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- Title
Compact helical antenna with small ground fed by spiral-shaped microstrip line.
- Authors
Longsheng Liu; Yue Li; Zhijun Zhang; Zhenghe Feng
- Abstract
A compact helical antenna with a small ground is proposed for 5.2/5.8 GHz WLAN applications. The proposed antenna can be easily mounted in the space-limited systems. Good impedance matching is achieved by a spiral-shaped microstrip line feed structure. Relatively uniform current along the helix is observed owing to the travelling-wave current on the feed structure, which contributes to high-gain performance even with a small ground. The measured 3 dB axial ratio bandwidth and impedance bandwidth for S11 ⩽ -10 dB overlap over 5-6 GHz, whereas the realised gain of about 13-14 dBic is achieved over the 5.2/5.8 GHz WLAN band.
- Subjects
SPIRAL antennas; MICROSTRIP antennas; WIRELESS LANs; BANDWIDTH allocation; AXIAL flow
- Publication
Electronics Letters (Wiley-Blackwell), 2014, Vol 50, Issue 5, p1
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2013.4021