Multifold Bandwidth Improvement in Conformal Patch Antenna for Aircraft Application Using Corrugated Edge Coupling (original) (raw)

A Design of Bandwidth-Enhanced Conformal Antenna for Aircraft Applications

IETE Journal of Research, 2020

This paper explains the novel conformal antenna design that achieves better Bandwidth (0.53 GHz) and Gain (9 dB) with slim and flexible substrate suitable for aircraft fuselage mounting. The achieved Bandwidth of 10.2% around the operating frequency of 5.2 GHz helps in improving the cross-range resolution of Synthetic Aperture Radar (SAR). The obtained gain increases the cross-range coverage and reduces the aerodynamic drag. The parametric study of the structure is presented along with the explanation to provide the physical insight of each parameter with the help of transmission line model and surface current analysis. Already available prominent design techniques, to improve the bandwidth, are also discussed along with its limitations to use it in aircraft applications. The RT Duroid 5880 is selected for its low loss, high gain and conformability nature.

Gain enhanced conformal patch antenna with defected ground for aircraft applications

IET Communications, 2019

This study describes a design of conformal patch antenna for airborne applications especially in measuring the velocity of ocean and river current. By considering the decorrelation time, precipitation, resolution, and size of the antenna, the current system operates within the C-band frequency range of 5.05-5.45 GHz. This design has achieved a bandwidth of 7.7% that helps in increasing the cross-range resolution. A maximum gain of 10 dB is achieved at the bore side angle. The normalised side lobe level (SLL) of −26 dB reduces aliasing by achieving higher pulse repetition rate. Defected ground structure (DGS) is used for suppressing higher harmonics and its effect has been explained with simulation results. As most aircrafts are made of carbon fibre composites (CFC), this antenna has been checked by mounting on CFC sheets for real-time analysis and shows good performance in terms of both measured and simulated results. The transmission line model of the proposed patch antenna and impedance matching network is also described with the corresponding circuits. The characteristic mode analysis is carried out to study the intuitive behaviour and to optimise the performance of patch antenna by analysing the performance metrics of different current modes.

A Practical Approach for Design of a Wideband Microstrip Patch Antenna Conformed to Cylindrical Surface

2016

Conformity of the antenna to the mounting surface is the most essential requirement of modern communication system, whether it be antenna mounted on vehicles or airborne applications primarily due to the aero dynamical advantages of such antennas. In this paper we present the analysis of a inset microstrip line fed patch on cylindrical substrate with electrically small radius of 0.1 times free space wavelength. We try to analyse the effect that the bending has on the resonant frequency, inset length of the feed line of the patch antenna. We present the design dimensions, S11 & Radiation pattern results for the designed conformal patch antenna. KeywordsCylindrical Microstrip Patch Antenna (CMPA), Inset Microstrip Line Feed, Impedance Bandwidth, VSWR, Angular Width.

Rigorous analysis of conformal microstrip patch antennas using the FDTD method

Microwave and Optical Technology Letters, 2003

corresponds to about 0.92-wavelength of the operating frequency at 5.5 GHz. The selection of the 50-mm spacing between the two monopoles was found to provide an optimal or near-optimal antenna gain enhancement for operating frequencies across the antenna's upper band (5.2/5.8-GHz bands). In addition, the sizes of the larger monopole in the center and the two smaller monopoles at the array's two sides were determined with the aid of the commercially available simulation software Ansoft High Frequency Structure Simulator (HFSS) in order to achieve two separate wide bandwidths to cover the 2.4/5.2/5.8-GHz bands. Also note that, for feeding the two smaller monopoles, two 100⍀ microstrip lines are used, which are printed on the substrate's front surface and oriented along the top edge of the ground plane in the back surface. The two 100⍀ microstrip lines are then connected to a 50⍀ microstrip line feeding the center monopole at the feed point.

