This paper presents the simulation and experimental studies of a conformal microstrip slot antenna integrated with artificial magnetic conductor (AMC) for hyperthermia application. In proposed applicator, an AMC consisting array modified ring patches on grounded dielectric substrate is located at optimized distance (=4 mm) from improved performance applicator. The feed configuration consists tapered line curved tuning stub. configurations are to widen its bandwidth so that changes in...

A new compact ultra-wideband (UWB) filtering antenna having good band-edge selectivity and suppressed unwanted harmonics is proposed in this paper. The UWB obtained by integrating modified elliptic-shaped with super-compact bandpass filter (BPF). Initially, a designed investigated through numerical simulation experimentally. Further, the geometrical parameters of BPF are optimized using software for its integration to improve passband harmonic suppression capability antenna. has simulated...

The simulation and experimental studies of an aperture-coupled wideband dual segment rectangular dielectric resonator antenna with metamaterial for C-band applications are presented in this paper. consists Alumina (Al2O3) ceramic as upper Teflon lower segment. combination circular-shaped coplanar split-ring conducting strip has been used superstrate. With the use superstrate, bandwidth is increased by 48% through 22% experimentally. broadside radiation pattern converted into directive...

A super-compact ultra-wideband (UWB) microstrip band-pass filter (BPF) with good selectivity and wide stopband is proposed in this paper. The super-compactness along of the achieved by integrating modified multimode resonator-based UWB BPF defected ground structure (DGS)-based compact low-pass (LPF). LPF designed using four non-uniform configurations DGS units a 50 Ω line. Each unit formed cascading three isosceles U-shaped DGSs. Further, an equivalent RLC circuit model to validate numerical...

A compact lowpass filter (LPF) with wide stopband which uses four non-uniform cascaded defected ground structure (DGS) units along a 50 Ω microstrip line is reported in this article. Each DGS unit, consists of combination three isosceles U-shaped DGSs analyzed terms an equivalent RLC circuit model. Every the unit provides one attenuation pole. It found through performance comparison proposed dumbbell- and fork-shaped that higher quality factor. Further, modeling LPF carried out using The...

A dual segment cylindrical dielectric resonator antenna with metamaterial superstrate is presented in this paper. The cover acting as a converging lens sharply increasing the gain of proposed and also responsible for bandwidth. having better impedance matching (less than -10 dB return loss) wide frequency band bandwidth 2.12 GHz (8.49-10.61 GHz) peak 12.86 dB. parametric analysis some key parameters. Broadside radiation pattern obtained without metamaterial, while directive narrow beamwidth...

In the present paper, a compact L-band microstrip interdigital bandpass filter (BPF) with spurlines is designed. proposed BPF, spurious responses are suppressed and stopband attenuation better than -14 dB everywhere upto 8 GHz excepting that near centre frequency of 4.87 GHz. The 3-dB bandwidth BPF 970 MHz (0.99 - 1.96 GHz) 1.475 insertion loss value varies from 0.16 to 0.61 over range 1.04 1.91 desired passband, group delay 2.8 ns. suitable for application satellite navigation like global...

This paper examines the influence of water bolus coupling layer on specific absorption rate and temperature distributions respectively in tissue during hyperthermia treatment human limb tumor using a previously reported microstrip slot antenna integrated with compact artificial magnetic conductor (AMC) reflector at 2.45 GHz. The simulation study reveals effectiveness antenna-AMC combination for arm thigh tumors. Further, results indicate that treatment, hotspot skin can be reduced by...

Abstract This article presents a compact rectangular impedance resonator (RIR)–based ultra-wideband bandpass filter with an improved reflection coefficient within the passband and controllable cut-off frequencies. The proposed consists of anti-parallel coupled RIR open-loop defected ground structure (ROL-DGS) etched on plane. ROL-DGS ensures better in-band out-off-band characteristics reduced size due to its high Q-factor. short- open-circuit stubs control lower ( f CL ) upper CU 3-dB...

This paper describes simulation and/or experimental studies of specific absorption rate (SAR) and temperature distributions in a biological phantom (muscle)/realistic tri-layered bio-media without with oval-/irregular-shaped tumour direct contact hybrid mode (water-loaded) metal-dielectric wall diagonal horn designed at 2450 915 MHz their comparison among themselves those due to respective conventional metal horns. The horns reported this provide simple effective means enhance the...

Simulation study of a simple structured filter-antenna combination using dielectric resonator (DR) is presented in this paper. The coupling between the input and output ports filter occurs due to alumina ceramic acting as DR same utilized an antenna. proposed filtering antenna (DRA) provides good impedance matching. simulated -10 dB reflection coefficient bandwidth DRA found be 930 MHz (11.34 - 12.27 GHz) with centre frequency 11.88 GHz. realized gain varies from 4.8 5.4 over its operating...

Abstract In this paper, theoretical/simulation study of specific absorption rate (SAR) and/or temperature distributions in a bi-layered bio-media (fat and muscle)/realistic tri-layered (skin, fat, muscle layers) direct contact with water-loaded metal diagonal horn (MDH) designed at 915 MHz are investigated. The effects fat thickness on the input reflection coefficient, coefficient interface between MDH bio-media, SAR distribution also studied through simulation theoretically MHz. Further,...

In this paper, a modified microstrip interdigital bandpass filter (IBPF) with pair of spurlines and defected ground structure (DGS) containing stepped impedance resonator (SIR) is proposed. A combination SIR-shaped DGS used to obtain wide stopband which the result band notched characteristics spurline harmonics suppression DGS. The 3-dB bandwidth proposed 1.153 GHz (79%) covers frequency range 0.885-2.038 GHz. compact having size 0.107 λ0 × 0.075 λ0, where free space wavelength at centre...

In the present study, a pencil beam pattern synthesis of uniformly excited large thinned planar antenna (LTPA) arrays is proposed. The aim to find out best positions 'ON' and 'OFF' elements in array corresponding lowest possible peak side lobe level (PSLL). Modified binary coded genetic algorithm (MBC-GA) utilized determine optimum solution with less computational cost. order evaluate performance proposed method, 32∗48-element LTPA considered for numerical analysis.

A compact aperture-coupled dual segment rectangular dielectric resonator antenna (ACDS-RDRA) is described in this paper. The consists of Teflon (εr = 2.1) as lower and liquid phase (glass) sintered Barium Strontium Titanate (BST) namely Ba <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.5</sub> Sr TiO xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> 27) upper segment. 10 wt% PbO-BaO-B xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O -SiO...

The simulation and experimental studies of a compact dual segment cylindrical dielectric resonator antenna (DRA) for X-band applications are presented in this paper. consists Teflon (ε <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> = 2.1) as lower ceramic material (Sr La xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Mg W O xmlns:xlink="http://www.w3.org/1999/xlink">12</sub> ) constant ε 22 loss tangent tan δ 0.0021 upper segment....

In this paper, a low‐profile, high‐gain filtering antenna is proposed and developed for n‐77 (3300–4200 MHz) n‐78 band (3300−3800 applications. The suggested derived from circular patch antenna. To efficiently reduce the harmonics, in lower upper stopbands, pair of sectoral arcs rectangular slots etched out driven patch. Furthermore, resultant structure surrounded by ring split at three different locations. Simulation studies reveal that with sectors coupled highly responsible extending...