Determinants of the continuous use of E-GOV information systems and services in Morocco : Proposing an integrative model

The digital transformation of public administration is a strategic project that has been initiated by Morocco several years ago. It is a very ambitious project that is of great importance for the development and growth of the country. Yet, its success depends highly on the involvement and participation of citizens. However, in Morocco, there is a lack of comprehensive information regarding the adoption and usage of these solutions, as well as the e-gov satisfaction levels among citizens. This research aligns with theories of information system usage behavior in a post-adoption context and focuses on the user's perspective, emphasizing the importance of studying the peculiarities of their usage behavior in order to promote the success of the systems and solutions offered to them. After addressing the situation of e-gov services in Morocco and presenting the theoretical basis of the research, this article proposes, in its third part, an integrative model composed of a fusion between several theories with the objective to study the continuous use behavior of e-gov services and systems in Morocco. This model includes motivation and satisfaction constructs to explain usage continuance. The proposed model will be the starting point of an empirical study whose goal is to explore all the assumed relationships in the model and to analyze them

Design Of Compact Ultra Wideband Antenna For Microwave Medical Imaging Application

A compact ultra wideband (UWB) antenna for operation at 6 GHz intended for microwave medical imaging (MMI) application is proposed. The microstrip patch antenna (MPA) was design in hexagon shape which is contain H-slot at the centre top of the patch and a slot at the ground. Those slots method is utilised to enhance the operating bandwidth as well as minimising the antenna’s impedance mismatch caused by its proximity to material. Results shows that, the implementation of slot on the patch has profoundly enhance the bandwidth (BW) of the antenna to 503.54 MHz. Measurement of fabricated antenna produce significant result in term of producing wide bandwidth of 520 MHz, with slightly shifting on operating frequency. Therefore, it has been proved that the required performance of UWB antenna has been achieved successfully. © 2019 Institute of Advanced Engineering and Science. All rights reserved

Selectable Multiband Isolation Of Single Pole Double Throw Switch Using Transmission Line Stub Resonator For Wimax And Lte Applications

This paper presents a selectable multiband isolation of Single Pole Double Throw (SPDT) switch with switchable transmission line stub resonators for applications of WiMAX and LTE in 2.3 and 3.5 GHz bands. Two SPDT switches are presented. (Design 2) either allows selecting only one band while unselecting the other or selecting both of them. However, (Design 1) does not allow so. The transmission line stub resonator used in this design is an open stub resonator with quarter wave of the electrical length. By using a simple mathematical model, the theory of the transmission line stub resonator was discussed where it can be cascaded and resonated at center frequencies of 2.3 and 3.5 GHz. Moreover, the cascaded transmission line stub resonators can be reconfigured between all-pass and band-stop responses using discrete PIN diodes. The key advantage of the proposed SPDT with switchable transmission line stub resonators is a multiband high isolation with a minimum number of PIN diodes. Therefore, the simulated and measured results showed the followings: less than 3 dB of insertion loss, greater than 10 dB of return loss and higher than 30 dB of multiband isolation in 2.3 and 3.5 GHz bands

Fixed And Selectable Multiband Isolation Of Double Pole Double Throw Switch Using Transmission Line Stub Resonators For Wimax And Lte

A novel selectable multiband isolation of Double Pole Double Throw (DPDT) switch with switchable transmission line stub resonators has been proposed for applications of WiMAX and LTE in 2.3 and 3.5 GHz bands. In this paper, two DPDT switch designs are proposed; the first design is a fixed DPDT switch, and the second is a selectable DPDT switch. The second design allows selecting only one band and unselecting the other or selecting both of them. However, the first design does not allow so. The transmission line stub resonator used in this design is an open stub resonator with quarter wave of the electrical length. By using a simple mathematical model, the theory of the transmission line stub resonator was discussed where it can be cascaded and resonated at center frequencies of 2.3 and 3.5 GHz. Moreover, the cascaded transmission line stub resonators can be reconfigured between allpass and bandstop responses using discrete PIN diodes. The key advantage of the proposed DPDT with switchable transmission line stub resonators is a multiband high isolation with minimum number of PIN diodes. Therefore, the simulated and measured results showed less than 3 dB of insertion loss, greater than 10 dB of return loss and higher than 30 dB of multiband isolation in 2.3 and 3.5 GHz bands

