CPW Microstrip Patch Antenna with Circular Slot for Wireless Applications (original) (raw)

Design and Analysis of Circular Slotted Microstrip Patch Antenna

International Journal of Electronics and Telecommunications, 2019

This paper presents a novel complementary CPWfed slotted microstrip patch antenna for operation at 2.4 GHz, 5.2 GHz and 6.3 GHz frequencies. The primary structure consists of the complementary split ring resonator slots on a patch and the design is fabricated on FR-4 epoxy substrate with substrate thickness of 1.6 mm. The described structure lacks the presence of a ground plane and makes use of a number of circular complementary SRRs along with rectangular slots on the radiating patch. The structure provides a wide bandwidth of around 390 MHz, 470 MHz and 600 MHz at the three bands with return losses of -11.5 dB, -24.3996dB and -24.4226 dB, respectively. The inclusion of the rectangular slots in the CSRR based slot antenna with stairecase structure improved the performance with respect to return loss.

Micro strip Antenna with CPW Fed U-Shaped Cut-off and Circular Slot For Wireless Application

2017

In this research paper we have designed CPW feed microstrip antenna with circular slot and U-shaped cut on the rectangular patch to operate on resonant frequency is 1.9 GHz. These types of antennas are of tremendous proficiency, robust in a design and easy to assemble. The interesting and attractive features like transfer of data wirelessly, versatility of converting its designs into any geometrical shapes and compact sizes have elevated their requirementhugely. Patch elements are placed are FR4 epoxy substrate of relative permittivity 4.4 kept at in height of 1.6mm. Simulation results are presented using HFSS version 13.0. a return loss measures-24 𝑑𝐵, antenna gives the impedance bandwidth of 45%, VSWR observed is 1.15 the gain proposed and is 1.55𝑑𝐵at centre frequency of 1.9GHz.

Circular Slot Loaded Rectangular Microstrip Patch Antenna For WLAN / WiMax Applications

In the present paper a circular slot rectangular microstrip loaded antenna is proposed. The obtained bandwidth of rectangular microstrip antenna is improved up to 46.92%. The proposed antenna has frequency band in the frequency range 1.979 GHz to 3.192 GHz this frequency band is suitable for WLAN / WiMAX and other wireless communication applications. The microstrip antenna suffers from narrow bandwidth hence the present work provide an alternative solution to increase the bandwidth. The gain has been improved up to 4.68dBi and antenna efficiency is 97.63%. The proposed slot loaded Microstrip antenna is fed by 0.3 mm line feed. The proposed antenna is simulated by IE3D Zealand simulation software based on method of moments.

A compact microstrip patch antenna with circular snipped slot for GSM, Wi-Fi and WiMAX applications

… (ICET), 2011 7th …, 2011

A rectangular microstrip patch antenna with probe feed is proposed in this paper. The patch of an antenna has a key circular slot which is auxiliary truncated in circular style resulting three narrow bands of the most worthy and in-use wireless technologies of the modern age, that are GSM, Wi-Fi and WiMAX. The resonating bandwidths of the presented antenna ranges from 1.79 to 1.83 GHz for GSM 1800, 2.40 to 2.48 GHz for Wi-Fi and from 3.32 to 3.42 GHz used for WiMAX. The design process has been carried out in HFSS (High Frequency Structure Simulator) and antenna is fabricated manually, to assess and evaluate the real characteristics.

