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This paper provides a method of compensating the boresight error which may be caused in a realized helical antenna. This technique is also applied in the present helical antenna array design in which three helical antenna elements are constructed and the boresight error is almost zero. Both of simulated and measured results are discussed.
A GPS and Miracast RFIC-on-chip antenna in 0.18 um CMOS 1p6M process is presented. The HFSS 3-D EM simulator is employed for design simulation. A printed 1.575GHz and 2.4GHz antenna has been realized by using the CMOS RFIC-on-chip. The measured VSWR is less than 2 from 1.575GHz and 2.4- to 2.483-GHz. This propose super quadric combo antenna in free space, electromagnetic coupling between super quadric...
The purpose of this paper is to evaluate the Specific Absorption Rate (SAR) distribution for tumour treatment when the electromagnetic field is emitted from a microwave ablation antenna operating in the 2.45 GHz. Firstly, the SAR distribution is simulated by CST Studio Suite, and the SAR measurement is carried out when the microwave antenna needle is inserted into a swine's liver. The microwave radiation...
An internal Quad-band monopole antenna with isolation area for CTIA 3.0 Talk Mode is designed and studied. The proposed antenna has isolation area for the head and hand phantoms following CTIA 3.0 Teat Plan and is located at the bottom of the ground plane in printed circuit board (PCB). The simulated impedance bandwidth covers the required bandwidth of the GSM900 (880–960 MHz), DCS (1710–1880 MHz),...
This paper presents a review of the current trend of terminal antenna design, which has been a focused part of modern antenna industry in last decade. Wideband, multiband and embedding characteristics of terminal antennas in different applications are the main features of this trend. Techniques often employed for these requirements are discussed. However, the relative issues for such a kind of design...
An analysis of the response of optically modulated scatterer (OMS) probes with a circular-interdigit structure photoconductive switch is presented. The theoretical analysis shows the response of OMS is determined by impedance of the photoconductive switch and antenna impedance of it. The calculations and measurements of these impedances and the relation between the impedance and response of OMS probe...
In this paper, we devote to investigate the electromagnetic (EM) radiation characteristics and radiation intensity of high power weather radar once extensively. We compare our field measurement with international specifications and an operating early-warning radar case study also made a contribution to those who are interested in the healthy effect of high power EM radiation. The measured data is...
The purpose of this research is to design a small antenna which is fabricated by a ceramic process and functions as a receiving antenna inside a DVB-H terminal. The present design is based on the concept of shorted L-type microstrip antenna to comply the requirement of electrically small size. High dielectric constant associated with ceramic process is able to make the antenna further smaller. Multilayer...
An UWB dipole antenna comprising of an arbitrary notched band function to prevent ISM band from interference is presented. The proposed dipole antenna demonstrates the UWB operation with an adjustable notched band and is designed on a commercial substrate FR4 having a thickness of 1.6 mm and 4.4 permittivity. Experimental results verify that the proposed antenna achieves a bandwidth covering from...
A novel internal monopole antenna suitable for applications of GSM/DCS/PCS tri-band antenna for slider mobile phones is constructed. The proposed antenna can be embedded into phone housing as an internal antenna and it design for manufacturing. The antenna is located at the bottom of the edge of the ground plane in main board and fed by a coaxial cable for the special mechanical placements. The obtained...
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