Abstract
In this paper, a novel design of compact microstrip antenna (MA) using an embeddedλ/4 resonator is presented. By utilizing the strong coupling between theλ/4 resonator and the radiation patch of MA, the resonant frequency of MA can be decreased. Besides, theλ/4 resonator is embedded in the patch, which does not enlarge the whole size of MA. Therefore, a compact antenna can be realized. In this paper, after the principle is stated, a sample antenna has been manufactured and measured to prove the predicted characteristics of our proposed antenna. The measurement agrees well with the simulation. Hence, the proposed method in this paper is quite suitable for the design of a compact antenna.
Highlights
As the key component of a wireless communication system, transmission and reception of radio waves are accomplished by the antenna
The equivalent circuit has been deduced. It can be seen from formula (5) that when the size of the radiation patch of microstrip antennas (MA) and the λ/4 resonator is determined, the input admittance is related to J12
The resonant frequency of MA can be decreased by enhancing the coupling between the resonator and the antenna, which can realize a compact MA
Summary
As the key component of a wireless communication system, transmission and reception of radio waves are accomplished by the antenna. Because of the peculiarity of lightweight, low profile, and easy integration with systems, microstrip antennas (MA) are widely applied in modern wireless terminals [2]. In [15], a substrate having high permittivity or permeability is used to decrease the resonant frequency of the antenna. E short-circuit pin close to feeding point introduces a coupling capacitor into the resonant cavity, which realizes the miniaturization of the antenna. Such compact MAs tend to have a narrower bandwidth, and the cross polarization level on H-plane becomes worse. As the λ/4 resonator is embedded in the microstrip patch, the antenna size is not enlarged. The proposed compact antenna is manufactured and measured. e measured results are in good agreement with the predicted consequences, which prove our design method
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
