Design of a switched injection-locked oscillator at 2.45 GHz for a local positioning system

Author

Schulz, Markus ; Strobel, Axel ; Joram, Niko ; Ellinger, F.

Author_Institution

Dept. of Circuit Design & Network Theor., Tech. Univ. Dresden, Dresden, Germany

fYear

2014

fDate

6-7 Oct. 2014

Firstpage

116

Lastpage

119

Abstract

In this paper, a fully integrated active reflector transponder for the localization and quick evacuation of passengers in the sea in case that passengers are overboard is presented. The backscatter tag is based on a cross-coupled oscillator topology using the switched injection-locked oscillator (SILO) principle and is implemented in a frequency modulated continuous wave (FMCW) radar. Furthermore, a novel theory for calculating the input referred noise power of a SILO is applied. The presented backscatter tag operates at 2.45 GHz and reaches a steady-state output power of 7.5 dBm. The measured input referred noise power of the SILO reaches a remarkable value of -80 dBm.

Keywords

CW radar; FM radar; UHF oscillators; injection locked oscillators; marine radar; marine safety; radar tracking; cross coupled oscillator topology; frequency 2.45 GHz; frequency modulated continuous wave radar; integrated active reflector transponder; local positioning system; passenger localization; passenger quick evacuation; switched injection locked oscillator; Frequency measurement; Frequency modulation; Impedance; Noise; Oscillators; Power generation; Power measurement; BiCMOS; Chirp radar; FM continuous wave (FMCW) secondary radar; FMCW; distance measurement; frequency modulated (FM) radar; identifiation; radop frequency; switched injection-locked oscillator;

fLanguage

English

Publisher

ieee

Conference_Titel

European Microwave Integrated Circuit Conference (EuMIC), 2014 9th

Conference_Location

Rome

Type

conf

DOI

10.1109/EuMIC.2014.6997805

Filename

6997805