Dual-band Microstrip Patch Antenna Research Articles

Design of Dual-band low profile rectangular microstrip patch antenna using FR4 substrate material for wireless applications

Abstract In recent days, wireless technology getting more advanced to fulfil the user requirement. Based on this the design for achieving the requirement is still under researching to overcome the drawbacks in existing design. Many number of antenna design with lightweight, cost effective are proposed with various frequency ranges but still has some backlogs. In this paper, the new improved rectangular microstrip patch antenna design for wireless communication like WiMAX, WLAN etc. was proposed along with its improved design parameters like impedance matching, gain, voltage standing wave ratio, return loss. Then radiation pattern also simulated for both E-plane and H-plane by using the HFSS software. This proposed design utilizes the bandwidth effectively within the desired frequency range of (3.3–5.2) GHz to obtain the high efficiency.

Dual-Band Microstrip Antenna Based on Polarization Conversion Metasurface Structure

A dual-band microstrip patch antenna based on polarization conversion metasurface structure is designed. By etching the complementary split ring resonator (CSRR) on the ground plane, a new resonance frequency is generated. The proposed antenna is obtained through optimizing the structural parameters of CSRR. Compared with the antenna without CSRR, the return loss of the proposed antenna increases by about 40% in the original resonance frequency. The measured results demonstrate good agreement with the simulated ones, verifying the reliability of the antenna. This work provides a way to the design of multi-band antenna.

A Study on Dual-band Microstrip Rectangular Patch Antenna for Wi-Fi

This paper presents the design of a dual-band microstrip patch antenna for Wi-Fi that operates at 2.5 GHz and 5.8 GHz. The antenna contains a rectangular patch with two rectangular slots. The first slot is incorporated in the patch while the second slot is incorporated in the ground plane. The antenna is based on a microstrip fed rectangular patch printed on the FR-4 epoxy substrate with a dielectric constant of 4.4 and a thickness of 1.6 mm with patch size 24 mm × 21 mm. The simulated result shows that the realized antenna successfully works on dual-band and subsequently achieves a bandwidth of 100 MHz and 200 MHz as well as the return loss about -29.9 dB and -15.16 dB for 2.5 GHz and 5.8 GHz respectively. A stable omnidirectional radiation pattern is observed in the operating frequency bands. The antenna meets the required specifications for 802.11 WLAN standards.

Compact Dual Band Microstrip Patch Antenna for Wireless Applications with Enhanced Bandwidth

Compact Dual Band Microstrip Patch Antenna for Wireless Applications with Enhanced Bandwidth

Design and Simulation of Microstrip Multiband Antenna for Wireless Applications

This paper proposes a compact sized dual band microstrip patch antenna with microstrip feed line. The patch of antenna is a rectangular shaped patch which has a circular slot in the patch for multiband operations. This antenna covers frequency bands, centered at 2.4GHz, 3.3GHz, which is useful for the C-band and X-band operations. In this paper, a microstrip patch antenna with compact size of 21x17x1.6 mm in rectangular shape. This antenna is designed on FR4 substrate (Dielectric constant=4.4) of thickness h=1.6mm with ground of size 25x10 mm. The proposed structure were simulated on CADFEKO simulation software. This proposed antenna is suitable for multiband wireless communication systems and mobile equipments.

Design of a Symmetric CPW-Fed Patch Antenna for WLAN/WIMAX Applications Using ANN

This article presents a coplanar waveguide fed dual-band microstrip patch antenna for Wireless Local Area Network and Worldwide Interoperability for Microwave Access applications. The proposed antenna is designed using the artificial neural networks (ANN) method based on the multilayer perceptron structure; it is composed of a coplanar ground plane with a circular patch conductor printed on the FR4 dielectric substrate. The fabricated antenna configuration has a global dimension of 24 $$\times $$ 33.5 $$\times $$ 1.56 mm $$^{3}$$ . The proposed antenna presents numerous advantages like small size, low profile, and simple structure. The operation properties such as reflection coefficient, current distribution, radiation pattern, gain, and radiation efficiency are presented and discussed respectively using both ANSYS HFSS and CST MWS electromagnetic simulators. A dual band presenting three resonant frequencies is achieved by predicting the dimensions of the added slots in the radiating patch using the ANN technique. The measured − 10 dB impedance bandwidths are 390 MHz (2.17–2.56 GHz) centered at 2.46 GHz and 3670 MHz (2.82–6.49 GHz), which presents two resonant frequencies 3.73 GHz and 6.20 GHz, as the measured and the simulated results have a good agreement. Moreover, the designed antenna presents good radiation pattern over the operating bands.

