Browsing by Subject "Radio frequency"
Now showing items 1-20 of 179
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5G multi-antenna vehicle scattering characterization
(Universitat Politècnica de Catalunya, 2019-06-20)
Master thesis
Open AccessIn today's era of internet, everything is tending to be intelligent enough to be managed by itself. Following the same line, vehicles are more than vehicular machines. They are tending to be autonomously driven, able to ... -
A battery-less, self-sustaining RF energy harvesting circuit with TFETs for µW power applications
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Open AccessThis paper proposes a Tunnel FET (TFET) power management circuit for RF energy harvesting applications. In contrast with conventional MOSFET technologies, the improved electrical characteristics of TFETs promise a better ... -
A case of acquisition, transmission and use of information to control a manufacturing process
(Universitat Politècnica de Catalunya, 2009-10-08)
Master thesis
Open Access -
A compact noise model for carbon nanotube FETs
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Conference report
Restricted access - publisher's policyThis paper focuses on the development of a compact noise model for radiofrequency (RF) carbon nanotube field-effect transistors (CNFET). The noise mechanisms in these devices are discussed and the impact of the different ... -
A high dynamic-range RF programmable-gain front end for G.hn RF-Coax in 65-nm CMOS
(IEEE Microwave Theory and Techniques Society, 2012-10)
Article
Restricted access - publisher's policyA high-dynamic-range programmable-gain inductorless RF front end suitable for the RF-coax bandplan of the G.hn recommendation is presented. A double-input RF programmable gain amplifier (DI-RFPGA) with switchable capacitive ... -
A High-Efficiency RF Harvester with Maximum Power Point Tracking
(Multidisciplinary Digital Publishing Institute (MDPI), 2018)
Conference report
Open AccessThis paper presents the implementation of a high-efficiency radiofrequency (RF) harvester, which consists of a rectenna and a maximum power point tracker (MPPT). The rectenna was characterized from -30 dBm to -10 dBm at ... -
A low-power RF front-end for 2.5 GHz receivers
(Institute of Electrical and Electronics Engineers (IEEE), 2008)
Conference report
Open AccessThis paper presents a low power and low cost front end for a direct conversion 2.5 GHz ISM band receiver composed of a 16 kV HBM ESD protected LNA, differential Gilbert-cell mixers, and high-pass filters for DC offset ... -
A novel approach to MISO interference networks under maximum receive-power regulation
(WSEAS Press, 2018-07-01)
Article
Open AccessAn aggressive frequency reuse is expected within the next years in order to increase the spectral ef¿ciency. Multiuser interference by all in-band transmitters can create a communication bottleneck and, therefore, it is ... -
A novel reconstruction algorithm for the improvement of SMOS brightness temperatures
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyRFI (Radio Frequency Interference) sources, Sun signal and even land-sea transitions may generate large sidelobes that corrupt SMOS brightness temperature products and therefore, the quality of the soil moisture and sea ... -
A review of RFI mitigation techniques in microwave radiometry
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-12-17)
Article
Open AccessRadio frequency interference (RFI) is a well-known problem in microwave radiometry (MWR). Any undesired signal overlapping the MWR protected frequency bands introduces a bias in the measurements, which can corrupt the ... -
A RF generator based on a FPGA system
(Universitat Politècnica de Catalunya, 2014-03-06)
Master thesis
Open Access
Covenantee: Beijing hang kong hang tian da xue[ANGLÈS] This work is part of ongoing research conducted at Beihang University relating to signal generating. The primary objective of this thesis was to develop a flexible, high-performance Radio Frequency (RF) generator ... -
A RF-MEMS switchable CPW air-bridge
(2012)
Conference lecture
Open AccessThis work presents a new shunt-type ohmic contact RF-MEMS switch specifically designed as a switchable CPW air bridge. The switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective ... -
A transient model for RF cavity analysis under beam loading
(2010-04)
Article
Restricted access - publisher's policyThere are two important considerations in the development of an electrical model for RF cavities to be used for system analysis or LLRF loop design, being: transient response and cavity impedance mismatch. In the literature, ... -
Absorptive frequency selective limiter for multiplexers
(Universitat Politècnica de Catalunya, 2012-07-05)
Master thesis
Restricted access - author's decisionRF & Microwave Receivers are used to detect low level signals. Therefore require high gain and low noise sensitive circuits at the input. These circuits (most of all LNA) are often susceptible to damage if exposed to ... -
Actualización, adaptación y evolución del sistema de automedidas de receptores analógicos de TV
(Universitat Politècnica de Catalunya, 2016-08)
Master thesis (pre-Bologna period)
Open Access
Covenantee: SonyEl proyecto consiste en la elaboración de un programa en entorno LabView para realizar medidas automáticas de sintonizadores de TV para la empresa Sony. Partimos de un programa básico de medidas semi-automáticas con la ... -
Adjustment of Xia - Bertoni's propagation model for planning urban mobile environments through campaign results measurement
(Universitat Politècnica de Catalunya, 2010-07-23)
Master thesis
Open Access -
Aging in CMOS RF linear power amplifiers: an experimental study
(IEEE Microwave Theory and Techniques Society, 2021-02-01)
Article
Open AccessAn extensive experimental analysis of the hot carrier injection (HCI) and bias temperature instability (BTI) aging effects on RF linear power amplifiers (PAs) is presented in this article. Two different 2.45-GHz PA topologies ... -
An in-band frequency agility modem imlemented with a DSP device
(Institute of Electrical and Electronics Engineers (IEEE), 1989)
Conference report
Open AccessThe authors present a modem with in-band frequency agility that has been implemented with the TMS 32010 signal processor. A strategy based on embedded real-time channel estimation (RTCE) has been adopted to manage the ... -
An interference analysis on cellular mobile radiocommunications using CAD/CAE techniques
(Institute of Electrical and Electronics Engineers (IEEE), 1992)
Conference lecture
Open AccessThe cochannel interference in a base-station's receiver of one cell produced by a mobile in another cell that uses the same frequency is studied. An OMNISYS simulation model of channel-plus-receiver is proposed and used ... -
Anàlisi de l'assignació de canals en GuifiSants
(Universitat Politècnica de Catalunya, 2020-06-21)
Bachelor thesis
Open AccessLes xarxes de comunicacions són un element essencial que ens permeten avui en dia estar interconnectats a escala mundial des de qualsevol lloc i amb qualsevol classe de dispositiu. Habitualment per accedir a la xarxa més ...