scholarly journals Design of compact reconfigurable UWB antenna with WiMAX and WLAN band rejection

2020 ◽  
Vol 17 (3) ◽  
pp. 1427
Author(s):  
N. F. Miswadi ◽  
M. T. Ali
Keyword(s):  
Electromagnetic Interference ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Uwb Antenna ◽  
Parasitic Element ◽  
Uwb Antennas ◽  
Operating Bandwidth ◽  
Good Agreement

Two reconfigurable UWB antennas with band rejection characteristics are presented in this paper. By applying concept of parasitic element and etching slot in these two proposed antenna design WiMAX and WLAN band rejection are obtained, respectively to avoid potential electromagnetic interference (EMI). The proposed antennas are printed on 30mm x 40 mm Rogers5880 substrate. Furthermore, ideal switches are employed to achieve switchable band rejection UWB antenna.In this paper, two designs of reconfigurable UWB antenna with band rejection were proposed; namely a reconfigurable UWB antenna with WiMAX band rejection (Antenna 1), reconfigurable UWB antenna with WLAN band rejection (Antenna 2). The proposed antennas were successfully simulated, fabricated and measured. The Antenna 1 have impedance bandwidth from 2.99 GHz to 10.58 GHz with band rejection at 3.52GHz by utilizing C-shaped parasitic stripline. Meanwhile, Antenna 2 achieved an operating bandwidth from 2.99 – 10.82GHz with VSWR less than 2 except for the WLAN band operating at 4.92 – 5.84 GHz.The measured results for both antennas show good agreement with simulated ones.

scholarly journals Achievement of Various Widebands: A Design of Wide-Slot Antennas Using Shape Blending

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Aiting Wu ◽  
Zhonghai Zhang ◽  
Boran Guan ◽  
Liang Peng
Keyword(s):  
Geometric Structure ◽  
Design Method ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Slot Antennas ◽  
Regular Trend ◽  
Shape Blending ◽  
New Process ◽  
Convenient Model ◽  
Good Agreement

When designing printed wide-slot antennas, the shape or profile of the tuning stub is a key geometric structure that affects the impedance bandwidth of the antenna. This article introduces a new process for designing tuning stub shapes, which are the blended results of a diamond and a circle. By using different geometry shapes, the design could generate a series of bandwidths with a regular trend. Detailed investigations and analysis were conducted on some key geometry parameters to explore their impact on the impedance bandwidth of the antenna. To certify the new design method, several prototypes were simulated, developed, and measured. The experimental and simulated results showed good agreement with each other. The results indicate that by properly selecting various blended shapes, a BW range from 80.1 to 117.3% for a VSWR of less than 2 could be obtained, which provides a convenient model for a wideband antenna design.

scholarly journals Coplanar Stripline-Fed Wideband Yagi Dipole Antenna with Filtering-Radiating Performance

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1258
Author(s):  
Yong Chen ◽  
Gege Lu ◽  
Shiyan Wang ◽  
Jianpeng Wang
Keyword(s):  
High Frequency ◽  
Dipole Antenna ◽  
Frequency Selectivity ◽  
Antenna Design ◽  
Initial Structure ◽  
Coplanar Stripline ◽  
Half Wavelength ◽  
Yagi Antenna ◽  
Operating Bandwidth ◽  
Good Agreement

In this article, a wideband filtering-radiating Yagi dipole antenna with the coplanar stripline (CPS) excitation form is investigated, designed, and fabricated. By introducing an open-circuited half-wavelength resonator between the CPS structure and dipole, the gain selectivity has been improved and the operating bandwidth is simultaneously enhanced. Then, the intrinsic filtering-radiating performance of Yagi antenna is studied. By implementing a reflector on initial structure, it is observed that two radiation nulls appear at both lower and upper gain passband edges, respectively. Moreover, in order to improve the selectivity in the upper stopband, a pair of U-shaped resonators are employed and coupled to CPS directly. As such, the antenna design is finally completed with expected characteristics. To verify the feasibility of the proposed scheme, a filtering Yagi antenna prototype with a wide bandwidth covering from 3.64 GHz to 4.38 GHz is designed, fabricated, and measured. Both simulated and measured results are found to be in good agreement, thus demonstrating that the presented antenna has the performances of high frequency selectivity and stable in-band gain.

scholarly journals Ultra-Wideband Antennas for Wireless Communication Applications

2019 ◽  
Vol 2019 ◽  
pp. 1-25 ◽  
Author(s):  
Tale Saeidi ◽  
Idris Ismail ◽  
Wong Peng Wen ◽  
Adam R. H. Alhawari ◽  
Ahmad Mohammadi
Keyword(s):  
Wireless Communication ◽  
Review Paper ◽  
Wide Band ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Uwb Antenna ◽  
Uwb Antennas ◽  
Communication Device ◽  
Device Applications ◽  
Portable Communication

