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.

Band-stop filter design based on split ring resonators loaded on the microstrip transmission line for GSM-900 and 2.4 GHz ISM band

Abstract: Split-ring resonator is a popular research topic in literature. As known, it may be used in the design of electromagnetic metamaterials. Additionally, these structures can be preferred in microwave filter devices. In this study, a band-stop filter was designed for GSM-900 and 2.4 GHz ISM band by using split-ring resonators. Two split-ring arrays (sizes of one of these arrays were larger than the other) were loaded on the transmission line and each array consisted of four identical rings. Thus, a dual-band pass filter was obtained and this filter covered the frequency of 0.91 (GSM) and 2.43 (ISM) GHz. Then, this proposed design was fabricated and measured. According to the measurement results, the fabricated structure operated at 0.93 GHz and 2.47. The experimental results were consistent with the simulation results. As a result, thanks to the proposed structure, two frequencies can be stopped at the same time. There is no need to design a different filter structure for each frequency.

Tri-Band Microstrip Monopole Antenna for Energy Harvesting

Abstract: This paper presents three resonant bands of microstrip monopole antenna for radio frequency energy harvesting applications. The proposed antenna has a good performance in GSM-900/1800 and GPS/UMTS bands. The rectifier circuit design consist of several rectifier branches to collect the largest amount of RF power, due to the non-linearity and the complex input impedance of the rectifying circuit, Therefore, an improved impedance matching technique is introduced which is aimed to improve the performance of the rectifier with a varying condition. The proposed antenna is printed on FR4 substrate with modified ground plane to achieve suitable impedance bandwidth. Two V shaped arms with optimized angle are integrated on the L shaped monopole radiator. Each arm is responsible for certain resonating frequency. The antenna operates at three frequency bands (GSM 900/1800, GPS and UMTS bands) with reflection coefficient below — 10 dB.

Dual-layer Microstrip Antenna Design for Wireless Communications

Abstract: The present work deal with the design of a triple band, dual layer Microstrip Patch Antenna. The frequencies of three bands are 0.9GHz, 1.798GHz, 2.402GHz. the S-parameter and the gain characteristics as well as radiation pattern are investigated. The proposed antenna is suggested to be used in a mobile phone handset that covers three frequency bands which include GSM 900 (889-960), GSM 1800 DCS 1800 (1710-1885), Bluetooth and Wi-Fi/WLAN (IEEE 802.11 b/g/n) ISM 2450 (Industrial, Scientific and Medical) (2400-2500). The proposed antenna shows return loss (RL) of -17.79dB at 0.9 GHz; -18.5 dB RL at 1.798 GHz; and -44.2 dB RL at 2.4 GHz which are encouraging results. Designing and simulation of the proposed antenna were based on CST software package. Finally enact three bandwidth are got and the antenna shows an encouraging results for WLAN applications.

Dual-band microstrip antenna for GSM applications

Abstract: Design of a simple dual-band GSM 900/1800 microstrip patch antenna with single feeding is presented The dual resonance was obtained by cutting a narrow slot in the patch near the radiating edge which influenced the patch modal currents Similar radiation characteristics in both bands were observed The calculated results were confirmed by measurements on the prototype