TY - JOUR
T1 - Co-Synthesis of A Filtering Antenna With Harmonic Suppression
AU - Zhang, Yiming
AU - Zhang, Shuai
AU - Ye, Qi-Cheng
AU - Pedersen, Gert Frølund
PY - 2020/10
Y1 - 2020/10
N2 - To suppress the undesired signals at the front-ends of wireless systems, a co-design of a simple filtering antenna highly integrated with a slotline-based network is presented and studied in this letter. The proposed antenna integrated with the low-pass filter, the bandpass response is achieved and impedance bandwidth is also enlarged due to the additional reflection pole contributed by the high integration, which has been evaluated and verified through numerical calculations and full-wave simulations. A design example of the filtering antenna working at 3.5 GHz is developed and fabricated for demonstration purposes. Measured results indicate that good filtering responses with a low insertion loss are achieved. Compared to the original patch antenna, the fractional impedance bandwidth of the proposed one is significantly enhanced, from 6.63% to 13.7%. Besides, harmonics of up to 15.5 GHz are well suppressed. The proposed scheme is simple and compact, exhibiting attractive performance for bandwidth enhancement, and spurious suppression applications.
AB - To suppress the undesired signals at the front-ends of wireless systems, a co-design of a simple filtering antenna highly integrated with a slotline-based network is presented and studied in this letter. The proposed antenna integrated with the low-pass filter, the bandpass response is achieved and impedance bandwidth is also enlarged due to the additional reflection pole contributed by the high integration, which has been evaluated and verified through numerical calculations and full-wave simulations. A design example of the filtering antenna working at 3.5 GHz is developed and fabricated for demonstration purposes. Measured results indicate that good filtering responses with a low insertion loss are achieved. Compared to the original patch antenna, the fractional impedance bandwidth of the proposed one is significantly enhanced, from 6.63% to 13.7%. Besides, harmonics of up to 15.5 GHz are well suppressed. The proposed scheme is simple and compact, exhibiting attractive performance for bandwidth enhancement, and spurious suppression applications.
KW - Bandpass
KW - harmonic suppression
KW - slotline
UR - http://www.scopus.com/inward/record.url?scp=85092459655&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2020.3015538
DO - 10.1109/LAWP.2020.3015538
M3 - Journal article
SN - 1536-1225
VL - 19
SP - 1729
EP - 1733
JO - I E E E Antennas and Wireless Propagation Letters
JF - I E E E Antennas and Wireless Propagation Letters
IS - 10
M1 - 9165053
ER -