scholarly journals Design of Meta Material Inspired Series and Corporate Feed Network Antenna

The present techniques are in the form of open literature used to work on selected frequency that has eight and sixteen rectangular patches. The size of it has become compact. Each approach offers different advantages, depending on the required applications. An array antenna is designed and analyzed using series and corporate feed network The FR4 substrate material which is of low cost and easily available in market is used to design the array antenna. An analysis is carried out for both series and corporate feed array antenna in terms of return loss, peak gain, VSWR, directivity, and bandwidth. The antenna’s size is reduced to a very compact size using optimization techniques without degrading the performance characteristics. The design is implemented to work for the multiband applications rather than a single application. Simulation is carried out in HFSS (High Frequency Structure Simulator) software tool. The design proposed is analyzed based on the performance and then it is fabricated.

The need for surveillance and security in Indonesian water region which can monitor activities of distance object such as illegal fishing, foreign vessels violation, piracy of vessels and smuggling can be done by using radio wave. Maritime radar over the horizon (OTH) surface wave is able to detect the existence of foreign vessels in Indonesian waters. Based on this, the study aimed to design a low cost antenna namely Yagi - Uda linear array antenna at 15 MHz frequency at frequency range 6 – 24 MHz for the application of over the horizon radar. Yagi - Uda antenna is superior in the spread of wave suitable to OTH Radar characteristic over the sea surface and big gain. Yagi - Uda antenna develops rapidly in communication system makes it applied in many modern communication devices nowadays. This antenna was designed and simulated using Simulator Ansoft High Frequency Structure Simulator (HFSS) version 13. The simulation result of the antenna design after doing optimization was return loss (S11) = -29,62 dB, VSWR = 1.068 and gain = 2,413 dBm.


2018 ◽  
Vol 7 (3.12) ◽  
pp. 214
Author(s):  
Bondili. Kohitha Bai ◽  
Govardhani. Immadi

The design and analysis of single double (1×2) and four (1×4) element linear rectangular micro strip array antennas is done to achieve high gain and directivity. The operating frequency of the proposed array antenna is Ka-band, 20.2GHz which is a Beacon frequency of GSAT-14 launched by ISRO.The substrate material used is common for the single, double (1×2) and four (1×4) i.e. FR4 with a thickness of 0.8mm and the dielectric constant is 4.4. The antenna elements are placed uniform at a same distance. The feeding network used here is a parallel or corporate feed network. The power splitting and impedance matching is done using RF Wilkinson power divider. The entire proposed micro strip phased array antenna is evaluated using HFSS software tool.  


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.


2013 ◽  
Vol 684 ◽  
pp. 303-306
Author(s):  
Eugene Rhee ◽  
Ji Hoon Lee

There are various feeding methods of antenna like as coaxial probe, coupling, parasitic elements, and impedance matching. This paper adopted the microstrip line method as the feeding method of the antenna. The high frequency structure simulator is used to analyze the characteristics of the T-shaped microstrip antenna with various patch dimensions. In comparison with the basic microstrip antenna, this proposed T-shaped microstrip antenna with 40.38 % of patch dimensions has the optimum characteristics of resonant frequency, return loss, and radiation pattern at 2.0 GHz band.


Author(s):  
Rakesh N

Abstract: The evolution of wireless communication system has led path for innovative antenna design specifically in wideband antenna for WiMax application. In this paper design and simulation of microstrip wideband circular patch antenna array operating between 2GHz to 4Ghz is presented. The circular patch antenna is designed to operate at 3GHz line feed and the ground is itched to achieve required wideband characteristics. The simulation is carried out in EM Flow solver, High Frequency Structure Simulator software. For a single patch antenna, the return loss, lesser than -10dB throughout the bandwidth. Later an antenna array is operating between 2GHz to 4GHz frequency is designed and simulated. The return loss is lesser than -12dBi throughout the band and a peak gain is 14.7dBi. Keywords: Microstrip Patch Antenna (MPA), High Frequency Structure Simulator (HFSS).


