circuit Elements 21 microwave circuits where transmission-line structures are not ... 12 The RF and Microwave Circuit Désign Cookbook Microwave Circuits and Circuit Elements 13 ns of information can be used to make very nice inductors, capacitors, ‘out of short- or open-circuited

Ngày tải lên: 23/02/2014, 22:20

... microwave circuits’, IEE Proc Part H, 133(5), 351–3 62, 1986 [54] P.J.C Rodrigues, ‘A general mapping technique for Fourier transform computation in nonlinear circuit analysis’, IEEE Microwave ... currents in the example circuit for a two-tone input signal and a time-domain analysis 42 NONLINEAR. .. in the study of nonlinear active microwave circuits’, IEEE Trans Microwave Theory Tech., ... performance of MESFET distributed amplifiers using the Volterra series representation’, IEEE Trans Microwave Theory Tech., MTT-34, 1038–1317, 1986 [29 ] S.A Maas, Nonlinear Microwave Circuits,

Ngày tải lên: 08/08/2014, 03:20

... microwave gain of a device. Therefore, temperature and bias voltages and currents must be specified when a microwave measurement is performed. These considerations are obvious for small-signal characterisation; ... characterisation of an active device for nonlinear applications must therefore include measurements in several different static conditions for a complete characterisation even if the application (e.g. Class-B ... milliseconds for thermal phenomena and down to microsec- onds for trapping and de-trapping phenomena. A superimposed microwave signal, be it small or large, does not have the time within a microwave

Ngày tải lên: 08/08/2014, 03:20

... parameter for a pinched-off... equivalent circuit gives interesting information on the structure of the device, both as a feedback to technology and for a qualitative evaluation of the device performances ... consequences on the performances of a device are less pronounced. The loss of accuracy caused by the imperfect model is therefore limited. We now rewrite the above considerations for a two-port device ... g ss (v) = ∂f RF (v) ∂v (3.48) Then, when a large-signal voltage v(t) = v DC + v RF (t) is applied, the current is computed as (Figure 3.33): i(t) = f RF (v(t)) + f DC (v DC ) −f RF (v DC )(3.49)

Ngày tải lên: 08/08/2014, 03:20

... the performance of a device or circuit will be gained in a short time. Simple models have been used for a long time for power amplifier design [124– 129]. The equivalent circuit can be, for instance, ... device technology to microwave circuit performance’, IEEE Trans. Microwave Theory Tech., MTT-37(3), 457–467, 1989. [36] R.S. Muller, T.I. Kamins, Device Electronics for Integrated Circuits, Wiley, ... responsible for good or bad performances of the circuit are not clear, unless a detailed and time-consuming analysis of many simulations is performed by a skilled designer. A simpler approach

Ngày tải lên: 08/08/2014, 03:20

... in most normal R L i D ( t ) V GG V DD L RFC L RFC I 0 C RFS C RFS P in P out v DS ( t ) Z L, n Input network Output network L RFC = Choke inductor C RFS = DC-blocking capacitor Figure 4.33 Simplified ... specified during the design phase; it is a specification to be fulfilled by a separately designed driver circuit using information about the input-port characteristics MULTI-HARMONIC DESIGN FOR HIGH POWER ... it is helpful to make some simple considerations about the active devices, FETs for instance, used for microwave applications. As seen above, they can be effectively treated as voltage-controlled

Ngày tải lên: 08/08/2014, 03:20

... performances are satisfactory, at least for basic applications. However, many oscillatory performances have an intrinsically nonlinear nature, and they are becoming increasingly important in microwave ... description of the oscillatory circuits more commonly used in microwave circuits is given, and a brief recapitulation of the main methods available for ‘unstable’ circuit design is provided. Oscillators ... nonlinear regime for the design of general microwave circuits free of spurious oscillations of nonlinear origin or for the design of intentionally unstable nonlinear circuits, as frequency dividers

Ngày tải lên: 08/08/2014, 03:20

... is therefore ideal for a complete study of the behaviour of a circuit; however, the stability of branches or solutions must be verified. In general, this is straightforwardly done by application ... in the circuit or the injected one... ‘A design approach for sub-harmonic generation or suppression in nonlinear circuits’, Proc GAAS 2002 , Milan (Italy), 2002 [5] S.A Maas, Microwave ... EQUATIONS FOR THE EXAMPLE CIRCUIT WITH N = 3 For our example circuit, the harmonic balance (Kirchhoff’s) system of equations in the nodal formulation is described in detail for the sake of clarity

Ngày tải lên: 08/08/2014, 03:20

... and S Asgaran, "A 2mW 400MHz RF transceiver SoC in 0.18um CMOS technology for wireless medical applications," in Proc IEEE Radio Frequency Integrated Circuits Symp (RFIC), 2008, pp 285-288 [10] ... Solid-State Circuits, vol 44, no 5, pp 1391-1400, May 2009 [52] E A Vittoz, M G R Degrauwe, and S Bitz, "High-performance crystal oscillator circuits: theory and application, " IEEE J Solid-State Circuits, ... VI Abstract For implantable and wearable biomedical applications, such as wireless neural recording and capsule endoscopy, there has been an increasing demand for the development of wireless transmitter

