Ferrite-Loaded SIW Bowtie Slot Antenna With Broadband Frequency Tunability

Author

Li-Rong Tan ; Rui-Xin Wu ; Cong-Yi Wang ; Yin Poo

Author_Institution

Sch. of Electron. Sci. & Eng., Nanjing Univ., Nanjing, China

Volume

13

fYear

2014

fDate

2014

Firstpage

325

Lastpage

328

Abstract

We present a novel approach to realize broadband frequency tunability of ferrite-loaded substrate integrated waveguide (SIW) antennas by simultaneously changing the location of ferrite slabs in the antennas (mechanical tuning) and bias magnetic fields (magnetical tuning). The proposed method is verified by the antenna designed in X-band with experiments. The measurements show that the antenna has frequency tuning range over 14.94% (9.23-10.69 GHz) and gains over 5 dBi. The radiation pattern of the antenna changes little in tunings, showing a good property for tunable antennas.

Keywords

antenna radiation patterns; bow-tie antennas; ferrite-loaded waveguides; microwave antennas; slot antennas; substrate integrated waveguides; bias magnetic fields; broadband frequency tunability; ferrite-loaded SIW bowtie slot antenna; ferrite-loaded substrate integrated waveguide antennas; frequency tuning range; radiation pattern; Broadband antennas; Cavity resonators; Ferrites; Resonant frequency; Slabs; Tuning; Broadband frequency tunability; ferrite; magnetically tunable antenna; mechanically tunable antenna; reconfigurable antenna; substrate integrated waveguide (SIW);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2305431

Filename

6736099