Compact Ring Slot Antenna With Harmonic Suppression

Harmonic suppression antennas are widely used in the microwave power transmission and active antenna systems. In this letter, a square ring slot loaded with two side slots is constructed as the radiating element. Meanwhile, a bottom transverse slot orthogonal to the microstrip feedline is introduced...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2018-12, Vol.17 (12), p.2459-2463
Main Authors: Li, Weiwen, Wang, Yu, You, Baiqiang, Shi, Zhiyuan, Liu, Qing Huo
Format: Article
Language:English
Subjects:
Active antenna
Harmonic analysis
harmonic suppression
Harmonics
Harmonics suppression
Microstrip
Microwave antennas
Power harmonic filters
printed slot antenna
rectifier antenna
Resonant frequencies
Slot antennas
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Summary:Harmonic suppression antennas are widely used in the microwave power transmission and active antenna systems. In this letter, a square ring slot loaded with two side slots is constructed as the radiating element. Meanwhile, a bottom transverse slot orthogonal to the microstrip feedline is introduced as the harmonic suppression unit. In fact, the part of microstrip feedline that extends into the slot ring also has an inhibitory effect on the harmonics. In this way, a compact slot antenna with harmonic suppression is constructed. For the proposed antenna, the fundamental frequency and harmonic rejection can also be adjusted independently, so the antenna structure is easy to implement. The experimental results of the prototype antenna show that the designed antenna achieves good suppression for the second- and third-order harmonics.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2018.2877974