The design of low power ultra wideband transceiver

... THE DESIGN OF LOW POWER ULTRAWIDEBAND TRANSCEIVERS Wang Lei (B Sci, Beijing Technology and Business University, China) (M Eng, Tsinghua University, China) A THESIS SUBMITTED FOR THE DEGREE OF ... Organization of The Thesis The following thesis is organized as follows Chapter will give a brief literature review on the architectures of IR UWB beamforming transmitter and receiver The sub GHz UWB transceivers ... θ is the polar co-ordinate, N is the number of antenna elements, d is the spacing between the antenna elements,  is the angle at which the main lobe of the beam is focused and k=2π/ is the propagation...

Design of low power short distance transceiver for wireless sensor networks

... for Output Network and Power 133 Appendix B Sub-Functions 133 iv SUMMARY This thesis presents the design of a low- power 2.4-GHz BPSK/OOK transceiver for shortdistance wireless ... dBm output power 15 The absolute power consumptions for sensor RX should be below mW which is comparable to the transceivers for low- power sensors as reported in [17, 21, 24, 25] For gateway ... here 2.1.1 Standards for Low- Power Short- Distance Communications Before the transceiver designs are presented, the commonly adopted standards for low- power short- distance communications including...

Design of low power CMOS UWB transceiver ICs

... WEI Degree: Master of Engineering Department: Electrical and Computer Engineering, NUS Thesis Title: Design of Low Power CMOS UWB Transceiver ICs Abstract Two non-coherent UWB transceivers for ... UWB detector 50 Fig 4.1: Low power burst mode UWB transceiver architecture 51 Fig 4.2: Measured result for low power burst mode UWB transceiver 52 Fig 4.3: Chip microphotograph of low ... Detector 44 Chapter Proposed UWB Transceiver Design 51 4.1 A CMOS Low Power Burst Mode UWB Transceiver 51 4.2 A Burst Mode Super Regenerative UWB Transceiver 54 4.3 Layout...

Analysis and design of ultra wideband transceiver and array

... analysis and design of ultra- wideband (UWB) radio transceivers and arrays UWB radio transceivers can be contrasted from their narrowband radio counterparts by the signals that they transmit and ... time -of- arrival standard deviation at ± 10° for six cases of SNR 53 3.3 Theoretical and experimental time -of- arrival standard deviation at ± 20° for six cases of SNR 54 3.4 Measured mean and standard ... of mm layer of tap water 132 LIST OF TABLES xv LIST OF TABLES Table: 3.1 Theoretical and experimental time -of- arrival standard deviation at boresight for six cases of SNR 53 3.2 Theoretical and...

Báo cáo hóa học: "Research Article A Novel Approach to the Design of Oversampling Low-Delay Complex-Modulated Filter Bank Pairs" doc

... notice that this time the tolerance mask is always touched by the magnitude response This can be traced back to the fact that, for the SFB, the steps of the tolerance mask are much smaller, not ... in the passband and the transition bands As the objective function to be minimised we adopt a particular representation of the group delay [20], while the stopband magnitude speciﬁcations of the ... properties are designed and their performances are compared Moreover, the eﬀect of the number of subbands, the oversampling factors, and the length of the prototype ﬁlter are also studied Using the...

design of low noise, low power linear cmos image sensors

... advantages of the CMOS image sensors over CCD based imagers is the lower power consumption of CMOS circuits The usage of closed loop opamps in place of simpler two transistor source follower bu ... architecture of the linear image sensor is presented in this chapter Even though, the design issues of CMOS image sensors are presented with respect to area format image sensors they are applicable to linear ... manufacture CMOS image sensors cuts cost dramatically because of the xed costs of the plant are spread over a much larger number of devices As a result of this economy scale, the cost of fabricating a CMOS...

