The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A power-efficient high data-rate OFDM based wideband radio front-end implemented in 90nm CMOS technology using a combination of circuit, system, silicon integration, and analog built-in-self calibration techniques is presented. These techniques are illustrated in the context of a direct conversion wideband DVB-H/ISDB-T receiver front-end signal path operating over the 470 to 702MHz bands, including...
In the last years EHF (Extremely High Frequency / 30-300 GHz) band is acquiring more and more interest in different fields, such as telecommunications, radar applications and Earth observation, due to advantageous characteristics. Actually, the higher operating frequency with respect to traditional ranges (Ka and lower) allows the achievement of some advantages: no crowding in frequency and hence...
We describe the design of a fifth order opamp-RC filter in a 65 nm digital CMOS process. Designed for a WLAN receiver chain, the baseband filter has a bandwidth of 9 MHz and features extensive use of digital hardware to correct for analog imperfections and thereby relaxing area and power requirements. Measurements show a 24 dB adjacent channel attenuation and an out-of-band IIP3 of 33 dBm. The complete...
Of late in the field of Information Security, we have plenty of security tools which are made to protect the transmission of multimedia objects. But approaches for the security of text messages are comparatively less. In this paper, a security model is proposed which imposes the concept of secrecy over privacy for text messages. This model combines cryptography, steganography (taken as security layers)...
The dynamic growth in the field of Information communication has hiked the ease of Information transmission. But this type of real advancement in other sense has explored so many possibilities of information being snooped, at the time of communication in between the sender and the intended receiver. So, day by day Information Security is becoming an inseparable part of Computing and Communication...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.