Wireless communication has been developed these years. And, many digital communication products have been brought into our life, and many wireless communication services are integrated into a communication product. A desired antenna for modern wireless communications is needed to cover many bands, such as DVB band (530 ~ 860MHz) [1-3], GSM band (890 ~ 960MHz), DCS band (1710 ~ 1880MHz) [4-5], P...

Theoretical, software-computed and experimental evaluations of the exposure levels to electromagnetic fields generated by GSM 900, GSM 1800 and 3G base stations in urban areas, including determination of the minimum safe distances for population and occupational exposure, are presented. Using the software package SPECTRAemc with the P.1546 propagation wave model and a topographic digital map, t...

A planar UWB antenna with added GSM 1800/WMTS and UMTS bands is presented. A CPW-fed circular patch is used to obtain wideband characteristic covering the UWB range. A novel slot formed by merging the alternate sides of a hexagon with isosceles triangles is inserted in the patch to obtain dual-band operation with the lower band suitable for GSM 1800 operation. By inserting a bent monopole in th...

background: the rapidly increasing use of mobile phones has led to public concerns about possible health effects of these popular communication devices. this study is an attempt to investigate the effects of radiofrequency (rf) radiation produced by gsm mobile phones on the insulin release in rats. methods: forty two female adult sprague dawley rats were randomly divided into 4 groups. group1 w...

We investigated the effects of mobile phone radiation on cerebral glucose metabolism using high-resolution positron emission tomography (PET) with the (18)F-deoxyglucose (FDG) tracer. A long half-life (109 minutes) of the (18)F isotope allowed a long, natural exposure condition outside the PET scanner. Thirteen young right-handed male subjects were exposed to a pulse-modulated 902.4 MHz Global ...

Increasing development of mobile communication infrastructure while enhancing availability of the technology raises concerns among the public, who see more cell towers erected each day, about possible health effects of electromagnetic radiations. Thereon, a survey of radio-frequency radiation from 60 GSM base stations was carried out in Tehran, Iran at several places mostly located in major med...

Simulated design and analysis of a new simple multi-band microstrip antenna is presented in this paper. An introduced design covers the requisite bandwidth for GSM/DCS/PCS/UMTS cellular phone system and IEEE Wireless Local Area Network (WLAN) standards: 802.11n, b/g (Wi-Fi), Bluetooth. Light weight, low-cost, plain configuration and multi-band functionality are the advantages. All results of th...

The design and development of a proximity fed dualband microstrip patch antenna based on David fractal geometry are presented. David fractal microstrip antenna offers good performance in the 1.754 1.816 GHz and 3.37 3.415 GHz bands and is suitable for GSM 1800, WiMAX applications. The use of David fractal geometry offers miniaturization of the antenna structure. The proposed first iteration fra...

Abstract Introduction Systemic treatment for breast cancer (BC) may result in genitourinary syndrome of menopause (GSM) up to 70% postmenopausal BC survivors. Though systemic estrogen therapy is usually avoided these patients, vaginal be prescribed treat GSM symptoms. However, few eligible patients with and history are due concern recurrence. Objective Our objective was assess the recurrence ra...

background: as the use of mobile phones is increasing, public concern about the harmful effects of radiation emitted by these devices is also growing. in addition, protection questions and biological effects are among growing concerns which have remained largely unanswered. stem cells are useful models to assess the effects of radiofrequency electromagnetic fields (rf-emf) on other cell lines. ...