scholarly journals Design and analysis of defected ground structure transformer for dual-band antenna

2014 ◽  
Vol 2014 (11) ◽  
pp. 612-617 ◽  
Author(s):  
Wai-Wa Choi ◽  
Ka Fai Chang ◽  
Chon Chio Leong ◽  
Pedro Cheong ◽  
Kam Weng Tam
Keyword(s):  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Dual Band Antenna

Design and Performance Exploration of a Compact Dual-Band Antenna for Wban-On Body Applications

2020 ◽  
pp. 2150034
Author(s):  
Asmita Rajawat ◽  
Mohit Mohta ◽  
Aayush Sharma ◽  
Sindhu Hak Gupta
Keyword(s):  
Wireless Body Area Network ◽  
Ultra Wideband ◽  
Dual Band ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Resonant Frequencies ◽  
Human Contact ◽  
Dual Band Antenna ◽  
And Performance

This paper is formulated keeping in view the need of compact antennas for wireless body area network (WBAN). The designed compact dual-band antenna (20[Formula: see text]mm [Formula: see text] 22[Formula: see text]mm [Formula: see text] 3.55[Formula: see text]mm) radiates at two resonant frequencies in the ultra-wideband (UWB) range. Compactness in the designed antenna is attained by using three different layers of copper and the return loss and gain characteristics are improved by incorporating a G-shape defected ground structure (DGS). The proposed antenna is unidirectional and immune to human contact since it is designed in the UWB range (3.1–10.6[Formula: see text]GHz) which makes it highly suitable for WBAN applications as its low radiating power is harmless for human tissues. The substrate used for design is RT/duroid with a relative permittivity of 2.2. The antenna exhibits superior frequency domain characteristics with simulated [Formula: see text] of [Formula: see text]16.39[Formula: see text]dB for 4.08[Formula: see text]GHz and [Formula: see text]21.87[Formula: see text]dB for 8.18[Formula: see text]GHz and realized gain of 3.69 and 6.02[Formula: see text]dB for 4.08 and 8.18[Formula: see text]GHz, respectively. The measured [Formula: see text] depicts a shift to the lower band for the fabricated antenna with the values of [Formula: see text]15.36[Formula: see text]dB for 3.55[Formula: see text]GHz and [Formula: see text]21.66[Formula: see text]dB for 6.218[Formula: see text]GHz.

scholarly journals An Eight Element Dual Band Antenna for Future 5G Smartphones

Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 3022
Author(s):  
Haider Ali ◽  
Xin-Cheng Ren ◽  
Anas M. Hashmi ◽  
Muhammad Rizwan Anjum ◽  
Inam Bari ◽  
...  
Keyword(s):  
Mimo System ◽  
Antenna System ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Radiation Characteristics ◽  
High Data ◽  
Dual Band Antenna ◽  
Acceptable Range ◽  
Peak Gain

The demand of 5G in modern communication era due to its high data rate, reliable connectivity and low latency is enormous. This paper presents a novel dual band antenna resonating at two distinct bands allotted for 5G services. The proposed antenna is composed of inverted L shape probes comprising a rectangular defected ground structure. The propose antenna covers 3.4–3.6 GHz and 5.4–5.6 GHz spectrum. In propose MIMO system, the efficiency ranges from 52 to 69% with peak gain of 3.1 dBi. The proposed antenna system is sufficiently isolated with minimum value of 13 dB and ECC less than 0.05 among any two radiating elements. Similarly, the channel capacity is found to be 38 and 39.5 at both resonating bands at 20 dB SNR and diversity and mean effective gains lies in acceptable range. The radiation characteristics of the proposed design shows that the proposed antenna is providing good diversity characteristics and SAR values have demonstrated to be safe for user vicinity. The proposed dual band antenna prototype is developed tested. With the measured results obtained, the MIMO system proposed can be seen as vital candidate for 5G LTE band 42 and 46 services.

Novel dual-band multistrip monopole antenna with defected ground structure for WLAN/IMT/BLUETOOTH/WIMAX applications

2013 ◽  
Vol 6 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Jaswinder Kaur ◽  
Rajesh Khanna ◽  
Machavaram Kartikeyan
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Design Procedure ◽  
Monopole Antenna ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Simulation Results

In the present work, a novel multistrip monopole antenna fed by a cross-shaped stripline comprising one vertical and two horizontal strips has been proposed for wireless local area network (WLAN)/Industrial, Scientific, and Medical band (ISM)/International Mobile Telecommunication (IMT)/BLUETOOTH/Worldwide Interoperability for Microwave Access (WiMAX) applications. The designed antenna has a small overall size of 20 × 30 mm2. The goal of this paper is to use defected ground structure (DGS) in the proposed antenna design to achieve dual-band operation with appreciable impedance bandwidth at the two operating modes satisfying several communication standards simultaneously. The antenna was simulated using Computer Simulation Technology Microwave Studio (CST MWS) V9 based on the finite integration technique (FIT) with perfect boundary approximation. Finally, the proposed antenna was fabricated and some performance parameters were measured to validate against simulation results. The design procedure, parametric analysis, simulation results along with measurements for this multistrip monopole antenna using DGS operating simultaneously at WLAN (2.4/5.8 GHz), IMT (2.35 GHz), BLUETOOTH (2.45 GHz), and WiMAX (5.5 GHz) are presented.

Dual-Band Proximity Coupled Feed Microstrip Patch Antenna with ‘T’ Slot on the Radiating Patch and ‘Dumbbell’ Shaped Defected Ground Structure

2016 ◽  
Vol 3 (2) ◽  
pp. 435 ◽  
Author(s):  
Dawit Fitsum ◽  
Dilip Mali ◽  
Mohammed Ismail
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

<p>This paper presents Dual-Band proximity coupled feed rectangular Microstrip patch antenna with slots on the radiating patch and Defected Ground Structure. Initially a simple proximity coupled feed rectangular Microstrip patch antenna resonating at 2.4 GHz is designed. Etching out a ‘Dumbbell’ shaped defect from the ground plane and ‘T’ shaped slot from the radiating patch of the proximity coupled feed rectangular Microstrip patch antenna, results in a Dual-Band operation, i.e., resonating at 2.4 GHz and 4.5 GHz; with 30.3 % and 18.8% reduction in the overall area of the patch and the ground plane of the reference antenna respectively. The proposed antenna resonates in S-band at frequency of 2.4 GHz with bandwidth of 123.6 MHz and C-band at frequency of 4.5 GHz with bandwidth of 200 MHz, and a very good return loss of -22.1818 dB and -19.0839 dB at resonant frequency of 2.4 GHz and 4.5 GHz respectively is obtained. The proposed antenna is useful for different wireless applications in the S-band and C-band.</p>

Sign in / Sign up

Export Citation Format

Share Document