Internal Antenna Design for a Triple Band Using an Overlap of Return Loss

2007 ◽  
Vol 21 (8) ◽  
pp. 1099-1108 ◽  
Author(s):  
B. C. Jang ◽  
C. Y. Kim
Keyword(s):  
Return Loss ◽  
Antenna Design ◽  
Internal Antenna ◽  
Triple Band

scholarly journals Inverted F Type Antenna Design for the Cattle Activity and Estrus Detection Sensor Module

2020 ◽  
Vol 11 (1) ◽  
pp. 298
Author(s):  
Youchung Chung
Keyword(s):  
Radio Frequency ◽  
Return Loss ◽  
Antenna Design ◽  
Sensor Module ◽  
Estrus Detection ◽  
Communication Module ◽  
Frequency Module ◽  
Rf Transmission ◽  
Main Station

In this paper, an inverted F type antenna (IFA) for ZigBee communication of a sensor board has been designed and optimized, and it replaces the chip antenna on an RF (Radio Frequency) module that is not performing well enough for the ZigBee communication. The sensor board detects cattle behavior and identifies the breeding (estrus) period and transmits the data to the main station by the RF (Radio Frequency) module and IFA antenna. The proposed and optimized TRx (transmitting/receiving) IFA antenna of the ZigBee communication module has a return loss of −19 dB and a gain of 1.6 dB at 2.45 GHz. The size is about 2.5 × 0.5 cm in width and vertical length, and the height is 0.55 cm. The strength of signals with the chip antenna and the IFA antenna have been measured and compared. There is about a 20 dB enhancement with the IFA antenna compared to the chip antenna. The antenna is designed and applied to the RF transmission and reception (TRx) module. This antenna and sensor module can be applied to livestock in general as well as cattle.

Comb Shaped Triple Band Microstrip Antenna for Wireless Communication

2021 ◽  
Vol 9 (4) ◽  
pp. 379-382
Keyword(s):  
Dielectric Constant ◽  
Wireless Communication ◽  
High Frequency ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Experimental Results ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Triple Band

A comb shaped microstrip antenna is designed by loading rectangular slots on the patch of the antenna. The antenna resonating at three different frequencies f1 = 5.35 GHz, f2 = 6.19 GHz and f3= 8.15 GHz. The designed antenna is simulated on High Frequency Structure Simulator software [HFSS] and the antenna is fabricated using substrate glass epoxy with dielectric constant 4.4 having dimension of 8x4x0.16 cms. The antenna shows good return loss, bandwidth and VSWR. Experimental results are observed using Vector Analyzer MS2037C/2.

scholarly journals Bandwidth Enhancement of Tri-band Rectangular Dielectric Resonator Antenna using Novel Offset Feed for WLAN/WIMAX Applications

2020 ◽  
Vol 9 (5) ◽  
pp. 2305-2308
Keyword(s):  
Dielectric Resonator ◽  
Microstrip Line ◽  
Return Loss ◽  
Radiation Efficiency ◽  
Antenna Design ◽  
Design Parameters ◽  
Dielectric Resonator Antenna ◽  
Bandwidth Enhancement ◽  
Frequency Bands ◽  
Rectangular Dielectric Resonator Antenna

In this article, a novel offset microstrip line feed Rectangular Dielectric Resonator Antenna is used for bandwidth enhancement. The parameters such as Bandwidth, Return Loss and Radiation efficiency are improved in the proposed antenna. A comparison is also shown for the proposed feed structure with and without conformal strips. The improvement in the bandwidth is observed from 25% to 65% by optimizing the antenna design parameters. It works in three frequency bands, that is, 2.03-3.69 GHz, 3.86-7.26 GHz, and 7.32-9.26 GHz. The proposed antenna is appropriate for WIMAX/WLAN applications.

scholarly journals Asymmetric-Slit Method on WiFi Antenna with 2.4 GHz and 5 GHz Frequency

2020 ◽  
Vol 4 (2) ◽  
pp. 53
Author(s):  
Petrus Kerowe Goran ◽  
Eka Setia Nugraha
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Antenna Design ◽  
The Internet ◽  
Information Searching ◽  
Simple Method ◽  
A Value ◽  
Simulation Results ◽  
5 Ghz ◽  
Antenna Model

Wireless Fidelity (WiFi) devices are often used to access the internet network, both for working and in information searching. Accessing the internet can be administered anywhere provided that the area is within the WiFi devices range. A WiFi device uses 2.4 GHz and 5 GHz operating frequencies. There were several methods employed in the previous studies so that an antenna design could work in two different frequencies, i.e., winding bowtie method, Sierpinski method, and double-circular method. This paper employed a simple method, the slit method. The objective of this paper is to discover a simple antenna model that works on 2.4 GHz and 5 GHz frequencies. This paper employed a square patch microstrip antenna with a slit method. The dimensions of the designed square patch microstrip antenna were 42.03 mm × 27.13 mm × 0.035 mm. The antenna worked at 2.4 GHz and 5 GHz frequencies. The obtained simulation results after the optimization showed that the square patch microstrip antenna using the slit method acquired a value of S11 (return loss) of -10.15 dB at a frequency of 2.4 GHz and -37.315 dB at a frequency of 5 GHz.