A Rectangular Microstrip Patch Antenna for Dual Band Wireless Applications

Background: In this paper, the design of a dual-band microstrip patch antenna with operating frequencies of 2.16 GHz and 2.79 GHz is proposed. Methods: The proposed antenna design is based upon the defected ground structure and rectangular patch with corner cuts. The presented antenna structure is simulated and optimized using CST microwave studio software. Results: The antenna resonates at 2.16 GHz and 2.79 GHz. The bandwidth of the proposed antenna is 2.08 GHz-2.25 GHz at center frequency 2.16 GHz and is 2.7 GHz-2.87 GHz at center frequency 2.79 GHz. The optimized antenna model is fabricated and measured. The measured and simulated results are presented and discussed. The proposed antenna provides a maximum gain of 4.463 dB and the maximum directivity of 5.846 dBi. The maximum radiation efficiency and total efficiency of the antenna are 79.85% and 69.01%, respectively. Conclusion: The proposed antenna is suitable for dual-band wireless applications.

Application of FSS for Microstrip Antenna for Gain Enhancement

In this present paper, a dual-band microstrip patch antenna (MPA) using frequency selective surface (FSS) is proposed. The dual-band MPA is designed using the rectangular shaped patch with an elliptical slot at the center of the patch and full ground plane. The FSS in this paper act as a reflection plane which is loaded onto the dual-band MPA in order to improve the gain of the antenna at higher band. The FSS is obtained by the periodic array of 3 × 5-unit cell in the x-y direction, which based on the amalgamation of a square and circular loop elements. After merging the FSS, the gain and return loss at 5 GHz increased to 0.915 dB and -25.08 dB respectively. The dual-band MPA is simulated using the FR-4 substrate with a thickness of 1.6 mm and a relative permittivity of 4.4. The overall size of the MPA and FSS is relatively compact and easy to fabricate. The proposed antenna can be used in WiMAX and WLAN applications.

Design and Analysis of Frequency Reconfigurable Dual-Band Microstrip Patch Antenna for Wireless Communication

Design and Analysis of Frequency Reconfigurable Dual-Band Microstrip Patch Antenna for Wireless Communication

Design and Analysis of A Microwave Dual Band Microstrip Patch Antenna (MPA) for Wireless Communication Applications

This paper presents the design and simulation of a microstrip patch antenna (MPA) which is modeled by placing several rectangular copper layer with conductive characteristics on a substrate material with dielectric constant 3.0 and 22x18x1 mm3 geometry. This microstrip path was designed with copper material which had a very thin thickness for patch and ground. In this study, a change in resonance frequency and return loss characteristics were observed for several substrate thickness values. The radiation characteristics of the single and dual band microstrip patch antennas (MPAs) are analysed in the frequency range of 5 – 25 GHz. The microstrip patch antenna (MPA) radiate at a frequency of 15.32 GHz with -45 dB return loss. For the designed single and dual band MPA design, some electromagnetic properties such as return loss, surface current and radiation patterns were simulated. The characteristic of goods and chattels of the proposed antenna are analyzed by using the software CST Microwave Studio.

Dual-Band Single-Layer Microstrip Patch Antenna With Enhanced Bandwidth and Beamwidth Based on Reshaped Multiresonant Modes

A dual-band single-layer microstrip patch antenna (MPA) with simultaneous improvement in impedance bandwidth and radiation beamwidth is proposed in this communication. The performances of the MPA are implemented by resonating its radiative TM10 and TM12 modes at the lower and upper bands, respectively. Initially, the far-zone radiated fields of the MPA working in the TM10 mode are theoretically investigated. It demonstrates that its E-plane half-power beamwidth (HPBW) in the lower band is significantly widened by removing the array factor between dual equivalent slots. After that, the MPA working in TM12 mode is deeply studied and analyzed. The results depict that its wide E-plane HPBW and low H-plane sidelobe level (SLL) in the upper band could be obtained by reshaping radiation patterns of its improved TM12 mode via the shorting pins. Additionally, a linear slot is cut on the core radiator so as to achieve a good impedance matching. With these arrangements, the E-plane HPBW, H-plane SLL, and impedance bandwidth of this designed MPA can be simultaneously enhanced in the dual bands. Finally, the proposed antenna is fabricated and measured. The experimental results show that the antenna has gained an improved bandwidth ( $\vert S_{11}\vert –10 dB) ranging from 3.45 to 3.77 GHz and 5.75 to 6.04 GHz with two attenuation poles. Most importantly, the HPBW of its E-plane radiation pattern is successfully widened to around 135° over these dual operating bands. Moreover, the high H-plane SLL of the antenna is decreased to about −10 dB in the upper band.