Ngày tải lên: 09/09/2015, 11:19

... Circuit Design for Linearizing Transmitter Sim Chan Kuen NATIONAL UNIVERSITY OF SINGAPORE 2003 Circuit Design for Linearizing Transmitter Sim Chan Kuen, ... test for ROF system 83 4.26 Multi-Carrier Test for ROF system(Before Linearization) 85 4.27 Multi-Carrier Test for ROF system(After Linearization) 85 viii List of Tables 4.1 Performance ... results performed by different design 67 Chapter 1 Introduction 1.1 Background The primary purpose of any wireless communication systems is to transmit or receive information. The information

Ngày tải lên: 03/10/2015, 20:57

... Antenna Circuit Design for RFID Applications Author: Youbok Lee, Ph.D Microchip Technology Inc REVIEW OF A BASIC THEORY FOR RFID ANTENNA DESIGN INTRODUCTION Current and Magnetic Fields Passive RFID ... significantly with high Q circuits This section is written for RF coil designers and RFID system engineers It reviews basic electromagnetic theories on antenna coils, a procedure for coil design, calculation ... EQUATION 15: For a The resistance must be kept small as possible for higher Q of antenna circuit For this reason, a larger diameter coil as possible must be chosen for the RFID circuit Table

Ngày tải lên: 11/01/2016, 11:33

... MAC designs should control contentions and collisions over the shared wireless channel and deliver stable performance Protocol overhead scalability The third aspect in scalable wireless MAC design ... mechanism [23] by utilizing RTS/CTS handshake PERFORMANCE ANALYSIS In this section, we analyze the scalable performance obtained by TMAC in high-speed wireless LANs, under various user populations ... evaluate scalability performance, channel efficiency, and sharing features achieved by TMAC in wireless LANs Five environment parameters are varied in the simulations to study TMAC’s performance, including

Ngày tải lên: 22/06/2014, 19:20

... and J W Modestino (1) Typically, for a uniform MPSK signaling scheme, we would expect Rc ≤ (2) Rc to optimize the performance However, for the adaptive nonuniform modulation/coding scheme considered ... error concealment for video In Section 3, we briefly describe the channel models used and provide the performance analysis for the coded and uncoded systems employing nonuniform MPSK over Rician ... cases of channel state information (CSI): perfect CSI and no CSI From the results in [17] we have P(x → x) ≤ exp − ⎧ ⎪d (x, x) ⎨ ME d2 (x, x) = ⎪ ⎩d for perfect CSI, ME (x, x) for no CSI (4) The quantities

Ngày tải lên: 22/06/2014, 19:20

... doi:10.1155/2008/457307 Research Article Code Design for Multihop Wireless Relay Networks ´ ´ Frederique Oggier and Babak Hassibi Department of Electrical Engineering, California Institute of Technology, Pasadena ... multiple antennas What the relays perform on their received signal depends on the chosen protocol, generally categorized between amplify-and-forward (AF) and decode-and-forward (DF) In order to evaluate ... codes for the amplify-and-forward cooperative channel,” IEEE Transactions on Information Theory, vol 53, no 2, pp 647–663, 2007 Y Jing and B Hassibi, “Distributed space-time coding in wireless

Ngày tải lên: 22/06/2014, 19:20

... the worst performing user for scenario 3, B PSK/QPSK mod- ulation and source rate of 100 kbps/200 kbps; (b) performance improvement for the three scenarios in forward mode; (c) performance improvement ... worst performing user (dB) Forward mode w/oJO Forward mode w/J O ARQ mode w/oJ O ARQ mode w/J O (b) Figure 6: Cumulative probability density function (CDF) of the PSNR of the worst performing ... user. Therefore, the larger the PSNR is, the better the performance is. As an example, we use the objective function given in (15), which maximizes the worst-case user’s performance. Therefore, the

Ngày tải lên: 22/06/2014, 22:20

... performance of the CBR mode is excellent even for lower delays, but at least Thomas Stockhammer 13 Table 2: Proposed video and transport features for different applications with performance ... only results for synchronized reference frames for a feedback delay of about 250 ms are shown. Other feed- back modes show similar performance for this typical feed- back delay. For the slice ... 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

Ngày tải lên: 22/06/2014, 23:20

... 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. T he data is ... 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- ... for Bayer format image data have been reported to get higher-compression perfor- mance [2–7]. However, all those algorithms are proposed for lossy compression and are not suitable for the medical

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) aspects are jointly considered and optimized: the decisions to be taken for cluster formation rely ... energy-efficient scheme for data transmission in a wireless sensor network (WSN) is proposed, having in mind a typical application including a sink, which periodically triggers the WSN, and nodes uniformly distributed ... on Wireless Communications and Networking 2005:5, 672–685 c 2005 Chiara Buratti et al Cross-Layer Design of an Energy-Efficient Cluster Formation Algorithm with Carrier-Sensing Multiple Access for

Ngày tải lên: 23/06/2014, 00:20

... 4 24 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 ... both 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, ... 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...

Ngày tải lên: 19/01/2014, 20:20