A compact quad-band hybrid antenna for Compass/WiMAX/WLAN applications is proposed. The hybrid antenna is designed based on the method of combining a Composite Right/Left-Handed Transmission Line (CRLH-TL) unit cell with a meandered monopole and wide multi-band characteristics are achieved by merging some of resonance frequencies of the CRLH-TL unit cell and meandered monopole together. CoPlanar ...

In this paper, the authors present an efficient Artificial Neural Network (ANN)-based model to estimate both azimuth and elevation arrival angles of a signal source. To achieve this goal, the ANN model is constructed using measurement data obtained by a rectangular antenna array in the space-frequency domain. Unlike classical super-resolution algorithms such as 2D music, ...

DRFM (Digital Radio Frequency Memory) is now widely utilized by modern radar jammers due to its high efficiency in jamming generation. However, its jammer structure is somewhat complex, since the up-conversion and down-conversion processes must be included. This paper proposes a new Synthetic Aperture Radar (SAR) jammer architecture utilizing Direct Radio Frequency Processing (DRFP), wherein ...

Design of high performance package interconnects using full-wave electromagnetic solvers is necessary due to increased operation speed, miniaturization and vertical 3D integration. Thus the segmented study and optimization is becoming inevitable for designers to improve the signal integrity of IC (Integrated Circuit) packaging. This paper addresses alternative methods and optimal designs on several components and ...

Traditional Synthetic Aperture Radar (SAR) utilizes Shannon-Nyquist theorem for high bandwidth signal sampling, which induces a complicated SAR system, and it is difficult to transmit and process a huge amount of data caused by high A/D rate. Compressive Sensing (CS) indicates that the compressible signal using a few measurements can be reconstructed by solving a ...

Due to growing importance of wireless access and the steeply growing data volumes being transported, the power consumption of wireless access networks will become an important issue in the coming years. This paper presents a model for this power consumption and investigates three base station types: macrocell, microcell and femtocell base stations. Based on these ...

In this paper, the authors propose a composite right/left handed double periodic transmission line structure with both inductance and capacitance loaded. The structure exhibits leaky wave radiation and hence can be considered for Leaky Wave Antenna (LWA) applications. They have theoretically obtained dispersion characteristics using singular perturbation method. Also, the radiation efficiency has been obtained ...

A novel design of an Electromagnetic Band Gap (EBG) structure based on the Uniplanar Compact EBG (UCEBG) concept is proposed in this paper. The structure is realized by inserting split-ring slots inside two reversely connected rectangular patches, which is known as a Split-Ring Slotted Electromagnetic Band Gap (SRS-EBG) structure. The bandgap properties of the EBG ...

A parametric analysis is performed for a wideband Archimedean spiral antenna in recognition of an emerging concept to integrate RFID along with several applications by using a single antenna. The antenna is fabricated using state-of-the-art inkjet printing technology on various commercially available paper substrates to provide the low-cost, flexible RF modules for the next generation ...

The research about the so-called complex beams, localized solutions of the Helmholtz wave equation, lead to the problem of finding the sources of such solutions, which may be formally expressed as a Dirac delta function of a complex argument. To investigate about the meaning of the Dirac delta distribution of complex argument, the Green’s function ...