A Slotted Rectangular Microstrip Patch Antenna for Wideband Wireless Applications

International Journal of Engineering and Technology, 2017

This paper presents the utilization of slots with full and partial ground plane in rectangular Microstrip Patch Antenna (MPA). The partial ground plane has been introduced to increase the bandwidth of designed antenna. Proposed antenna is designed on FR4 glass epoxy substrate with 1.6mm thickness and dielectric constant 4.4. Designing and simulation has been carried out by using HFSS V13 software. MPA with full ground plane works on four resonant frequency bands, but the value of gain and bandwidth is less. Proposed antenna with varying partial ground plane has been designed and observed that it adorns the optimal results at ground length 12mm. The MPA with partial ground plane with ground length 12mm works on two resonant frequency bands (2.21GHz and 7.06GHz) with the value of gain (3.92dB and 4.71dB) and bandwidth (949MHz and 1030MHz) respectively. These values are at the acceptable level which meets the requirement of wireless application such as bluetooth (2.41-2.49GHz) and point to point high speed wireless communication (5.92-8.5GHz). Keyword-MPA, FR4, HFSS, bluetooth, slotted patch, microstrip I. INTRODUCTION Microstrip patch antennas have been widely used in the field of wireless communications like mobile, radar and satellite because of its unique features such as compact size, ease of fabrication, low profile, less weight and ease of installation [2]. Now days, the antenna with multiband and wideband characteristics are more preferred in the wireless systems [3]. These antennas are capable of working on different applications when installed on wireless devices. By the use of multiband or wideband antennas a single device can be used for various wireless applications under specified range of frequencies [4]. Due to these features and large demand, microstrip antennas become a major area of research for the researchers [5]. Numerous researches have been carried out in recent years by the researchers to achieve multiband and wideband applications [6]. Slotted patch antennas are designed to achieve multiband characteristics [7]. But few drawbacks have been observed in this antenna design such as it exhibits less bandwidth and less value of gain [8]. To remove these drawbacks the work has been done on the ground plane of antenna because it acts as impedance matching circuit for the antenna [9]. Partial ground plane [10], defected ground plane [9], and slotted ground plane have been designed by many researchers to achieve wideband characteristics and high value of gain for different wireless standards [11]. These antennas can be capable of work under various wireless applications such as WiMAX, WLAN, Wi-fi, bluetooth, satellite communication and radar communication [12]. In this paper slotted rectangular patch antenna is designed for wideband applications. Proposed design is analysed for both the multiband and wideband characteristics by using full and partial ground plane. Detailed design and simulated results of proposed antenna with the variation in ground plane is discussed in section 2 and 3. II. ANTENNA DESIGN AND CONFIGURATION The proposed antenna uses the FR4 glass epoxy substrate board with the thickness of 1.6mm and dielectric constant 4.4. Proposed antenna is designed by using the frequency of 2.5GHz, which lie in the range of bluetooth application. Dimensions of the rectangular patch have been calculated by using the equations (1) to (5) as shown below [1]. By using these equations the length and width of proposed antenna is found to be 28.2mm and 36.5mm respectively. The line feeding technique is used to provide the excitation to the designed antenna and the position of feed is optimized to get a good impedance matching, hence located at the centre below the radiating element as shown in Fig. 1(a). Full ground plane with length and width equal to the dimensions of the substrate is shown in Fig. 1(b) and partial ground plane with width 45.6mm and length 10mm is shown in Fig. 1(c). In the proposed antenna design the slots has been introduced to obtain the novel structure of microstrip antenna. The exact position and the symmetry between the slots are very necessary to obtain the accurate results from the designed antenna. These slots help the antenna to exhibit multiband characteristics and are also helpful in increasing the gain and bandwidth of antenna. Process of designing the slots and positioning the slots in the

Circular-Rectangular Microstrip Antenna for Wireless Applications

Generally the WLAN standard defines two frequency ranges one for the Lower (2.4-2.48GHz) and the other for the Upper (4.9- 6 GHz). In Wi-Fi, the coverage for lower and upper is specified as 2.4-2.48 GHz and 5.15-5.8GHz respectively. Commercially for Wireless LAN two separate Ethernet port adapters are currently utilized in many places– one for the 2.4 GHz band and for the 5.5 GHz band. These adapters use two different antennas for their operations. In this paper, a modified slotted microstrip antenna resonating at 2.4GHz, 5GHz and 5.5 GHz is proposed. This antenna is found to provide improved performance in terms of lower return loss and higher gain when compared to the conventional one. The antenna has been designed and simulated using ANSOFT HFSS EM simulator. It makes use of FR4 as substrate with dimensions 50mm x 40mm x 1.6mm and the antenna pattern is printed on it using copper. The outer radius of the circular microstrip antenna is 17mm. The circular antenna resonates at 2.4GHz and the rectangular antenna kept inside this circular antenna resonates at 5.5GHz. Additionally the circular-rectangular combination results in the resonance possibility with a third frequency at 5GHz also. This modified single patch antenna is analyzed in terms of resonance, bandwidth, VSWR, radiation pattern, gain and directivity

