Three-layered balanced circularly polarized slot antenna with high common-mode suppression

Jhe Han Wu, Chung I.G. Hsu, Ching-Her Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This article proposes the design of a three-layered balanced circularly polarized (CP) antenna using two tightly stacked conventional single-ended CP slot antennas. With a 180° delay line inserted into one of the two feeding microstrip lines that form the balanced feedline, differential-mode (DM) input signals can excite CP radiation in the broadside directions with a measured (simulated) axial ratio of as low as 1.3 (0.86) dB. Common-mode (CM) input signals can be well rejected with a measured (simulated) CM return loss of <0.4 (0.5) dB in the DM impedance band. In addition, only a very small proportion of the CM (DM) input signal is converted into a DM (CM) reflected one. These nice properties of the possibly first reported balanced CP antenna were all achieved without placing before the radiation element a CM-suppression filter.

Original languageEnglish
Pages (from-to)1585-1589
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume60
Issue number7
DOIs
Publication statusPublished - 2018 Jul 1

Fingerprint

slot antennas
Slot antennas
retarding
Antennas
Radiation
Microstrip lines
Electric delay lines
antennas
polarized radiation
delay lines
proportion
impedance
Direction compound
filters

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

@article{7143d21e91064d7f8bda0a64a37901d4,
title = "Three-layered balanced circularly polarized slot antenna with high common-mode suppression",
abstract = "This article proposes the design of a three-layered balanced circularly polarized (CP) antenna using two tightly stacked conventional single-ended CP slot antennas. With a 180° delay line inserted into one of the two feeding microstrip lines that form the balanced feedline, differential-mode (DM) input signals can excite CP radiation in the broadside directions with a measured (simulated) axial ratio of as low as 1.3 (0.86) dB. Common-mode (CM) input signals can be well rejected with a measured (simulated) CM return loss of <0.4 (0.5) dB in the DM impedance band. In addition, only a very small proportion of the CM (DM) input signal is converted into a DM (CM) reflected one. These nice properties of the possibly first reported balanced CP antenna were all achieved without placing before the radiation element a CM-suppression filter.",
author = "Wu, {Jhe Han} and Hsu, {Chung I.G.} and Ching-Her Lee",
year = "2018",
month = "7",
day = "1",
doi = "10.1002/mop.31209",
language = "English",
volume = "60",
pages = "1585--1589",
journal = "Microwave and Optical Technology Letters",
issn = "0895-2477",
publisher = "John Wiley and Sons Inc.",
number = "7",

}

Three-layered balanced circularly polarized slot antenna with high common-mode suppression. / Wu, Jhe Han; Hsu, Chung I.G.; Lee, Ching-Her.

In: Microwave and Optical Technology Letters, Vol. 60, No. 7, 01.07.2018, p. 1585-1589.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Three-layered balanced circularly polarized slot antenna with high common-mode suppression

AU - Wu, Jhe Han

AU - Hsu, Chung I.G.

AU - Lee, Ching-Her

PY - 2018/7/1

Y1 - 2018/7/1

N2 - This article proposes the design of a three-layered balanced circularly polarized (CP) antenna using two tightly stacked conventional single-ended CP slot antennas. With a 180° delay line inserted into one of the two feeding microstrip lines that form the balanced feedline, differential-mode (DM) input signals can excite CP radiation in the broadside directions with a measured (simulated) axial ratio of as low as 1.3 (0.86) dB. Common-mode (CM) input signals can be well rejected with a measured (simulated) CM return loss of <0.4 (0.5) dB in the DM impedance band. In addition, only a very small proportion of the CM (DM) input signal is converted into a DM (CM) reflected one. These nice properties of the possibly first reported balanced CP antenna were all achieved without placing before the radiation element a CM-suppression filter.

AB - This article proposes the design of a three-layered balanced circularly polarized (CP) antenna using two tightly stacked conventional single-ended CP slot antennas. With a 180° delay line inserted into one of the two feeding microstrip lines that form the balanced feedline, differential-mode (DM) input signals can excite CP radiation in the broadside directions with a measured (simulated) axial ratio of as low as 1.3 (0.86) dB. Common-mode (CM) input signals can be well rejected with a measured (simulated) CM return loss of <0.4 (0.5) dB in the DM impedance band. In addition, only a very small proportion of the CM (DM) input signal is converted into a DM (CM) reflected one. These nice properties of the possibly first reported balanced CP antenna were all achieved without placing before the radiation element a CM-suppression filter.

UR - http://www.scopus.com/inward/record.url?scp=85046551984&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046551984&partnerID=8YFLogxK

U2 - 10.1002/mop.31209

DO - 10.1002/mop.31209

M3 - Article

AN - SCOPUS:85046551984

VL - 60

SP - 1585

EP - 1589

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

SN - 0895-2477

IS - 7

ER -