Design of a compact wearable single-arm spiral antenna for satellite communications

Spiral antennas are a popular choice for satellite communication systems due to their small size, broadband, circular polarisation and high gain. This paper presents a novel design of an Archimedean single-arm spiral antenna fed through a coaxial feed for operation in X and Ku frequency bands covering 8 GHz to 18 GHz frequencies. The antenna has very good impedance matching (better than -10 dB) throughout the frequency range, good right hand circular polarisation (≤3 dB) and offers a maximum peak gain of 9.1 dBi. The radiation characteristics, efficiency, gain and compact size make this antenna suitable for rigid, mobile and airborne terminals. The compact size also makes the proposed antenna good candidate for wearable/poartable wireless communication devices.

[1]  R. T. Gloutak,et al.  Two-arm eccentric spiral antenna , 1997 .

[2]  J. Volakis,et al.  Size Reduction of a Low-Profile Spiral Antenna Using Inductive and Dielectric Loading , 2008, IEEE Antennas and Wireless Propagation Letters.

[3]  W. Curtis,et al.  Spiral antennas , 1960 .

[4]  J. Yamauchi,et al.  A spiral antenna sandwiched by dielectric layers , 2004, IEEE Transactions on Antennas and Propagation.

[5]  J. Dyson.  The equiangular spiral antenna , 1959 .

[6]  V. Ungvichian,et al.  Ultra-wideband circular polarized microstrip Archimedean spiral antenna loaded with chip-resistor , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[8]  Chi-Chih Chen,et al.  Design and performance of an ultrawide-band ceramic-loaded slot spiral , 2005, IEEE Transactions on Antennas and Propagation.

[9]  Raymond J. Luebbers,et al.  Input impedance, radiation pattern, and radar cross section of spiral antennas using FDTD , 1994 .

[10]  J.J.H. Wang,et al.  Design of multioctave spiral-mode microstrip antennas , 1991 .

[11]  Junji Yamauchi,et al.  Extremely Low-Profile, Single-Arm, Wideband Spiral Antenna Radiating a Circularly Polarized Wave , 2010, IEEE Transactions on Antennas and Propagation.

[12]  C. Du,et al.  The Broadband Spiral Antenna Design Based on Hybrid Backed-Cavity , 2010 .

[13]  M. N. Afsar,et al.  A Novel Modified Archimedean Polygonal Spiral Antenna , 2013, IEEE Transactions on Antennas and Propagation.

[14]  J. Volakis,et al.  Broadband meanderline slot spiral antenna , 2002 .