GSM frequency bands

About: GSM frequency bands is a research topic. Over the lifetime, 559 publications have been published within this topic receiving 5067 citations.

A Novel e-textile Integrated Wideband Monopole Antenna for Body-worn Energy Harvesting Systems

Abstract: A novel e-textile integrated wideband monopole antenna designed for body-worn energy harvesting systems is presented. The proposed antenna is constructed with silver coated conductive threads woven into cotton substrate, and the operation bandwidth of which covers GSM bands (range 870.4-915 MHz and 1.7-1.9 GHz), LTE bands (range 0.79–0.96 GHz; 1.71–2.17 GHz; and 2.5–2.69 GHz) and Wi-Fi frequencies (2.4 and 3.6 GHz).

Timing method for searching GSM frequency correcting channel in CDMA 2000 system

Abstract: A timing method for search for GSM frequency correction channels from CDMA2000 system includes: setting a search window in every CDMA2000 service frame to search for small community FCCH adjacent to GSM, if it is successful, the search is finished, if not, the search is restarted. When width of search window d is the same, the needed numbers of the search windows are the least, influence to system performance is the smallest and needed search time is the shortest by this inverted timing method.

Perencanaan Ulang Site Outdoor Coverage System Jaringan Radio GSM 900 dan 1800 di Semarang

Abstract: Global System for Mobile Communication (GSM) is designed to provide solutions for high increasing number of subscribers of mobile communication services, while the frequency resources is limited GSM is a digital cellular communication technology with a coverage service area is divided into small areas called cells, and each cell is handled by a site To anticipate the growth of users number GSM system requires site re-planning that consist of three aspects, namely capacity, coverage and quality With this site re-planning the number of site eficiency is expected This final project has made a re-planning simulation for an outdoor coverage site system of GSM radio network 900 and 1800 in Semarang city, which has area of 37367 km2 and consists of 16 districts and 177 villages, so it can serve customers until 2014 The first step in this final project is collecting data population and digital map of Semarang to be processed to obtain the estimated total population of Semarang in 2014 and the distribution of area types for every district The second stage is analysis the RF Planning nominal which consists of analysis based on coverage requirement and traffic requirement The coverage requirement analysis is based on link budget calculation and the cell radius calculation using Okumura-Hatta and Walfish-Ikegami outdoor propagation model Traffic requirement analysis is based on traffic necessity and capacity of the site The result of both analysis are then being compared and the biggest nominal RF planning is selected as the basis for next calculations to obtain a recommendation of the radio network design in Semarang The third stage is site placement analysis The used site in this design is the reuse partition sectorized system with a dual band frequency, in case of over traffic necessity, the optimization is done by using the technique of cell splitting From that re-planning simulation for GSM 900 and 1800 radio network outdoor site coverage system in Semarang,can be known the needed number of sites to serve the customers until the year 2014 with a teledensity of 30%, ie 91 sites with 250 Global System for Mobile Communication (GSM) sectoral cells and 230 Digital Cellular System (DCS) sectoral cells with the highest traffic for the micro cells occurred at sector 3, Sendangguwo village, District Tembalang that is equal to 13236 Erlang, while the highest traffic for the macro cells occurred in Sector 3 Bamban Kerep village,District Ngaliyan which amounted to 66, 24 E

Defected Ground Structured Wideband Antenna for RF Energy Harvesting

Abstract: This work addresses the design of dual side printed antenna using defected ground structure (DGS) for RF energy harvesting system. Proposed antenna acquires RF energy from all the available directions. This system harvests the energy between 1GHz to 5GHz. The antenna shows better directivity and return loss response at the major operating bands such as 1.9GHz (GSM Bands), 2.4GHz-2.6GHz (Bluetooth/WLAN), 3.2GHz (Third generation), and 3.5GHz-3.6GHz (for LTE/4G). The overall layout of the antenna is 41 mm (L) x 45 mm (W). The proposed antenna maintains a compact antenna size and wideband frequency response to harvest the RF power when the position of the source is not known.

Planar Multi-broadband Antenna for LTE/5G/GPS/GSM/UMTS and WLAN/WiMAX Wireless Applications

Abstract: In this paper, a simple planar multiband antenna design for wireless handsets is introduced. The proposed antenna can support four broad frequency bands, covering LTE/WWAN/GNSS/WiMAX/WLAN and several bands that are suggested for 5G systems. The proposed antenna design consists of a folded driven monopole strip, and a parasitic ground connected to the main ground with several etched slots on the ground plane. The parasitic ground in conjunction with the driven monopole slot helps to cover the lower band, including LTE700 and GSM bands, while the slots at the parasitic ground help to fully cover and tune other desired bands. The antenna is printed on a low-cost ultra-thin FR-4 substrate with a compact size of 135 mm $$\times$$ 60 mm $$\times$$ 0.5 mm, suitable for the state-of-the-art wireless handsets, such as smart-phones. The design procedure and measurement results of the antenna have been presented and discussed.