Development of Novel Design to Enhance the Characteristics of Flexible Antenna

2020 ◽  
pp. 49-56
Author(s):  
Neha Nigam ◽  
Vinod Kumar Singh
Keyword(s):  
Return Loss ◽  
Data Transfer ◽  
Radiation Characteristics ◽  
Textile Antenna ◽  
Flexible Antenna ◽  
Novel Design ◽  
Triple Band

This chapter proposed triple band novel geometry and enhanced characteristics of flexible textile antenna. The proposed radio wire indicates wideband execution with wide data transfer capacity of 20.50% covering the recurrence scope of 6.3039 GHz to 7.7445 GHz, 11.57% covering the recurrence scope of 9.0694 GHz to 10.184 GHz, and 8.23% in the recurrence scope of 12.497 GHz to 13.57 GHz. In this chapter, reenacted outcomes like return loss, directivity, and radiation characteristics have been contemplated.

scholarly journals Design of Circularly Polarized Triple-Band Wearable Textile Antenna with Safe Low SAR for Human Health

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1366 ◽  
Author(s):  
Ashok Yadav ◽  
Vinod Kumar Singh ◽  
Pranay Yadav ◽  
Amit Kumar Beliya ◽  
Akash Kumar Bhoi ◽  
...  
Keyword(s):  
Microstrip Line ◽  
Radiation Effect ◽  
Axial Ratio ◽  
Antenna Design ◽  
Circularly Polarized ◽  
Frequency Bands ◽  
Textile Antenna ◽  
Peak Gain ◽  
Triple Band ◽  
Ku Band

In this manuscript, an antenna on textile (jeans) substrate is presented for the WLAN, C band and X/Ku band. This is a wearable textile antenna, which was formed on jeans fabric substrate to reduce surface-wave losses. The proposed antenna design consists of a patch and a defected ground. To energize the wearable textile antenna, a microstrip line feed technique is used in the design. The impedance band width of 23.37% (3.4–4.3 GHz), 56.48% (4.7–8.4 GHz) and 31.14% (10.3–14.1 GHz) frequency bands are observed, respectively. The axial ratio bandwidth (ARBW) of 10.10% (4.7–5.2 GHz), 4.95% (5.9–6.2 GHz) and 10.44% (11.8–13.1 GHz) frequency bands are observed, respectively. A peak gain of 4.85 dBi is analyzed at 4.1-GHz frequency during the measurement. The SAR value was calculated to observe the radiation effect and it was found that its utmost SAR value is 1.8418 W/kg and 1.919 W/kg at 5.2/5.5-GHz frequencies, which is less than 2 W/kg of 10 gm tissue. The parametric study is performed for the validation of the proper functioning of the antenna.

Embroidery Leaf Shape Dipole Antenna Performances and Characterisation

2017 ◽  
Vol 7 (3) ◽  
pp. 1467
Author(s):  
N. J. Ramly ◽  
M. K. A. Rahim ◽  
N. A. Samsuri ◽  
H. A. Majid
Keyword(s):  
Return Loss ◽  
Leaf Shape ◽  
Dipole Antenna ◽  
Antenna Design ◽  
Operating Frequency ◽  
Ism Band ◽  
Textile Antenna ◽  
Different Types

In this paper, leaf shape textile antenna in ISM band has been chosen to study. The operating frequency of the dipole antenna is 2.45GHz. The effect of conductive threads with three different types of sewing has been analysed. The first type of sewing leaf shape dipole antenna is to stitch around itself and embroidered into a fleece fabric with circular follow by vertical and horizontal stitch respectively. From measured return loss, the antenna with circular stitch shows better performances with optimum resonances compared with the two types of stitching. The measured results confirm that the circular stitch is more suitable for leaf shape dipole antenna design. Thus it can be concluded that different stitch gives different results for leaf shape dipole antenna.

Design of a novel triple-band monopole antenna for WLAN/WiMAX MIMO applications in the laptop computer

Circuit World ◽  
2019 ◽  
Vol 45 (4) ◽  
pp. 257-267 ◽  
Author(s):  
Jayshri Sharad Kulkarni ◽  
Raju Seenivasan
Keyword(s):  
Antenna Array ◽  
Cost Effective ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Laptop Computer ◽  
Content Type ◽  
Laptop Computers ◽  
Triple Band

Purpose This paper aims to present a triple-band monopole antenna design of 0.2-mm thickness with an overall dimension of 21 × 8 mm2 for wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) multiple input and multiple output (MIMO) applications in the laptop computer. Design/methodology/approach It comprises three monopole radiating elements, namely, strip AD (inverted C), strip EG (inverted J) and strip FI (inverted U) along with two rectangular open-end tuning stubs, namely, “m” and “n” of size 1.5 × 0.9 mm2 and 1.8 × 0.9 mm2, respectively. The proposed structure is compact, cost-effective and easy to integrate inside the laptop computers. Findings This structure excites three WLAN (2.4/5.2/5.8 GHz) and three WiMAX (2.3/3.3/5.5 GHz) bands. The proposed antenna array elucidates that it has measured −10dB impedance bandwidth of 11.86 per cent (2.22-2.50) GHz in a lower band (f_l), 6.83 per cent (3.25-3.48) GHz in medium band (f_m) and 16.84 per cent (5.00-5.92) GHz in upper band (f_u). The measured gain and radiation efficiency are above 3.64dBi and 75 per cent, respectively, and isolation better than −20dB. The envelope correlation coefficient (ECC) is less than 0.004. The simulated and measured results are in good concurrence, which confirms the applicability of the proposed antenna array for MIMO applications in the laptop computer. Originality/value The proposed antenna is designed without using vias, reactive elements and matching circuits for excitation of WLAN/WiMAX bands in the laptop computers. The design also does not require any additional ground for mounting the antenna. Further, the antenna array, formed by using the same antenna design, does not need additional isolating elements and is designed in such a way that the system ground itself acts as an isolating element. The proposed antenna has a low profile and is ultra-thin, cost-effective and easy to manufacture and can be easily embedded inside the next-generation laptop computers.

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