A multiband monopole antenna with an embedded reactance-cancelling transmission-line matching network

Antoniades, Marco A. and Eleftheriades, George V. (2010) A multiband monopole antenna with an embedded reactance-cancelling transmission-line matching network. IEEE Antennas and Wireless Propagation Letters, 9 1107-1110. doi:10.1109/LAWP.2010.2095453


Author Antoniades, Marco A.
Eleftheriades, George V.
Title A multiband monopole antenna with an embedded reactance-cancelling transmission-line matching network
Journal name IEEE Antennas and Wireless Propagation Letters   Check publisher's open access policy
ISSN 1536-1225
1548-5757
Publication date 2010
Sub-type Article (original research)
DOI 10.1109/LAWP.2010.2095453
Volume 9
Start page 1107
End page 1110
Total pages 4
Place of publication Piscataway, NJ, United States
Publisher IEEE
Language eng
Formatted abstract
A series reactance-canceling (SERCA) transmission-line (TL) matching network is proposed, which replaces the series resonant circuit of a double-tuned Wheeler matching network with a λg/2 TL in order to achieve a broadband double-tuned matching response around the design frequency f0 while also introducing additional matching bands at harmonic frequencies of f0. The reactance cancellation property of the λg/2 TL is first outlined, followed by simple equations for the design of multiband SERCA-TL matching networks. A SERCA-TL matching network is subsequently embedded within a printed circular monopole antenna, and it is demonstrated that the lowest frequency of operation can be reduced from 4.43 GHz for the unmatched monopole to 2.1 GHz. Thus, a compact, multiband, and highly efficient antenna is achieved that operates in the frequency ranges of 2.1-4.31 and 6.35-6.78 GHz. The total size of the antenna is 20 × 50.3 × 1.59 mm3, and the measured efficiency is on the order of 80%-90% within the bands of operation.
Keyword Broadband matching network
Printed monopole antenna
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article # 5645656

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
 
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Created: Fri, 02 Dec 2011, 15:07:48 EST by Ms Deborah Brian on behalf of School of Information Technol and Elec Engineering