Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression
碩士 === 逢甲大學 === 電機工程學系 === 106 === This paper focuses on new type antennas of harmonic suppression with circular polarization. The π-shape resonator can be used to suppress the high-order frequency. They can be applied to wireless local area networks WLAN 5.8 GHz (5.725 GHz to 5.825 GHz) and DSRC 5....
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ndltd-TW-106FCU004420112019-06-27T05:28:11Z http://ndltd.ncl.edu.tw/handle/u2gp8u Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression 具有寬頻諧波抑制之共平面波導饋入圓極化天線 LIN, CHIH-HENG 林志衡 碩士 逢甲大學 電機工程學系 106 This paper focuses on new type antennas of harmonic suppression with circular polarization. The π-shape resonator can be used to suppress the high-order frequency. They can be applied to wireless local area networks WLAN 5.8 GHz (5.725 GHz to 5.825 GHz) and DSRC 5.9 GHz (5.85 GHz to 5.925 GHz). A coplanar waveguide-fed circularly polarized antenna with harmonic suppression is initially proposed (proposed antenna 1). The antenna size is 30 mm× 30 mm× 0.762 mm. By adding two quadrant arc-shaped perturbed elements into the circular patch antenna, a circularly polarized (CP) band is excited from 5.85 GHz to 5.925 GHz. The π-shape resonator is loaded at the end of coplanar waveguide feed and coupled with the circularly polarized patch antenna. The measured 10-dB bandwidth and CP bandwidth were 660 MHz (5.67 GHz~6.33 GHz) and 75MHz (5.85 GHz~5.925 GHz), respectively. The measured maximum antenna gain and antenna efficiency were 5.5 dBic and 84.1%, respectively. The design of proposed antenna 2 is based on the architecture of proposed antenna 1. In order to increase the CP bandwidth without changing the structure of the resonator, a crescent slot is embedded into the ground plane. This design can increase the CP bandwidth to 5.72 GHz~5.88 GHz, which can cover the WLAN 5.8 GHz band (5.72 GHz~5.85 GHz). The measured 10-dB bandwidth was 850 MHz (5.7 GHz~6.55 GHz). The measured maximum antenna gain and antenna efficiency were 3.9 dBic and 81%, respectively. SIM, CHOW-YEN HUANG, TING-YI 沈昭元 黃定彝 2018 學位論文 ; thesis 74 zh-TW |
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碩士 === 逢甲大學 === 電機工程學系 === 106 === This paper focuses on new type antennas of harmonic suppression with circular polarization. The π-shape resonator can be used to suppress the high-order frequency. They can be applied to wireless local area networks WLAN 5.8 GHz (5.725 GHz to 5.825 GHz) and DSRC 5.9 GHz (5.85 GHz to 5.925 GHz).
A coplanar waveguide-fed circularly polarized antenna with harmonic suppression is initially proposed (proposed antenna 1). The antenna size is 30 mm× 30 mm× 0.762 mm. By adding two quadrant arc-shaped perturbed elements into the circular patch antenna, a circularly polarized (CP) band is excited from 5.85 GHz to 5.925 GHz. The π-shape resonator is loaded at the end of coplanar waveguide feed and coupled with the circularly polarized patch antenna. The measured 10-dB bandwidth and CP bandwidth were 660 MHz (5.67 GHz~6.33 GHz) and 75MHz (5.85 GHz~5.925 GHz), respectively. The measured maximum antenna gain and antenna efficiency were 5.5 dBic and 84.1%, respectively.
The design of proposed antenna 2 is based on the architecture of proposed antenna 1. In order to increase the CP bandwidth without changing the structure of the resonator, a crescent slot is embedded into the ground plane. This design can increase the CP bandwidth to 5.72 GHz~5.88 GHz, which can cover the WLAN 5.8 GHz band (5.72 GHz~5.85 GHz). The measured 10-dB bandwidth was 850 MHz (5.7 GHz~6.55 GHz). The measured maximum antenna gain and antenna efficiency were 3.9 dBic and 81%, respectively.
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author2 |
SIM, CHOW-YEN |
author_facet |
SIM, CHOW-YEN LIN, CHIH-HENG 林志衡 |
author |
LIN, CHIH-HENG 林志衡 |
spellingShingle |
LIN, CHIH-HENG 林志衡 Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression |
author_sort |
LIN, CHIH-HENG |
title |
Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression |
title_short |
Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression |
title_full |
Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression |
title_fullStr |
Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression |
title_full_unstemmed |
Coplanar Waveguide-fed Circularly Polarized Antennas with Wideband Harmonic Suppression |
title_sort |
coplanar waveguide-fed circularly polarized antennas with wideband harmonic suppression |
publishDate |
2018 |
url |
http://ndltd.ncl.edu.tw/handle/u2gp8u |
work_keys_str_mv |
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