Abstract
In this article, a novel wideband cylindrical conformal antenna using a wide slot in the ground plane is proposed. A bow-tie-shaped patch antenna is designed for Global Positioning System applications. The bandwidth of the antenna is improved by using a similar bow-tie-shaped slot in the ground plane with a larger dimension. The bandwidth is further enhanced by introducing a dumbbell-shaped slit in the patch. The antenna is fed by a 50- Ω role=presentation> Ω Ω \Omega microstrip line. The proposed planar antenna is printed on a ground plane of size 0.5 λ role=presentation> λ λ \lambda mm × role=presentation> × × \times 0.5 λ role=presentation> λ λ \lambda mm, where λ role=presentation> λ λ \lambda is the operating wavelength, and then it is transformed into a cylindrical conformal antenna with the desired radius of curvature. The proposed planar antenna is simulated, fabricated, and measured for conformal geometry with good agreement between measurements and simulation results. It is observed that the conformal antenna exhibits a fractional bandwidth of 81.4 % role=presentation> % % \% operating from 0.75 to 1.78 GHz, which is useful for all GPS and Galileo frequencies. The radiation pattern exhibits an omnidirectional pattern and gain of the proposed antenna is 3.5 to 4.78 dBi within the operating frequency range.
Highlights
Microstrip antennas are broadly utilized as a part of wireless communication systems since they have numerous points of interest such as easy fabrication, low profile, easy integration with devices, light weight, stable radiation patterns, and low cost [1,2,3,4,5,6,7]
A capacitively probe-fed structure was implemented in the microstrip antenna design to enhance bandwidth up to 35 % by using hard foam material, which can be considered as a shortcoming [11]
A new printed bow-tie patch cylindrical conformal antenna excited by a microstrip line for wideband GPS is introduced
Summary
Microstrip antennas are broadly utilized as a part of wireless communication systems since they have numerous points of interest such as easy fabrication, low profile, easy integration with devices, light weight, stable radiation patterns, and low cost [1,2,3,4,5,6,7]. Various resonators and thick substrates with low dielectric constant have been utilized to design patch antennas on a planar surface for obtaining bandwidth up to 20 % to 32.3 % [15, 16]. The radiation attributes of the bow-tie microstrip printed antenna were reported in [32] The bandwidth of this antenna relies on the flare angle, and this is utilized in wideband applications. A new printed bow-tie patch cylindrical conformal antenna excited by a microstrip line for wideband GPS is introduced. The antenna used in the proposed work utilizes a microstrip line feed with characteristic impedance of 50 Ω to excite the bow-tie patch. The 10-dB impedance bandwidth of the bow-tie antenna can be enhanced by applying a slot in the ground
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
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 call
