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This paper presents an UWB monopole antenna with rectangular slots on the patch and defected ground surface. The proposed antenna has a dimension of 25mm∗30mm∗1.6mm fabricated on FR4 dielectric substrate material with dielectric constant (εr) 4.4. The microstrip feed is incorporated to monopole with rectangular slots on both the ground plane and patch which produce the extra resonance frequencies...
Paper presents a fully printable chip less RFID tag using spur line resonators. Spectral signature technique of a spur line resonator circuit is used to detect tag's ID. The tag is capable of transmitting 12-bits for the bandwidth of 1.9 to 4.04 GHz. A spur line multi resonator and two micro strip fed UWB monopole antennas reside in chip less RFID tag. Spur line multi resonator is designed on three...
Frequency reconfiguration is a requirement in most of the communication related activities involving multiband communication. A novel frequency reconfigurable Vivaldi antenna that can be used for cognitive radio is explored. In a Cognitive Radio system, the antenna should be capable of sensing the entire bandwidth and should be able to select a specific frequency. In this work, spectrum sensing is...
A modified square patch antenna, for WiFi applications, operating at 5.5 GHz, is proposed in this article. A complementary square open loop resonator, having the resonance frequency at the upper 3 dB frequency of the patch resonance, is introduced on the patch to enhance the bandwidth more than twice that of the conventional square patch antenna operating at the same frequency. The concept of introducing...
We present a simple design of Quarter-Wave Plate (QWP) and Half-Wave Plate (HWP) of an all-dielectric metasurfaces based on Elliptic Dielectric Resonators (EDRs) of minor radius 2.5 mm, ellipticity τ (τ1=1.4 or τ2=1.6), relative permittivity 10.2, loss tangent 0.003 and thickness 5.12 mm. The metasurfaces transmissions under x- and y-polarizations of the incident electric fields were studied over...
A novel compact dual-band stop frequency selective surface (FSS) for shielding GSM application is proposed. The aim of this design is to block the 900/1800 MHz GSM signals transmitted by mobile phones from entering certain buildings such as mosques, hospitals, embassies, etc. without disturbing other type of communication systems. The proposed FSS design consists of a modified double square loop with...
A Multiband microstrip antenna for Industrial, Scientific and Medical Band (ISM Band) application is proposed in this paper which have a working frequency at 902 – 928 MHz, 2400 – 2480 MHz and 5150 – 5350 MHz. The antenna design uses FR4 substrate with a relative dielectric constant 4.4, thickness 0.8 mm and has a simple structure with small size of 32×72 mm2. The simulation result showed impedance...
This paper presents the performance of bandwidth from a triangular loop shape radiating element stacked on a glass with variation of dielectric permittivity values. In this study, the dielectric permittivity value of the glass was varied from 1.5 to 10. A Kapton film (radiating element) was positioned on top of the glass and grounded with a copper layer. The radiating element was designed to operate...
A new approach for designing a narrow dual bandpass filter (BPF) using microstrip coupled line filter with new shaped of ‘bell’ structure resonator is presented in this paper. The proposed BPF consists of two fundamental resonant modes and the resonant characteristic has been investigated using Advanced Design System (ADS) software. To validate the design and analysis, the filter were fabricated and...
This paper presents an aperture-coupled microstrip antenna, which is operating at dual band of millimeter-wave (mmW) frequencies, 28GHz and 38GHz. The aperture antenna was integrated with multilayer substrate construct on 5-layers Low temperature Co-fiber Ceramic (LTCC) with 5 mils thickness. The driven patch was applied to enhance the bandwidth. The bandwidths using are 9.1 percent at 28GHz and 9...
A compact Printed 2.4GHz band-pass filter using inductance-capacitance (LC) resonator is implanted and measured. The proposed filter is designed by using LC resonator to avoid the limitation of the physical wavelength for reducing filter size. For improving filter performances, the quality factors of the lump elements are optimized. The measured results show minimum insertion loss is 0.59 dB in 2...
As an artificial material, the metamaterial has great applications in radar, stealth and electronic countermeasure because of its special electromagnetic properties. Considering its negative permittivity and negative permeability, the metamaterial is applied in wireless power transfer system to improve its performance. In this paper, a novel structure of metamaerial is designed. This metamaterial...
The favorable features of the long-term evolution (LTE) standard has attracted much interest. At the lower bands of the LTE systems, designers of mobile handsets antennas face challenges of the conflicting requirements of limited space and long wavelengths. A multi-band PIFA antenna that is printed directly on the substrate is proposed for mobile handset applications. A parametric study using the...
Dielectric Resonators are being used as antennas in wireless communication systems presently due to advantages over microstrip like low loss particularly at higher frequencies. Also with ever increasing demand for bandwidth, wide banding has become one of the prime goals of antenna design. DRA wide banding can be done using stacking. Some literature are already available for stacked DRA with simulated...
A dual band PIFA antenna for portable devices is presented. It operates in the 450 LTE (449–461 MHz) and GSM 900 (876–922 MHz) frequency bands. The proposed antenna which has a very compact size of 7 (0.01λ0) × 7 × 70 (0.1λ0) mm3, consists of two branches and a metallic patch and is suitable to integrate in small envelopes. The low cost antenna offers high total efficiency and gain in both bands....
This paper presents a T-shaped antenna at millimetre-wave (MMW) frequency ranges to offer a number of advantages including simple structure, high operating bandwidth, and high gain. Defected ground structures (DGS) have been symmetrically added in ground in order to produce multiple resonating bands, accompanied by partial ground plane to achieve continuous operating bandwidth. The antenna consists...
In this research work, authors have demonstrated an amplifier based microstrip antenna as a transmitter of dual slit-cut equilateral triangular microstrip patch structure for enhanced gain and bandwidth. The slit-cut equilateral triangular microstrip patch structure studied here is printed on economical RT Duroid substrate material having relative permittivity 2.32 and show an extra output gain with...
The use of a partial ground plane in the MPA structure can contribute to improving its frequency behavior, and avoid adaptation problems and the bandwidth narrowing, that is why DGS structures are widely used in wireless communication systems based on micro-strip technology, which requires high performances. In this regards, a parametric study of the impact of the ground plane size-reduction on the...
The dynamic capability of an Electro-Hydrostatic Actuator(EHA) to drive a heavy load with a large inertia was studied by both theoretical simulation and experiments, with a general simplified control model presented to explain the dynamic relations of EHAs and their loads. It shows that, with compact monolithic structural designs for both the actuator and its servo-motor-pump, using a notch filter...
Resonant segmented Mach-Zehnder modulators which enable DAC functionalities without the use of dedicated components are here presented. The modulators are shown to broaden the bandwidth of an EO transmitter. Error-free modulation of a 56 GBd OOK signal is demonstrated employing electronics with 22 GHz bandwidth only. The modulators are also used to shape the spectrum of an optical signal for Nyquist-space...
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