Design implementation of low power MAC protocol for wireless body area network

... This page intentionally left blank Design and Implementation of Low Power MAC Protocol for Wireless Body Area Network by Pan Rui Submitted to the Department of Electrical and Computer Engineering ... fulﬁllment of the requirements for the degree of Doctor of Philosophy Abstract A wireless body area network (WBAN) is a network consists of wearable wireless computing devices Advances in low power ... event-driven simulator for wireless sensor networks, body area networks and general networks of low- power embedded devices [22] The simulator is developed by Australia’s Information Communications...

The design of mat foundations

... Find the soil pressures at the mat invert Find the centroid of the column loads (location of the resultant R) with respect to a new x’y’ coordinate system located at the lower left corner at mat, ... acting as stiffness for the mat grillages Details of a mat foundation, serving as the slab of a one-story basement Compensated mat foundations If zero settlement is desired, the excavated soil weight ... moment diagrams Determine the reinforcement requirements The maximum positive moment (bottom bars) of the mat = 2281 kip-ft The maximum negative moment (top bars) of the mat = 2448 kip-ft C = 0.85...

Hydrodynamic and performance of low power turbines: conception, modelling and experimental tests

... of flow and binary capacity depends on the size of the rod when compared to the size of the handle There is an advantage in using the largest possible rod and in reducing the length of the handle ... Figure Variation of discharge and binary with two and three pistons of double or single effect out of phase of 90º and 120º 3.2 Positive displacement pumps This engine consists mainly of a chamber ... the analysis of different scenarios and boundary conditions which are difficult to model experimentally These codes allow a better understanding of different hydraulic turbines and flow conditions...

Tài liệu The Design of Rolling Bearing Mountings P2 ppt

... accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the rotary table Therefore, the rigidity of the thrust bearings is especially important To increase the ... common: rolling bearings For this reason the brief texts concentrate on the rolling bearing aspects of the applications The operation of the machine allows conclusions to be drawn about the operating ... lubrication (FAG rolling bearing grease Arcanol L71V) Shaft seals prevent the ingress of dirt 22: Flywheel bearing arrangement of a car body press The Design of Rolling Bearing Mountings PDF 3/8:...

Tài liệu The Design of Rolling Bearing Mountings P1 pptx

... common: rolling bearings For this reason the brief texts concentrate on the rolling bearing aspects of the applications The operation of the machine allows conclusions to be drawn about the operating ... is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the upper thrust bearing The radial ... preloading the bearings in the axial direction The bearing seats on the shaft and in the end cap bores must be well aligned To allow the spring washer to adjust the bearings axially, the outer...

Tài liệu The Design Of Manufacturing Systems P2 docx

... with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) is the ranking of the generated redesign ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to ﬁnd out if the design can be ... both the syntactic-level and semanticlevel sharing of information One of the major bottlenecks in building integrated design- manufacturing systems is the incomprehension of the language of Computer-Aided...

Tài liệu The Design Of Manufacturing Systems P1 pptx

... know the prices of chemicals in the various markets and the operating costs of processes, the problem is then to decide the operating level of each process and amount of each chemical in the list ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...

Tài liệu The Design of Rolling Bearing Mountings P1 docx

... accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the rotary table Therefore, the rigidity of the thrust bearings is especially important To increase the ... is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the upper thrust bearing The radial ... common: rolling bearings For this reason the brief texts concentrate on the rolling bearing aspects of the applications The operation of the machine allows conclusions to be drawn about the operating...

Tài liệu The Design of Rolling Bearing Mountings P2 pdf

... roughening of the surfaces (increased running noise) Work end Bearing dimensioning The size of the bearings is dictated by the shaft diameter, which in turn is based on the anticipated vibrations The bearing ... roller bearing FAG NU1026M at the drive end is the floating bearing Heat expansion in the axial direction is freely accommodated in the bearing The cylindrical roller bearing also accommodates the ... processibility of the material Rolls 1, and are subjected to deflection under the high loads in the rolling gap In order to still achieve the thickness tolerances of the sheets in the micrometer range, the...

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