Design Comparison Of Rf Spdt Switch With Switchable Resonators For Wimax And Lte In 3.5 Ghz Band

In this paper, a design comparison of RF SPDT switch with switchable resonators for WiMAX and LTE in 3.5 GHz was reported and discussed. Four SPDT switch designs were compared to each other in terms of isolation, return loss, insertion loss, number of utilised PIN diodes, and absorptive feature. The first SPDT switch design, Design 1, used a two-cascaded switchable transmission line stub resonators. The second, Design 2, utilised a two-cascaded switchable radial stub resonators. The third, Design 3, was based on three-cascaded switchable parallel coupled lines and a single radial stub resonator. Design 4 was based on three-cascaded switchable rings and a single radial stub resonator. As a result, Design 4 showed a very good simulated and measured isolation, return loss and insertion loss at the operation frequency of 3.5 GHz. Besides, Design 4 resulted with the highest isolation with an absorptive feature

A Coupled-Line Balun For Ultra-Wideband Single-Balanced Diode Mixer

A multi-section coupled-line balun design for an ultra-wideband diode mixer is presented in this paper. The multi-section coupled-line balun was used to interface with the diode mixer in which it can deliver a good impedance matching between the diode mixer and input/output ports. The mixer design operates with a Local Oscillator (LO) power level of 10 dBm, Radio Frequency (RF) power level of -20 dBm and Intermediate Frequency (IF) of 100 MHz with the balun characteristic of 180° phase shift over UWB frequency (3.1 to 10.6 GHz), the mixer design demonstrated a good conversion loss of -8 to -16 dB over the frequency range from 3.1 to 10.6 GHz. Therefore, the proposed multi-section coupled-line balun for application of UWB mixer showed a good isolation between the mixer’s port

Design Of SPDT Switch With Transmission Line Stub Resonator For WiMAX And LTE In 3.5 Ghz Band

A Single Pole Double Throw (SPDT) switch design with transmission line stub resonator for application of WiMAX and LTE in 3.5 GHz band is proposed in this paper. The transmission line stub resonator is an open stub with quarter wave of the electrical length. A PIN diode was used in the resonator to reconfigure the resonator between bandstop and allpass responses. The implementation of the transmission line stub resonators in SPDT switch design was discussed together with the circuit operation. The result showed that the isolation of SPDT switch with transmission line stub resonator was higher than 30 dB in the 3.5 GHz band compared to the conventional design and it was verified with measurement results

Design Of Compact Filtenna Based On Capacitor Loaded Square Ring Resonator For Wireless Applications

This paper proposes and demonstrates a compact integrated filtering antenna built on a square ring resonator coupled with a capacitors loaded microstrip line filter. A microstrip filter module is connected to feeding line of the conventional patch without adding extra space. Thus, the combined configuration possesses radiating and filtering functions simultaneously. The proposed filtenna has a fractional bandwidth (FBW) of 3% at center frequency 2.4 GHz with 2.5 dB of maximum gain. The obtained result shows that the proposed design shows good stopband gain rejection, good selectivity at band edges, and smooth passband gain. Furthermore, the introduced filtenna has advantages of a small size and a simple structure, which makes it ideal for interconnection with different wearable devices operating within 2.4 GHz wireless system range

Design of filter integrated SPDT switch using capacitor loaded ring resonator with high isolation

A reconfigurable filter integrated single-pole double-throw (SPDT) switch (FIS) based on capacitor loaded ring resonators is presented in this paper. The design incorporates two PIN diodes between two symmetric square ring resonators. The ring resonators can be switched between all stop and bandpass responses, by adjusting the state of the PIN diodes, allowing the corresponding signal path to be in OFF-state with high isolation or ON-state with bandpass filter response. For demonstration, filtering switch was fabricated and measured for 2.4 GHz applications. The measurement results featured an ON-state low insertion loss of −2.1 dB and port-to-port isolation of −52 dB at the band of interest, and good consistency is achieved between simulated and measured result