search query: @keyword integrated circuits / total: 39
reference: 2 / 39
« previous | next »
Author:Ollikainen, Jussi
Title:Laajakaistaisen RF-etupään suunnittelu kognitiiviseen radiovastaanottimeen
Design of a broadband RF-frontend for cognitive radio
Publication type:Master's thesis
Publication year:2010
Pages:xv + 63      Language:   fin
Department/School:Elektroniikan, tietoliikenteen ja automaation tiedekunta
Main subject:Piiritekniikka   (S-87)
Supervisor:Ryynänen, Jussi
Instructor:Stadius, Kari
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201203131522
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto  1251   | Archive
Keywords:integrated circuits
RF-front-end
cognitive radio
interference cancellation
CMOS
LTE
integroidut piirit
RF-etupää
kognitiivinen radio
häiriön kumoaminen
Abstract (eng): The purpose of this Master's Thesis was to implement a broadband RF-frontend for a cognitive radio spectrum sensor.
The main focus in the designing was to achieve high linearity.
Broadband receiver has to be able to withstand large interference signals so that signal reception won't be disturbed.
Therefore, several linearity improvement techniques for RF-frontends were researched and their compatibility for a cognitive radio were compared.

The main challenge in the design of a broadband RF-frontend is to obtain high linearity, low noise figure and sufficient gain with low power consumption.
To achieve these goals noise canceling and linearity improving circuit techniques were researched in this work.
In addition, down-conversion mixer topology was carefully selected.

Broadband RF-front end was implemented as a part of a cognitive radio spectrum sensor.
It covers LTE-bandwidth 0,7 - 2,6 GHz and achieves 2-dBm linearity thus meeting the linearity requirement set by the interference signals for cognitive radio spectrum sensor.
Receiver noise figure is 10 dB and it has 32-dB average gain.
Silicon die area of the receiver is 0,8 mm2.
Abstract (fin): Tämän diplomityön tavoitteena oli toteuttaa laajakaistainen RF-etupää kognitiivisen radion spektrisensoriin.
Suunnittelussa keskityttiin erityisesti hyvän lineaarisuuden saavuttamiseen, koska vastaanottimen tulee kyetä sietämään suuria häiriösignaaleita ilman, että signaalin vastaanotto häiriintyy.
Tavoitteen saavuttamiseksi työssä tutkittiin olemassa olevia tekniikoita, joilla voidaan parantaa RF-etupään lineaarisuutta sekä tarkasteltiin niiden soveltuvuutta kognitiiviseen radiovastaanottimeen.

Suurin haaste laajakaistaisen RF-etupään toteutuksessa on hyvän lineaarisuuden, alhaisen kohinaluvun ja riittävän vahvistuksen saavuttaminen alhaisella tehonkulutuksella.
Niiden saavuttamiseksi työssä tutkittiin kohinaa kumoavia ja lineaarisuutta parantavia vahvistinrakenteita.
Lisäksi sekoittimen valintaa ja vastaanottimen muiden lohkojen suunnittelua hyödynnettiin koko vastaanottimella saavutettavan lineaarisuuden parantamiseen.

Laajakaistaisen RF-etupään lisäksi toteutettiin kantataajuuspuskuri.
Kognitiivisen radion spektrisensoriin toteutettu radiovastaanotin kattaa LTE-taajuuskaistan 0,7 - 2,6 GHz ja saavuttaa 2 dBm lineaarisuuden, joka on kognitiivisen radion spektrisensorin häiriösignaalien asettamaa lineaarisuusvaatimusta suurempi.
Vastaanottimen kohinaluku on 10 dB ja keskimääräinen vahvistus 32 dB.
Piirin pinta-ala on 0,8 mm2.
ED:2010-08-20
INSSI record number: 40210
+ add basket
« previous | next »
INSSI