Microstrip patch antenna feed for offset reflector antenna for dual band application

In this article, details of a dual band microstrip patch antenna (MPA) array feed for an offset reflector antenna is presented. The main objective of the proposed structure is to achieve low cross-polarization at Φ = 90° plane in the reflector pattern. Low cross-polar levels in the reflector pattern are achieved by illuminating the reflector with fields of the proposed dual band feed structure. A centered circular array as the dual band feed structure is proposed in which the central radiating element is a dual mode circular MPA operating at 6 GHz and the surrounding circular ring of eight circular MPA elements operating at 4 GHz in the dominant mode. The dual mode central antenna uses the concept of conjugate field matching for cross-polarization reduction. TM21 mode is excited at an appropriate ratio with the TM11 mode to achieve the proper field matching at 6 GHz. The radius of the surrounding circular array is varied to obtain cross-polarization better than −30 dB at both the resonant frequencies. The offset reflector gain is found to be better than 37 dB with a 2.5 m parabolic reflector and F/D = 0.8 at both the operating frequencies.

Dual-band slot microstrip patch antennas with dual-radiation modes for wireless communication

AbstractIn this paper, a novel compact dual-band microstrip patch antenna with dual-radiation modes is investigated. The proposed antenna consists of a rectangular ground plane, a U-shaped feed probe, and an H-shaped slot radiating patch. By adjusting the size of these structures, a dual-band antenna can be obtained. In the low-frequency band, the antenna can radiate one radiation beam with high gain. In the high-frequency band, the antenna can achieve monopole-like radiation pattern. Therefore, an antenna prototype is fabricated and measured for validation. Good agreement between the simulated and measured results is observed in this paper. The antenna's operating frequency ranges are 3.6–3.85 GHz in the low-frequency band and 5.1–6.1 GHz in the high-frequency band with the reflection coefficient less than −10 dB. At 3.7 GHz, the antenna radiate one beam with 8.8 dBi realized gain. At 5.5 GHz, it exhibits dual-radiation beams directed to −48 and 48° with 5.6 and 5.5 dBi realized gain in the xoz-plane and −48 and 48° with 2.9 and 3.0 dBi realized gain in the yoz-plane. Therefore, the proposed antenna is a good candidate for wireless communication systems.

Design and optimization of a dual-band slotted microstrip patch antenna using Differential Evolution Algorithm with improved cross polarization characteristics for wireless applications

ABSTRACTThis work presents a rectangular microstrip-line-fed patch antenna for Long Term Evolution, Universal Mobile Telecommunication Systems, Local Area Network, Bluetooth, Industrial, Scientific and Medical, Wireless Broadband, Worldwide Interoperability for Microwave Access, International Mobile Telecommunication, Radio Frequency Identification and Wireless Fidelity applications. The overall dimensions of antenna are 70 × 70 mm2. The antenna consists of a slotted radiating patch and defected ground structure, which is used to achieve dual-band frequency characteristics with appreciable bandwidth satisfying several communication standards simultaneously. Differential Evolution (DE) Algorithm is enforced in this work for achieving the best antenna geometrical design parameters and to obtain the desired results. The proposed antenna covers dual-frequency bands viz. 2.34–2.68 and 5.28–6.32 GHz with their resonating frequencies at 2.53 and 5.77 GHz, respectively. Further, an improvement in cross polarization discrimination of 15.4 dB for E plane and 9 dB for H plane is observed using DE algorithm. The fabrication and measurement of proposed antenna was carried out to verify the simulation results in the succeeding sections.

Compact Single Feed Dual Band Microstrip Patch Antenna with Adjustable Dual Circular Polarization

This paper presents a novel dual-band, half E-shaped microstrip patch antenna (HEMSPA) with dual sense polarization. The proposed antenna covers two different frequency bands and radiates electromagnetic waves with left hand circular polarization (LHCP) and right hand circular polarization (RHCP) at lower and upper frequency bands, respectively. The dual frequency is realized by etching four T slits close to the radiating edges of HEMSPA. A shorting bar is adopted to attain LHCP waves at lower band while a vertical slot etched in the patch center aids in achieving RHCP waves at upper band. The proposed antenna has a small frequency ratio of 1.2 and good scalability. It can be easily re-designed for other operating frequencies with dual sense circular polarization (CP) or same sense CP at dual frequencies. The simulated reflection coefficient, axial ratio, and radiation pattern characteristics show a good agreement with the experimental data for dual-band performance. The measured −10 dB impedance bandwidth, 3 dB axial ratio bandwidth, and boresight gain are observed to be 1010 MHz, 70 MHz, 9.27 dBic and 120 MHz, 69 MHz, 6.63 dBic in the lower band, and upper band, respectively. The proposed antenna would be promising for modern wireless communication system applications.

