Sökning: "multi-band radio"

Visar resultat 1 - 5 av 18 avhandlingar innehållade orden multi-band radio.

1. 1. System-on-package solutions for multi-band RF front end

   Författare :Xinzhong Duo; Li-Rong Zheng; Kari Halonen; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chip-package co-design; multi-band radio; system-on-package; Electronic structure; Elektronstruktur;

   Sammanfattning : Advances in microelectronics technology have enabled us to integrate a complex electronic system (such as a radio) on a single chip or in a single package module, known as system-on-chip (SoC) and system-on-package (SoP) paradigms. This brings not only new opportunities for system integration, but also challenges in design and implementation. LÄS MER

3. 2. Methodologies and Tools for the Design and Optimization of Multi-Standard Radio Receivers

   Författare :Delia Rodríguez de Llera González; Mohammed Ismail; Ana Rusu; Patrick Haspel; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Design Methodologies; Receiver; ADC; Multi-Agent System; Behavioural System; Frequency Planning; Multi-standard; Multi-band; Optimization; Information technology; Informationsteknik;

   Sammanfattning :  One of the main challenges posed by 4G wireless communication systems is achieving flexible, programmable multi-standard radio transceivers with maximum hardware share amongst different standards at a minimum power consumption. Evaluating the feasibility and performance of different multi-standard/multi-band radio solutions at an early stage, i. LÄS MER

4. 3. Multi-Band Multi-Standard CMOS Receiver Front-Ends for 4G Mobile Applications

   Författare :Saul Alejandro Rodriguez Duenas; Ana Rusu; Mohammed Ismail El-Naggar; Erik Bruun; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CMOS; LNA; mixer; 4G; Electronics; Elektronik;

   Sammanfattning : The development of the transistor and its continuous down-scaling has allowed during the last decades the appearance of cheap wireless communication systems targeting consumer products. The complexity of these systems has increased dramatically during the last years, mainly fueled by both the Moore law and improvements in communication theory. LÄS MER

5. 4. Ultra-wideband Antenna and Radio Front-end Systems

   Författare :Magnus Karlsson; Anders Rydberg; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wireless communication; ultra-wideband; radio communication; UWB bandwidth; antenna parallelism; Electrical engineering; Elektroteknik;

   Sammanfattning : The number of wireless communication applications increase steadily, leading to the competition for currently allocated frequency bands. Pressure on authorities around the world to permit communications in higher and wider frequency ranges to achieve higher wireless capacity than those existed in the past has resulted in several new specifications. LÄS MER

7. 5. Design, Characterization, and Calibration of Low-Noise Terahertz Receivers

   Författare :Olle Nyström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; receiver characterization; instrumentation; antenna design; Radio astronomy; calibration; optics;

   Sammanfattning : This thesis is focused on the field of instrumentation for radio-astronomy and atmospheric science, and specifically deals with problems such as optical design and its verification, horn antennas and receiver optics’ components, different aspects of measurement systems in order to characterize low-noise THz receivers, and its calibration techniques.Ultra low-noise Terahertz receivers, used in radio-astronomy, are typically coupled to the telescope system through relay optics that provides guiding of the signal to the receiver frontend with minimal loss. LÄS MER