A review paper concerning wide-band and ultra-wideband (UWB) antennas used for wireless communication purposes in terms of the materials as well as a numerical analysis is presented. These antennas which are taken into account are listed as wide-band microstrip antenna, wide-band monopole antenna over a plate, wide-slot UWB antenna, stacked patch UWB antenna, taper slot (TSA) UWB antenna, metamaterial (MTM) structure UWB antennas, elliptical printed monopole UWB antenna, and flexible wearable UWB antenna. The antennas’ performance is compared based on their size and how they can be applicable for portable communication device applications. This review paper furnishes a proper direction to select varieties of figures in terms of impedance bandwidth, gain, directivity, dimensions, time domain characteristics, and materials affecting these antenna’s characteristics.

scholarly journals Directive Stacked Patch Antenna for UWB Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Sharif I. Mitu Sheikh ◽  
W. Abu-Al-Saud ◽  
A. B. Numan
Keyword(s):  
Software Defined Radio ◽  
Ground Plane ◽  
Impedance Bandwidth ◽  
Uwb Antenna ◽  
Radio System ◽  
Signal Tracking ◽  
Uwb Antennas ◽  
Received Power ◽  
Wireless Signal ◽  
Uwb Applications

Directional ultrawideband (UWB) antennas are popular in wireless signal-tracking and body-area networks. This paper presents a stacked microstrip antenna with an ultrawide impedance bandwidth of 114%, implemented by introducing defects on the radiating patches and the ground plane. The compact (20×34 mm) antenna exhibits a directive radiation patterns for all frequencies of the 3–10.6 GHz band. The optimized reflection response and the radiation pattern are experimentally verified. The designed UWB antenna is used to maximize the received power of a software-defined radio (SDR) platform. For an ultrawideband impulse radio system, this class of antennas is essential to improve the performance of the communication channels.

scholarly journals A Compact CPW-Fed UWB Antenna with Dual Band-Notched Characteristics

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Aiting Wu ◽  
Boran Guan
Keyword(s):  
Simple Structure ◽  
Ground Plane ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Frequency Range ◽  
Uwb Antenna ◽  
Compact Size ◽  
Excellent Candidate ◽  
Uwb Applications ◽  
Good Agreement

A compact CPW-fed planar UWB antenna with dual band-notched property is presented. The dual band rejection is achieved by etching a C-shaped slot on the radiation patch and two L-shaped parasitic strips in the ground plane. The experimental and measured results show that the proposed antenna exhibits an impedance bandwidth over an ultrawideband frequency range from 2.4 to 12.5 GHz with VSWR less than 2, except for two stopbands at 3.3 to 3.75 GHz and 5.07 to 5.83 GHz for filtering the WiMAX and WLAN signals, respectively. It also demonstrates a nearly omnidirectional radiation pattern. The fabricated antenna has a tiny size, only 32 mm × 32 mm × 0.508 mm. The simulated results are compared with the measured performance and show good agreement. The simple structure, compact size, and good characteristics make the proposed antenna an excellent candidate for UWB applications.

A Minimized MIMO-UWB Antenna with High Isolation and Triple Band-Notched Functions

Frequenz ◽  
2016 ◽  
Vol 70 (11-12) ◽  
Author(s):  
Yuanyuan Kong ◽  
Yingsong Li ◽  
Kai Yu
Keyword(s):  
Ground Plane ◽  
Design Procedure ◽  
Impedance Match ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Uwb Antenna ◽  
High Isolation ◽  
Uwb Antennas ◽  
Triple Frequency ◽  
X Band

AbstractA compact high isolation MIMO-UWB antenna with triple frequency rejection bands is proposed for UWB communication applications. The proposed MIMO-UWB antenna consists of two identical UWB antennas and each antenna element has a semicircle ring shaped radiation patch fed by a bend microstrip feeding line for covering the UWB band, which operates from 2.85 GHz to 11.79 GHz with an impedance bandwidth of 122.1 %. By etching a L-shaped slot on the ground plane, and embedding an “anchor” shaped stub into the patch and integrating an open ring under the semicircle shaped radiation patch, three notch bands are realized to suppress WiMAX (3.3–3.6 GHz), WLAN(5.725–5.825 GHz) and uplink of X-band satellite (7.9–8.4 GHz) signals. The high isolation with S21<–20 dB in most UWB band is obtained by adding a protruded decoupling structure. The design procedure of the MIMO-UWB antenna is given in detail. The proposed MIMO-UWB antenna is simulated, fabricated and measured. Experimental results demonstrate that the proposed MIMO-UWB antenna has a stable gain, good impedance match, high isolation, low envelope correlation coefficient and good radiation pattern at the UWB operating band and it can provide three designated notch bands.

scholarly journals Parasitic-Element-Loaded UWB Antenna with Band-Stop Function for Mobile Handset Wireless USB

