Design of helical antenna for SAW passive wireless temperature sensor

Author

Xin-chen Wang ; Zhi-jun Chen ; Xin Huang ; Peng Ruan ; Ling Jiang

Author_Institution

Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2013

fDate

25-27 Oct. 2013

Firstpage

1

Lastpage

4

Abstract

A sensor antenna which is suitable for using as SAW passive wireless temperature measuring system has been designed based on the basic theory of the helical antenna in this paper. The size of the helical antenna has been identified. Firstly the modeling and optimization of the helical antenna have been carried out by using the HFSS software, thus the final dimension of the helical antenna with 433MHz resonant frequency and 300~500 MHz broadband has been determined. Then a impendence matching network between the antenna and the sensor has been designed by using the ADS software, which makes their input impendence conjugate. The simulation results are in good agreement with the measured ones. The voltage standing wave ratio (VSWR) of the antenna is less than 1.2 over the whole frequency range. Finally the sensor is wireless tested combining with the reader, showing the practicability of the sensor.

Keywords

helical antennas; optimisation; surface acoustic wave devices; temperature sensors; ADS software; HFSS software; SAW passive wireless temperature measuring system; SAW passive wireless temperature sensor; helical antenna; impendence matching network; sensor antenna; Helical antenna; Passive wireless temperature measuring; Surface acoustic wave (SAW);

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2013 Symposium on

Conference_Location

Changsha

Print_ISBN

978-1-4799-3289-4

Type

conf

DOI

10.1109/SPAWDA.2013.6841104

Filename

6841104