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.
Simultaneous optimization of both the noise figure and gain of a low noise amplifier employing capacitive shunt-shunt feedback and an LC-ladder input matching network is discussed. The amplifier operates from 800 MHz (below the GSM band) to well above the ultra-wideband and as such is suitable for software-defined radio implementations. An S21 of 20 dB is obtained for a minimum noise figure of 2.1...
Simulation results of a LC-ladder and capacitive feedback low noise amplifier over the 60 GHz unlicensed band is presented. A gain of 14.8 dB was obtained with S11 less than -7.6 dB and a noise figure of 6 dB. These results deviate significantly from theory however and as such possible explanations for these deviations are presented. Other design trade-offs present in very wideband designs at lower...
In this paper a new low noise amplifier configuration is proposed to achieve wideband operation. This configuration consists of an LC-ladder filter and a common-emitter stage employing shunt-shunt capacitive feedback to realize wideband matching. Design equations for this configuration are derived, as well as equations for the important performance measures namely noise figure, gain and IIP3. The...
DSSS (direct sequence spread spectrum) is a form of digital communication where each bit is represented by a unique spreading sequence. DSSS is a promising technique for implementing high speed wireless links. For any DSSS communication system to be successful, an effective, low cost transceiver is required. This paper presents transceiver systems which have the potential to fulfil this role. An analogue...
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.