Download CMOS Wireless Transceiver Design by Jan Crols, Michiel Steyaert (auth.) PDF

By Jan Crols, Michiel Steyaert (auth.)

ISBN-10: 1441951830

ISBN-13: 9781441951830

ISBN-10: 1475747845

ISBN-13: 9781475747843

The global of instant communications is altering very speedily considering many years. The advent of electronic information conversation together with electronic sign strategy­ ing has created the root for the improvement of many new instant purposes. top of the range electronic instant networks for voice verbal exchange with worldwide and native insurance, just like the GSM and DECT method, are just faint and early examples of the big variety of instant purposes that may turn into to be had within the rest of this decade. the hot evolutions in instant communications set new specifications for the trans­ ceivers (transmitter-receivers). larger working frequencies, a reduce energy consump­ tion and a truly excessive measure of integration, are new standards which ask for layout techniques rather diverse from the classical RF layout strategies. The integrata­ bility and tool intake relief of the electronic half will extra increase with the continuing downscaling of applied sciences. this can be even if different for the analog transceiver front-end, the half which plays the interfacing among the antenna and the electronic sign processing. The analog front-end's integratability and tool intake are heavily relating to the actual boundaries of the transceiver topology and never loads to the scaling of the used know-how. bankruptcy 2 offers an in depth examine of the extent of integration in present transceiver cognizance and analyzes their boundaries. In bankruptcy three of this ebook the advanced sign procedure for the research and synthesis of multi-path receiver and transmitter topologies is introduced.

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11. A large portion of the power will be situated at low frequencies. It can be said that this is the case because the information sources (the channels) within the RF signal are of a low frequency nature. The fact that most of the power of the parasitic signal generated by RF-to-LO crosstalk is situated at low frequencies poses again a problem for the zero-IF receiver whose wanted signal is situated at baseband. 1 0. The parasitic baseband signal due to crosstalk between the RF and LO input of a high frequency mixer.

2 Direct Upconversion. The direct upconversion transmitter directly upconverts the modulated baseband signals to their carrier frequency, equal to the local oscillator frequency. Fig. 15 shows this topology. The direct upconversion topology can be integrated in a much better way than the classically used heterodyne structure because there is no need for the suppression of any mirror signal generated during upconversion. In the direct upconversion topology the upper and lower sideband of the wanted signal are each others mirror signal and unwanted interference is prevented by doing the upconversion in quadrature.

Although ever more analog integrated IF filters are published [Silva JSSC92, Silva KUL92, Wang ISSCC89, Wang JSSC90], due to their intrinsic lower power consumption ceramic resonators are still used in most applications. Again, these are high quality discrete components and their use is very expensive compared to integrated components. 2 Multi-Stage IF Receivers. 4 GHz, to ... ). The signal bandwidths however stay the same (between 200kHz and 2 MHz). The same goes for the total bandwidth reserved for the application (I 0 to 50 MHz).

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CMOS Wireless Transceiver Design by Jan Crols, Michiel Steyaert (auth.)

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