http://iet.metastore.ingenta.com
1887

Polarisation properties of small printed spiral antennas with four resistively loaded arms

Polarisation properties of small printed spiral antennas with four resistively loaded arms

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IEE Proceedings - Microwaves, Antennas and Propagation — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

A small printed four-arm spiral antenna with lumped resistive loading is investigated to assess its suitability as a compact antenna element with pure circular polarisation. The results of numerical investigations based on a simplified thin-wire model are presented, which indicate XPD improvements of ≥ 14 dB in comparison to conventional spirals of the same size. The corresponding gain reductions are ~1 – 3 dB, which is at least equivalent to the performance of conventional cavity backed spirals. Furthermore, experimental results are discussed for a true microstrip spiral, which verify XPD improvements of 12 – 17 dB and show that XPD figures of 30 dB as well as a radiation pattern with acceptable symmetry can be obtained, even with simple nonoptimised feed networks. Areas for further improvements are identified and briefly discussed.

References

    1. 1)
      • H. Nakano , J. Yamauchi . Characteristics of modified spiral and helical antennas. IEE Proc. H , 5 , 232 - 237
    2. 2)
      • U.R. Kraft . Polarization properties of spiral antennas - a tutorial. Electromagnetics , 259 - 284
    3. 3)
      • J.J.H. Wang , V.K. Tripp . Design of multioctave spiral-mode microstripantennas. IEEE Trans. Antennas Propag. , 3 , 332 - 335
    4. 4)
      • H. Nakano , K. Nogami , S. Arai , H. Mimaki , J. Yamauchi . A spiral antenna backed by a conducting plane reflector. IEEE Trans. Antennas Propag. , 6 , 791 - 796
    5. 5)
      • H. Nakano , H. Soga , T. Honma , J. Yamauchi . Effects of adding a smalldisk to a spiral antenna backed by a conducting plane reflector. IEE Proc. H , 4 , 375 - 377
    6. 6)
      • U.R. Kraft . Optimisation of circular polarisation performance for 4-armplanar spiral antennas with nonperfect excitation networks. IEE Proc. H , 1 , 45 - 50
    7. 7)
      • N.J. Champagne , J.T. Williams , D.R. Wilton . Analysis of resistively loaded, printed spiral antennas. Electromagnetics , 363 - 395
http://iet.metastore.ingenta.com/content/journals/10.1049/ip-map_19971018
Loading

Related content

content/journals/10.1049/ip-map_19971018
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address