This paper presents a new approach for the design of high-gain and wide-bandwidth planar antenna arrays. It is based on coupling matrix theory which allows arrays using all-resonator structures. The parameters offer flexibility achieving controllable bandwidth. They also introduce frequency filtering functionality into can remove need to place bandpass filter after at very front end communication system. has been applied novel topologies form two wideband 4×4 utilizing rectangular waveguide...

The detection of branded and unbranded chemical materials is essential for the quality control assessment. In this work, a metamaterial inspired sensor designed fabricated, which incorporates oval-shaped wing resonators, in order to use detect diesels X-band frequency region. simulation studies were carried out by using Computer Simulation Technology (CST) Microwave studio. A transmission line was introduced into design genetic algorithm used optimize proposed structure. Parametric study...

Microstrip patch antennas have been used in many applications since their appearance. Despite great promise, narrow bandwidth and the loss at high-frequency bands limited usage medical applications. This work proposes a developed low-cost microstrip antenna suitable for microwave imaging (MWI) within wideband frequency range. The proposed is loaded with an artificial magnetic conductor (AMC) to improve performance. simulated results obtained using computer simulation technology (CST)...

This paper presents a new design of the microstrip patch antenna operated at terahertz frequencies (700-850 GHz). The conventional dimensions shrink to few microns when operating such frequencies. Thus, and its feeding network will be miniaturized extremely, their fabrications would extremely difficult. In this paper, configuration proposed is suited in way that it can modeled using multilayers structure. multilayer structure facilitates modeling, considering fabrication. has been designed...

Improvement in the antenna gain is usually achieved at expense of bandwidth and vice versa. This where realization this enhancement can be made through compromising profile. In work, we propose a new design incorporating periodic metasurface array to enhance while keeping low-profile scheme. The proposed was simulated fabricated order validate results operating frequency range from 10 MHz 43.5 GHz. Computer simulation technology (CST) microwave studio software used simulate antenna, LPKF...

In this article, different design configurations of rectangular microstrip patch antenna (RMSA) array operating at S-band frequency are presented. The substrate material utilized in the designs is Rogers-RT-5800 with dielectric permittivity (Ԑr= 2.2), thickness (h=1.6 mm), and loss tangent (δ = 0.009). performances a single element, (1×2), (2×2) (1×4) elements (3.6 GHz) investigated using CST HFSS numerical techniques. simulation results indicates that gain (8.68, 10.35, 10.43 10.52) dB,...

In this article, the design and performance of a novel rectangular microstrip patch antenna (RMPA) utilizing dielectric substrate material FR4 relative permittivity (Ԑr = 4.3) thickness (h 0.254 mm) is proposed to operate at (fr 28 GHz). Three different feeding techniques (microstrip inset line, coaxial probe, proximity coupled line) are investigated improve radiation especially gain bandwidth using Computer Simulation Technology (CST) High Frequency Structure Simulator (HFSS). The simulated...

This letter presents the design of a third-order filtering waveguide aperture antenna based on coupled cavity resonators. Three offset-coupled rectangular cavities are employed in realizing two nested loaded-stubs without costing extra structure and size. The introduce controllable transmission zeroes enhance out-of-band realized gain selectivity. To validate predicted results, prototype operating at <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Abstract In recent years, there has been a large amount of attention focused on the design filtering antennas to reduce front‐end size modern wireless communication systems. Although numerous approaches are presented in literature, they usually applicable certain microwave circuit structure. Additionally, their implementations demand extra matching circuits or structure which leads an increase antenna size. this paper, 3rd‐order operating at X‐band frequencies is utilizing coupling matrix...

In this paper, a new design of high gain and wide bandwidth microstrip patch antenna array containing double meander dipole structure is proposed. Two in-phase resonant frequencies in the Ku-band (12–18 GHz) could be achieved structure, which lead to enhance impedance without costing extra section. Besides, further enhanced 2 dBi over entire operating frequency range has been by introducing double-layer substrate technique. The proposed fabricated using E33 model LPKF prototyping PCB...

Abstract This study presents two novel topologies of a 2 × filtering antenna subarray based on all resonator structures. The coupling matrix theory is used to extract the interresonator coefficients and quality factors. parameters give controllable bandwidth subarrays. Rectangular waveguide cavity resonators are utilised implement physical layouts topologies. They operate at centre frequency 10 GHz have fractional 10% with return loss ‐20 dB. first topology consists seven feeding from...

Abstract This article proposes a new design of circularly polarized (CP) aperture antenna based on dual‐mode rectangular waveguide cavity‐resonator. A capacitive iris is employed to attain strong coupling between the cavity and input port, resulting in larger fractional bandwidth (FBW) than conventional antenna. Another embedded at corner radiating extended into maintain equal amplitude phase difference 90° radiated electric (E) fields TE 101 110 modes, thus yielding CP radiation. The...

This paper presents the design of circularly polarized microstrip array antennas. The antenna element, which is an elliptical patch fed by a diagonal line, radiates right handed (RHCP) waves. 2X1, and 2X2 arrays are designed at centre frequency 1.57 GHz. realized gains 3.7 dB, 5.7dB, 8.4dB respectively. Wilkinson power divider used to feed elements. It divides input equally between radiating patches while providing good isolation. Furthermore, it provide broadband performance covering wide...

This paper investigates the synthesis and implementation of trisection microstrip bandpass filters. Each filter consists tapped/coupled feed lines three square open-loop resonators. A single transmission zero is obtained by cross coupling non adjacent The can be placed on either side passband depending type coupling. presented filters are designed to operate at 2.0GHz with a fractional bandwidth 0.05. Two prototypes proposed electric magnetic couplings zeros located 2.1 1.9GHz respectively....

&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;With the development of modern communication systems, demand for small size, low cost, light weight, high performance antenna has increased. For this purpose, various types microstrip proposed by researchers. In paper, new design patch is presented. The conventional rectangular structure modified to a unique Step-Loaded in order enhance bandwidth.&nbsp; simulated and operated within frequency range 8-15 GHz using Computer...

&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A new configuration of a Microstrip patch antenna array is presented in this paper. The arranged such way that only one placed the E-plane and four patches are H-plane. This to make provide dual band performance increase gain. feeding network utilized based on step-loaded matching structure order maintain good impedance between input port radiation (out) ports. simulated using Computer Simulation Technology (CST) Microwave...

&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;Recently, most of researches concentrate on design broadband and high gain microstrip antenna with a low profile to fulfill modern communication system requirements. This paper presents novel patch antenna. The is based the number two (Two-Shape) shape using Computer Simulation Technology (CST) microwave studio.&nbsp; operated at X-band frequency, it provides very wide bandwidth which around 25 % center frequency 10.25 GHz. realized fluctuates between 5.3-7.7...