2019 ◽  
Vol 8 (3) ◽  
pp. 1028-1035
Author(s):  
Norhudah Seman ◽  
Nazleen Syahira Mohd Suhaimi ◽  
Tien Han Chua

This paper presents the designs of phase shifters for multi-beam Nolen matrix towards the fifth generation (5G) technology at 26 GHz. The low-cost, lightweight and compact size 0° and 45° loaded stubs and chamfered 90°, 135° and 180° Schiffman phase shifters are proposed at 26 GHz. An edge at a corner of the 50 Ω microstrip line Schiffman phase shifter is chamfered to reduce the excess capacitance and unwanted reflection. However, the Schiffman phase shifter topology is not relevant to be applied for the phase shifter less than 45° as it needs very small arc bending at 26 GHz. The stubs are loaded to the phase shifter in order to obtain electrical lengths, which are less than 45°. The proposed phase shifters provide return loss better than 10 dB, insertion loss of -0.97 dB and phase difference imbalance of ± 4.04° between 25.75GHz and 26.25 GHz. The Rogers RT/duroid 5880 substrate with dielectric constant of 2.2 and substrate thickness of 0.254 mm is implemented in the designs.


2021 ◽  
Vol 19 ◽  
pp. 38-44
Author(s):  
Shilpee Patil ◽  
Vinod Kapse ◽  
Shruti Sharma ◽  
Anil Kumar Pandey

In this study, a low-profile, co-planar waveguide (CPW) fed, wideband, and dual-ring slot antenna design for biomedical applications is proposed. The proposed antenna has a total area of 10 mm × 10 mm and a height of 0.4 mm, and is designed by using a thin and biocompatible FR4 epoxy (εr = 4.4) substrate to accomplish human body isolation and great flexibility obtained by implantation. This wideband antenna covers a large bandwidth of industrial scientific and medical (ISM) frequency band, including 902.8 MHz to 928 MHz, 1.395 GHz to 1.4 GHz, 1.427 GHz to 1.432 GHz, 2.4 GHz to 2.485 GHz, and above. The simulation results of return loss, voltage standing wave ratio (VSWR), impedance matching, gain, and radiation pattern of the proposed antenna are obtained through High Frequency Structure Simulator (HFSS) 14 software.


2020 ◽  
Vol 9 (1) ◽  
pp. 1722-1725

To improve the antenna characteristics in terms of bandwidth, gain and its radiation characteristics without providing any phase reflections, Artificial Magnetic Conductor (AMC) are used in antenna designing. This paper initially designed AMC structure for 2.4GHz frequency. The proposed AMC structure consists of three L shaped and inverted L shaped slots and provides zero degrees phase reflection at 2.4GHz resonant frequency. This proposed AMC structure is incorporated on conventional micro strip square patch antenna and results are simulated in High Frequency Structure Simulator (HFSS) software. The Proposed AMC incorporated patch antenna, return loss is improved from -16.16dB to -31.75dB, VSWR is from 1.42 to 1.05, the band width is increased from 16.5 MHz to 348.1 MHz This design resonates at a frequency of 2.4GHz and applicable to Wi-Fi applications.


Author(s):  
Falguni Raval ◽  
Tulsi Patel ◽  
Trushit Upadhyaya

Background & Objective: Partially grounded frequency reconfigurable antenna is discussed in this paper. Antenna frequency cover is 4.2 GHz to 7 GHz and it has reconfigurable notchband near 5 GHz frequency. Frequency rejection is achieved by using circular split-ring slots in radiating element. The antenna can be reconfigured at 5.1 GHz, 5.4 GHz and 5.9 GHz by creating more slots in outer most split-ring. Designed antennas are printed on FR-4, low-cost substrate having relative permittivity of 4.4 and thickness of 1.6 mm. Results & Conclusion: Simulation of antennas is carried out using High Frequency Structure Simulator (HFSS) software. Designed antenna has omni directional radiation pattern. The prototype antennas are fabricated and tested using network analyzer. Good matching is observed between simulated and measured results.


2004 ◽  
Vol 40 (22) ◽  
pp. 1389 ◽  
Author(s):  
S.-S. Oh ◽  
J. Heo ◽  
D.-H. Kim ◽  
J.-W. Lee ◽  
M.-S. Song ◽  
...  

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