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Yohan Lim ◽  
Young Joong Yoon ◽  
Byungwoon Jung
Keyword(s):  
Impedance Bandwidth ◽  
Mobile Terminals ◽  
Uwb Antenna ◽  
Parasitic Element ◽  
Wireless Usb ◽  
Different Shapes ◽  
Mobile Handset

A UWB antenna loaded by parasitic elements for wireless USB of mobile handsets is proposed for UWB service in which a band-stop function of 5.725–5.825 GHz WLAN band is required. Two kinds of parasitic elements are incorporated into a rectangular radiator to obtain enhanced impedance bandwidth and band-stop function. The proposed antenna is very compact in size. Wide bandwidths of 3.15–4.75 GHz and 7.2–10.2 GHz are achieved while 5.725–5.825 GHz is notched. Three different shapes of conventional mobile terminals are also considered for measurement.

scholarly journals A Very Wideband Circularly Polarized Crossed Straight Dipole Antenna with Cavity Reflector and Single Parasitic Element

2018 ◽  
Vol 8 (1-2) ◽  
Author(s):  
Huy Hung Tran ◽  
Minh Thuan Doan ◽  
Cong Danh Bui ◽  
Nguyen Truong Khang
Keyword(s):  
Circular Polarization ◽  
Axial Ratio ◽  
Dipole Antenna ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Parasitic Element ◽  
Proper Size ◽  
Radiating Element ◽  
Final Design ◽  
Operating Bandwidth

A very wideband circularly polarized (CP) crossed dipole antenna is presented in this paper. The primary radiating element of the antenna consists of two straight dipoles arranged orthogonally through double printed rings. To further enhance the axial ratio bandwidth, a cavity with proper size and single parasitic element are employed to generate two additional bands. The use of cavity reflector is investigated thoroughly, providing a solid framework for designing this type of antennas. The final design with an overall size of 0.92λo × 0.92λo × 0.32λo at the center CP frequency yields a measured –10 dB-impedance bandwidth of 75.2% and 3 dB-axial ratio bandwidth of 67.7%. The proposed antenna exhibits right-handed circular polarization and an average broadside gain of about 8.3 dBi over the CP operating bandwidth.

scholarly journals Design of a Planar Tri-Band Notch UWB Antenna for X-Band, WLAN, and WiMAX

2020 ◽  
Vol 10 (6) ◽  
pp. 6557-6562
Author(s):  
S. Alotaibi ◽  
A. A. Alotaibi
Keyword(s):  
Ground Plane ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Strip Line ◽  
Uwb Antenna ◽  
Notched Band ◽  
X Band ◽  
Measurement Results ◽  
Good Agreement ◽  
Triple Band

In this work, a new ultra-wideband (UWB) antenna design with 2.08GHz to 12GHz impedance bandwidth and triple-band specifications is presented. The proposed antenna is formed by a truncated square patch, a partial ground plane, and a 50Ω microstrip line. Three different types of slots were used in order to induce notched bands. A C-shaped slot is etched on the radiating patch to obtain a notched band in 3.31-4.21GHz for WiMAX. An inverted U-shaped slot in the micro-strip line induces a second notched band in order to reduce the interference with the WLAN [5.04-6.81GHz]. Finally, two inverted L-shaped slots around the micro-ribbon line on the ground plane allow the X-band [9.13 to 10.75GHz]. The antenna has dimensions of 32×28×1.6mm3. The Ansoft software (HFSS) was used to simulate the proposed structure. The simulation results are in good agreement with the measurement results. The antenna shows an omnidirectional radiation pattern.

scholarly journals CPW-Fed Flexible Ultra-Wideband Antenna for IoT Applications

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 453
Author(s):  
Sharadindu Gopal Kirtania ◽  
Bachir Adham Younes ◽  
Abdul Rakib Hossain ◽  
Tutku Karacolak ◽  
Praveen Kumar Sekhar
Keyword(s):  
High Frequency ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Uwb Antenna ◽  
Radiation Characteristics ◽  
Antenna Structure ◽  
Iot Applications ◽  
Good Agreement

In this article, an inkjet-printed circular-shaped monopole ultra-wideband (UWB) antenna with an inside-cut feed structure was implemented on a flexible polyethylene terephthalate (PET) substrate. The coplanar waveguide (CPW)-fed antenna was designed using ANSYS high-frequency structural simulator (HFSS), which operates at 3.04–10.70 GHz and 15.18–18 GHz (upper Ku band) with a return loss < −10 dB and a VSWR < 2. The antenna, with the dimensions of 47 mm × 25 mm × 0.135 mm, exhibited omnidirectional radiation characteristics over the entire impedance bandwidth, with an average peak gain of 3.94 dBi. The simulated antenna structure was in good agreement with the experiment’s measured results under flat and bending conditions, making it conducive for flexible and wearable Internet of things (IoT) applications.

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