Design of dual-band microstrip patch antenna with right-angle triangular aperture slot for energy transfer application

This work focusing on the dual-band antenna design with rectifying circuit for energy transfer system technology for enhancement gain performance. The air gap technique is applied on this microstrip antenna design work to enhance the antenna gain. The work begins with designing and analyzing the antenna via the CST Microwave Studio software. After validation on acceptable performance in simulation side is obtained, the return loss, S11 of the antenna is measured using vector network analyzer equipment. The rectifier circuit is used to convert the captured signal to DC voltage. This projected dual-band antenna has successfully accomplished the target on return loss of −44.707 dB and −32.163 dB at dual resonant frequencies for 1.8 GHz and 2.4 GHz, respectively. This proposed antenna design benefits in low cost fabrication and has achieved high gain of 6.31 dBi and 7.82 dBi for dual-band functioning frequencies.

Simple Mail Box Design of Dual Band Microstrip Patch Antenna for Wireless LAN Communications

In this paper, a simple mail box design of a dual band microstrip patch antenna, is proposed, designed, fabricated and measured for wireless LAN communications. The proposed antenna is designed using the TLC 30 (TACONIC) substrate, with a relative permittivity of 4.3 and substrate height of 1.6mm. It is designed to operate at 2.44 GHz and 5. 30 GHz respectively. The proposed antenna is the size of 31mm x 34mm x1.6mm and is incited by a 50 Ω micro strip feed line. The characteristics of the antenna are designed and the performance of the modelled antenna is evaluated using CST Microwave Studio. The return loss, radiation patterns and peak antenna gain of 6.5 dBi for frequency 2.44 GHz and 6.2 dBi for 5.30 GHz is separately and successfully plotted. The fabricated prototype exhibits an agreement between the measured and simulated return loss.

Dual-Band Slim Microstrip Patch Antennas

This paper presents a planar dual-band slim microstrip patch antennas. The antenna comprises four sections: patch and shorting, centered, and offset pins with the overall size of $30\times50$ mm2. It is shown that the centered and offset pins help to improve antenna matching while providing efficient radiation performance. With the aid of shorting pins, lower band operation at 1900 MHz is achieved. Moreover, the higher frequency band is expanded from 3480 to 3570 MHz. Simulations show that at the lower band frequencies, the antenna gain and efficiency are 1.0 dBi and 28%, respectively. On the other hand, at the upper frequency band, the antenna maximum gain is 2.4 dBi, and the efficiency of at least 25% is observed. The numerical simulation shows that the number of resonant frequencies is directly related to the patch width. In order to validate the simulation results, a prototype of the proposed antenna is fabricated and measured. Good agreement has been achieved between the simulation and measurement results.

Enhancing gain of dual band antenna for Wi-Fi/WiMAX applications using array technique

This study describes the design of dual rectangular microstrip patch antenna for Wi-Fi and WiMAX wireless communication applications. In this work, the technique of design array patch antennas was used in order to improve the physical antenna characteristics for Wi-Fi and WiMAX device. As a result, the proposed technique causes to increase the gain and directivity of the antenna. Using this method also leads to enhance measurement bandwidth of antenna and some other antenna parameters as mentioned in this research paper. A dual-band microstrip patch antenna is developed for WiMAX/Wi-Fi wireless applications that operate at a minimum frequency of 2.4 GHz and a maximum frequency band of 3.5 GHz with its dimensions is L= 88.27 mm, W= 171.4 mm and h= 1.67 mm. The achieved parameters of dual patch array antenna for 2.4 GHz and 3.5 GHz are (gain of 8.25 dB, directivity of 10.4 dBi, measurement bandwidth of 65.82 MHz and measurement return loss of -20.86 dB) and (gain of 7.56 dB, directivity of 8.76 dBi, measurement bandwidth of 98.96 MHz and measurement return loss of -21.38 dB) respectively.

Microstrip antenna with aperture reflector and C-shaped dipoles for LTE and wireless communications

A dual-band microstrip patch antenna with copper reflector plate, and high gain for LTE and wireless communications applications is presented. The proposed antenna consists of an FR4 substrate which is kept by Teflon spacers at a specified distance from the reflector plate. The bottom layer of substrate includes two identical C-shaped dipoles, and the top layer contains irregular microstrip lines which are excited using a coaxial cable. This antenna operates in two frequency bands of 1.5–2.8 GHz and 5–5.9 GHz with gains of ∼5.5 dBi and ∼5.7 dBi, respectively. Also, it has a unidirectional radiation pattern, wide HPBW, and F/B ratio of over 12.5 dB in both frequency bands.