A Comparative Analysis of a Circularly Polarized Microstrip Patch Antenna with & Without U-Slot

2015

patch antenna at L-band is designed. The antenna contains a U-Slot and designed with DGS technique to reduce the size of antenna. U-slot etched in the antenna allowed the fabrication on a high-dielectric-constant (10.2) substrate that achieves a reasonable axial-ratio bandwidth. Circular Polarization can be generated on a rectangular patch antenna by truncating two opposite corners of patch. In this paper a comparison has been done between a CP Microstrip antenna with and without U-Slot. At the operating frequency of 1.575 GHz with the size of the patch is 25mm X 25mm, while ground plane of 50mm X 50mm and the thickness of the substrate is 10.2 mm.. The parameters of antenna like return loss, axial ratio, RHCP and LHCP, gain are analyzed using CST MSW Software. The operating frequency is 1.521 GHz.

Design and Analysis of Slotted Microstrip Patch Antenna, A review

2018

Antennas are an inevitable part of telecommunication. In simplest words, it is a transducer that converts electrical energy into radio signals and vice-versa. The transmission and reception of signals among people that live at the physically inaccessible placescan communicate by wireless communication technology. Like any system, the wireless system also has a medium of operation, i.e., the atmosphere. Over the years, development in the field of communication has led to many types of antennas. One of these is the microstrip patch antenna which is fabricated on a substrate layer. Although microstrip antennas can provide sufficient gain, it cannot operate over large bandwidth. There must be some adjustments between various properties of the antenna. There must be some trade-off among the size of the radiating layer, number of slots on the layer, shape and size of the slots, etc. this paper presents a study of the work carried out on such antennas and presents a summary of further poss...

Circular Patch Antenna with CPW fed and circular slots in ground plane

CPW fed antenna with circular patch is designed for dual band frequencies. Inset feed technique results in good impedance matching, size reduction and provides wide bandwidth at the fundamental operating frequency. CPW technology offers ground at the same layer. Antenna is designed for 2.6 GHz. This design emphasizes on introduction of DGS. Defected Ground structure is a method used to improve the performance of the microstrip patch antennas specially the gain and resonating frequency. It is basically a defect or a slot introduced in the ground plane. The ground plane at each side is modified for improving the performance. FR4 is used as substrate which makes it cost effective for usage. The antennas simulated are simple and compact. Design is analyzed using High Frequency Structure simulator.

Gain and Bandwidth Enhancement Analysis of Slotted Circular Microstrip Antenna

A compact microstrip circular patch antenna with enhanced gain and bandwidth is presented in this paper. The antenna is analysed for the different sizes of the rectangular slots in the patch. The antenna is designed for a resonant frequency of 2.4 GHz using the FR4 substrate having a dielectric constant of 4.4. The bandwidth of 2.41-2.49 GHz for S 11 < -10 dB, which can cover the 2.4-2.48 GHz frequency band of WLAN applications. It is observed that the gain of the designed antenna is greater than the conventional patch antenna. The bandwidth of the designed antenna is also very significant then the conventional patch antenna. The designed antenna is energized using the microstrip line feeding. Designed microstrip antenna has a VSWR <2. The different characteristics of the antenna such as gain, bandwidth, return loss, directivity and VSWR is analysed for both the designed antenna and the conventional patch antenna . The design is simulated by using the software High Frequency Structure Simulator (HFSS).