A Low-Profile Bull’s-eye Antennas for Dual-Band Applications

Author(s):  
Mohammad Mahdi Honari ◽  
Kamal Sarabandi ◽  
Pedram Mousavi
Keyword(s):  
2019 ◽  
Vol 12 (2) ◽  
pp. 95-100
Author(s):  
Purnima Sharma ◽  
Akshi Kotecha ◽  
Rama Choudhary ◽  
Partha Pratim Bhattacharya

Background: The Planar Inverted-F Antenna (PIFA) is most widely used for wireless communication applications due to its unique properties as low Specific Absorption Rate, low profile geometry and easy fabrication. In literature a number of multiband PIFA designs are available that support various wireless applications in mobile communication, satellite communication and radio frequency field. Methods: In this paper, a miniature sized planar inverted-F antenna has been proposed for dual-band operation. The antenna consists of an asymmetrical pentagonal shaped patch over an FR4 substrate. The overall antenna dimension is 10 × 10 × 3 mm3 and resonates at 5.7 GHz frequency. A modification is done in the patch structure by introducing an asymmetrical pentagon slot. Results: The proposed pentagonal antenna resonates at 5.7 GHz frequency. Further, modified antenna resonates at two bands. The lower band resonates at 5 GHz and having a bandwidth of 1.5 GHz. This band corresponds to C-band, which is suitable for satellite communication. The upper band is at 7.9 GHz with a bandwidth of 500 MHz. Performance parameters such as return loss, VSWR, input impedance and radiation pattern are obtained and analysed using ANSYS High- Frequency Structure Simulator. The radiation patterns obtained are directional, which are suitable for mobile communication. Conclusion: The antenna is compact in size and suitable for radar, satellite and vehicular communication.


2013 ◽  
Vol 61 (4) ◽  
pp. 2282-2285 ◽  
Author(s):  
Zhen Guo Liu ◽  
Yong Xin Guo
Keyword(s):  

Author(s):  
Xiaoxue Tan ◽  
Juan Chen ◽  
Jianxing Li

Abstract In this paper, an optically transparent structure that combines broadband absorption and low infrared emissivity for dual-band stealth is proposed. The whole structure includes two functional layers. The periodic resistive film of the upper functional layer acts on infrared stealth. Its emissivity in the infrared band of 8-14μm is lower than 0.3. Another functional layer achieves greater than 90% wide absorption from 6 to 18.5 GHz. The whole optically transparent composite structure has a low profile of 0.141λ0, where λ0 is the wavelength of free space at the center frequency. It has an absorptivity that greater than 90% in the region of 5.7-16.5 GHz and has wide angular stability. Measured result is consistent with the simulation which verify the performance of the proposal. The infrared-radar compatible stealth structure proposed in this paper has potential application in the field of multi-spectrum compatible stealth.


2018 ◽  
Vol 17 (2) ◽  
pp. 259-262 ◽  
Author(s):  
Jiajia Guo ◽  
Shaoqiu Xiao ◽  
Shaowei Liao ◽  
Bingzhong Wang ◽  
Quan Xue

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 69575-69581 ◽  
Author(s):  
Shuai Gao ◽  
Lei Ge ◽  
Dengguo Zhang ◽  
Wei Qin
Keyword(s):  

Electronics ◽  
2021 ◽  
Vol 10 (21) ◽  
pp. 2715
Author(s):  
Ming-An Chung ◽  
Chih-Wei Yang

The article mainly presents that a simple antenna structure with only two branches can provide the characteristics of dual-band and wide bandwidths. The recommended antenna design is composed of a clockwise spiral shape, and the design has a gradual impedance change. Thus, this antenna is ideal for applications also recommended in these wireless standards, including 5G, B5G, 4G, V2X, ISM band of WLAN, Bluetooth, WiFI 6 band, WiMAX, and Sirius/XM Radio for in-vehicle infotainment systems. The proposed antenna with a dimension of 10 × 5 mm is simple and easy to make and has a lot of copy production. The operating frequency is covered with a dual-band from 2000 to 2742 MHz and from 4062 to beyond 8000 MHz and, it is also demonstrated that the measured performance results of return loss, radiation, and gain are in good agreement with simulations. The radiation efficiency can reach 91% and 93% at the lower and higher bands. Moreover, the antenna gain can achieve 2.7 and 6.75 dBi at the lower and higher bands, respectively. This antenna design has a low profile, low cost, and small size features that may be implemented in autonomous vehicles and mobile IoT communication system devices.


IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Sandhiya Reddy Govindarajulu ◽  
Rimon Hokayem ◽  
Md Nurul Anwar Tarek ◽  
Marisol Roman Guerra ◽  
Elias A. Alwan

Sign in / Sign up

Export Citation Format

Share Document