Design of balanced CPW-Fed L-shaped CP antenna

Wen Jie Chen, Wen Xuan Chen, Ching-Her Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, a balanced CPW-fed circularly polarized (CP) antenna is proposed. The antenna consists of two L-shaped monopole radiating elements which are deployed perpendicular to each other to excite orthogonal radiation fields. A 90° delay line section is embedded in one of the differential feedlines to provide 90° phase difference between signals fed to the two input ports. The combination of the above designs were verified to give good CP radiation field patterns. In addition, to suppress the common-mode signals, a half-wavelength CPW line section is connected between the two feedlines for producing a transmission zero in the DM passband under CM operation. For the designed balanced CP antenna, Measurement shows that the S11 dd ≤-10dB DM operating band covers a frequency range of 2.04-2.87 GHz. Very good CM suppression was observed with the measured CM reflection coefficient greater than-3 dB for 2.1-2.86 GHz. The simulated 3-dB axial ratio band is 2.38-2.54 GHz.

Original languageEnglish
Title of host publication2017 International Symposium on Antennas and Propagation, ISAP 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-2
Number of pages2
ISBN (Electronic)9781538604656
DOIs
Publication statusPublished - 2017 Dec 19
Event2017 International Symposium on Antennas and Propagation, ISAP 2017 - Phuket, Thailand
Duration: 2017 Oct 302017 Nov 2

Publication series

Name2017 International Symposium on Antennas and Propagation, ISAP 2017
Volume2017-January

Other

Other2017 International Symposium on Antennas and Propagation, ISAP 2017
CountryThailand
CityPhuket
Period17-10-3017-11-02

Fingerprint

Antenna feeders
antennas
Antennas
radiation distribution
Radiation
polarized radiation
Electric delay lines
delay lines
monopoles
frequency ranges
retarding
reflectance
Wavelength
wavelengths

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Instrumentation

Cite this

Chen, W. J., Chen, W. X., & Lee, C-H. (2017). Design of balanced CPW-Fed L-shaped CP antenna. In 2017 International Symposium on Antennas and Propagation, ISAP 2017 (pp. 1-2). (2017 International Symposium on Antennas and Propagation, ISAP 2017; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISANP.2017.8228972
Chen, Wen Jie ; Chen, Wen Xuan ; Lee, Ching-Her. / Design of balanced CPW-Fed L-shaped CP antenna. 2017 International Symposium on Antennas and Propagation, ISAP 2017. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 1-2 (2017 International Symposium on Antennas and Propagation, ISAP 2017).
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abstract = "In this paper, a balanced CPW-fed circularly polarized (CP) antenna is proposed. The antenna consists of two L-shaped monopole radiating elements which are deployed perpendicular to each other to excite orthogonal radiation fields. A 90° delay line section is embedded in one of the differential feedlines to provide 90° phase difference between signals fed to the two input ports. The combination of the above designs were verified to give good CP radiation field patterns. In addition, to suppress the common-mode signals, a half-wavelength CPW line section is connected between the two feedlines for producing a transmission zero in the DM passband under CM operation. For the designed balanced CP antenna, Measurement shows that the S11 dd ≤-10dB DM operating band covers a frequency range of 2.04-2.87 GHz. Very good CM suppression was observed with the measured CM reflection coefficient greater than-3 dB for 2.1-2.86 GHz. The simulated 3-dB axial ratio band is 2.38-2.54 GHz.",
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Chen, WJ, Chen, WX & Lee, C-H 2017, Design of balanced CPW-Fed L-shaped CP antenna. in 2017 International Symposium on Antennas and Propagation, ISAP 2017. 2017 International Symposium on Antennas and Propagation, ISAP 2017, vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 1-2, 2017 International Symposium on Antennas and Propagation, ISAP 2017, Phuket, Thailand, 17-10-30. https://doi.org/10.1109/ISANP.2017.8228972

Design of balanced CPW-Fed L-shaped CP antenna. / Chen, Wen Jie; Chen, Wen Xuan; Lee, Ching-Her.

2017 International Symposium on Antennas and Propagation, ISAP 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 1-2 (2017 International Symposium on Antennas and Propagation, ISAP 2017; Vol. 2017-January).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - In this paper, a balanced CPW-fed circularly polarized (CP) antenna is proposed. The antenna consists of two L-shaped monopole radiating elements which are deployed perpendicular to each other to excite orthogonal radiation fields. A 90° delay line section is embedded in one of the differential feedlines to provide 90° phase difference between signals fed to the two input ports. The combination of the above designs were verified to give good CP radiation field patterns. In addition, to suppress the common-mode signals, a half-wavelength CPW line section is connected between the two feedlines for producing a transmission zero in the DM passband under CM operation. For the designed balanced CP antenna, Measurement shows that the S11 dd ≤-10dB DM operating band covers a frequency range of 2.04-2.87 GHz. Very good CM suppression was observed with the measured CM reflection coefficient greater than-3 dB for 2.1-2.86 GHz. The simulated 3-dB axial ratio band is 2.38-2.54 GHz.

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Chen WJ, Chen WX, Lee C-H. Design of balanced CPW-Fed L-shaped CP antenna. In 2017 International Symposium on Antennas and Propagation, ISAP 2017. Institute of Electrical and Electronics Engineers Inc. 2017. p. 1-2. (2017 International Symposium on Antennas and Propagation, ISAP 2017). https://doi.org/10.1109/ISANP.2017.8228972