ANALYSIS OF PATCH ANTENNA FOR PARAMETER ENHANCEMENT AT 1.911GHZ

In this paper work, A patch antenna and our proposed metamaterial patch antenna are simulated and compared. A rectangular microstrip patch antenna along with the innovative metamaterial structure is proposed at a height of 3.2mm from the ground plane. This work is mainly focused on increasing the potential parameters of microstrip patch antennas and analyzing the dual band operation of proposed antenna.This structure produces a better performance compared to simple RMPA. The implementation of the metamaterial as the substrate in a rectangular microstrip patch antenna produces high value of return loss. Rectangular Microstrip Patch antenna loaded with metamaterial (MTM) is proposed for better improvement in the impedance bandwidth and reduction in the return loss at operating frequency 1.911 GHz. The proposed antenna is designed at a height 3.2 mm from the ground plane. At 1.911 GHz, the bandwidth is increased up to 27.2 MHz in comparison to RMPA alone of bandwidth 6.5 MHz. The Return loss of proposed antenna is reduced by -19.15dB. Microstrip Patch antenna has advantages than other antenna is lightweight, inexpensive, easy to fabricate and achieve radiation characteristics with higher return loss. CST MICROWAVE STUDIO is used to design the metamaterial based rectangular microstrip patch antenna. Where C = free space velocity of light, r =Dielectric constant of substrate The effective dielectric constant of the rectangular microstrip patch antenn (2) Actual length of the patch (L):

Microstrip patch antennas for various applications: a review

Indonesian Journal of Electrical Engineering and Computer Science

This paper aims to review microstrip antennas for various applications. The design of microstrip patch antennas is a new research field developed for use in 5th generation communication applications. An antenna is a collection of multiple devices connected together that function as a single antenna to send or receive radio waves. Antennas can be of different shapes and sizes. The microstrip patch is an antenna pattern that is light in weight, low profile, and focuses on producing results. In the future, microstrip patch antennas may be used for some 6G communication systems applications. In addition, 6G communication applications can be created on other devices, including biomedical, autonomous vehicles, vehicle-to-vehicle (V2V) communication, internet of things (IoT), machine learning, Artificial Neural Network Algorithms, radar, and wireless communication. In the past, the multiple input, multiple output (MIMO) pattern was a standard geometry used in 4G wireless applications. This...

Design of a Patch Antenna on Different Substrates for Higher Frequencies Applications

Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar, 2020

M icrostrip patch antenna is a charming area for the scientists doing research on the future wireless mobile phones. The antenna for future wireless mobile appliances must encompass a straightforward clear structure that will result in its inexpensive production. The use of higher frequencies for future wireless mobile phones had minimized the volume of these antennas. The scientists are emphasizing on high frequencies band from 12GHz to 80GHz. During the designing process the selection of an appropriate substrate's material plays an important role. The appropriate substrate material not only provides mechanical strength but its electrical characteristics are very important for the size, resonant frequency and the improvement of the antenna's efficiency. This is why the substrate material must fulfill the electrical and mechanical prerequisites of the antenna. The author of (Nor et al., 2016) presented an antenna that demonstrated a small bandwidth of 2.1GHz but the Gain of this antenna was very large as compared to the

Performance Analysis of Microstrip Conformal Antenna Array and Effect of Mutual Coupling for Different Curvature

International Journal of Computer Applications, 2016

This geometry can offer certain characteristics that can't be achieve by planner antenna. Antenna is design to function in 2.4 GHz wireless radio band. This work present performance of 4-element conformal antenna array for cylindrical surface and observe effect of mutual coupling between patch. In this, angle is preserved to conform the shape to reduce extra drag. The radius of cylinder is considered to be atleast one quarter wavelength or slightly more. The simulated results shows its resonant frequency is not affected with change in curvature however the radiation patterns are significantly affected more in elevation direction and less in azimuth. Simulations has been carried on CST software.

Antenna Design and Fabrication with Circular Microstrip Patch: A Review

Journal on Today's Ideas - Tomorrow's Technologies, 2021

The paper presents a review on antenna designing and fabrication techniques with Microstrip Patch (MSP) development. The requirements of MSP are remote controlling, mobile communication, space communication and all wireless communication areas. Aim of this development is to provide a new approach of the designing and simulation of circularMSP for 5.8 GHz operating frequency. CST MICROWAVE STUDIO (MWS) facilitates the quick and accurate analysis of high frequency (HF) antennas which gives the responses and results before fabrication of actual patch with complete technology for 3D EM. FR-4 glass epoxy material board is used for fabrication which is admired and adaptable highpressure thermoset plastic laminate grade with superior strength to weight ratios. Circular MSP is easy to fabricate, portable, lightweight and low cost antenna. N9923A Field Fox RF VNA (Vector Network Analyser) were used for studying and testing all the parameters of fabricated MSP.