TY - GEN
T1 - Side Lobe Level Suppression of THz Bowtie Antenna on Hemispherical Dielectric Lens
AU - Apriono, Catur
AU - Ulfah, Farida
AU - Rahardjo, Eko Tjipto
N1 - Funding Information:
ACKNOWLEDGMENT Universitas Indonesia supports this research through PIT9 Grant, the fiscal year 2019, contract number: NKB-0054/UN2.R3.1/HKP.05.00/2019.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/8/4
Y1 - 2019/8/4
N2 - Imaging quality depends on radiation performance of a transmitter and receiver, including beam width and side lobe levels. For imaging systems, side lobes of radiation sources should be minimum for optimum scanning and array configurations. A high sidelobe level can potentially disturb proper power detection in receivers affected by some radiation power emitted from side lobe radiation of an unexpected source. In this paper, we study a technique of side lobe level suppression in a THz bowtie antenna design on an extended hemispherical dielectric lens. Two methods are applied and reviewed in this research to reduce sidelobe level, i.e., antenna cross design to provide quasi-isotropic radiation pattern and optimum matching layers to collimate radiated waves from the substrate to free space. CST Microwave studio is used to simulate the model. The optimum side lobe level obtained from five optimum matching layers can be at-12.1 dB and-11.9 dB for E-plane and H-plane, respectively. This research is expected to contribute to THz imaging systems for enhancing image quality.
AB - Imaging quality depends on radiation performance of a transmitter and receiver, including beam width and side lobe levels. For imaging systems, side lobes of radiation sources should be minimum for optimum scanning and array configurations. A high sidelobe level can potentially disturb proper power detection in receivers affected by some radiation power emitted from side lobe radiation of an unexpected source. In this paper, we study a technique of side lobe level suppression in a THz bowtie antenna design on an extended hemispherical dielectric lens. Two methods are applied and reviewed in this research to reduce sidelobe level, i.e., antenna cross design to provide quasi-isotropic radiation pattern and optimum matching layers to collimate radiated waves from the substrate to free space. CST Microwave studio is used to simulate the model. The optimum side lobe level obtained from five optimum matching layers can be at-12.1 dB and-11.9 dB for E-plane and H-plane, respectively. This research is expected to contribute to THz imaging systems for enhancing image quality.
KW - bowtie
KW - side lobe level
KW - Terahertz
UR - http://www.scopus.com/inward/record.url?scp=85114196727&partnerID=8YFLogxK
U2 - 10.1109/APCAP47827.2019.9471915
DO - 10.1109/APCAP47827.2019.9471915
M3 - Conference contribution
AN - SCOPUS:85114196727
T3 - 2019 8th Asia-Pacific Conference on Antennas and Propagation, APCAP 2019
SP - 452
EP - 453
BT - 2019 8th Asia-Pacific Conference on Antennas and Propagation, APCAP 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th Asia-Pacific Conference on Antennas and Propagation, APCAP 2019
Y2 - 4 August 2019 through 7 August 2019
ER -