IET Microwaves, Antennas & Propagation
IET Microwaves, Antennas & Propagation
3 years ago

Design of miniaturised printed quadrifilar helix antenna with isoflux coverage and wide‐angle circular polarisation

Design of miniaturised printed quadrifilar helix antenna with isoflux coverage and wide‐angle circular polarisation
Hongmei Liu, Bin Luo, Jiahui Wang, Shaojun Fang, Zhongbao Wang
In the study, a miniaturised printed quadrifilar helix antenna (PQHA) with isoflux coverage and wide-angle circular polarisation is presented. It is composed of a three-stage stepped impedance spiral arm and open stubs. Each of the three-stage spiral arms has different pitches and number of turns. For the last-stage spiral arm, meander lines are used. The proposed PQHA features the characteristics of wide bandwidth, isoflux radiation, small size, and wide-angle circular polarisation. Moreover, in order to feed the proposed PQHA, a miniaturised quad-feed network is designed to provide equal amplitude signals with sequential orthogonal phases. For demonstration, a prototype is designed, fabricated, and measured. The overall size of the proposed antenna is 88 × 88 × 132 mm (0.44 λ0 × 0.44 λ0 × 0.66 λ0). The results show that isoflux radiation with a coverage of about ±60° is realised from 1.40 to 1.62 GHz (14.6%) while maintaining more than 10 dB return loss and larger than 200° 3-dB axial ratio beamwidth.

Publisher URL: https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/mia2.12188

Open URL: https://onlinelibrary.wiley.com/doi/pdfdirect/10.1049/mia2.12188

DOI: 10.1049/mia2.12188

Open access
You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.