i-manager's Journal on Embedded Systems (JES)


Volume 5 Issue 3 August - October 2016

Research Paper

Design of Microwave Bandstop Filter with Arbitrary Reference Impedances

Anuj Kumar Mishra* , Arvind Kumar Pandey**, R. K. Chauhan***
* PG Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
** Research Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
*** Associate Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Mishra, A, K, Pandey, A, K and Chauhan, R.K. (2016). Design of Microwave Bandstop Filter with Arbitrary Reference Impedances. i-manager's Journal on Embedded Systems, 5(3), 1-5. https://doi.org/10.26634/jes.5.3.13462

Abstract

This paper has demonstrated a coupling matrix based method used to synthesize a bandstop filter. This method is independent of change in source and load impedances. There are different approaches to implement bandstop filter among which frequency transformation method is more advantageous in terms of complexity. In this method, a bandstop filter is synthesized by frequency transformation from lowpass prototype to bandstop filter. MATLAB code is developed for frequency transformation and coupling matrix. The filter is designed on RT Duroid substrate with relative dielectric constant of 10.8 and thickness of 1.27 mm. The filter is designed and simulated on HFSS and response found is in good agreement with the response found from the mathematical model.

Research Paper

Resonator and Stub Loaded Reconfigurable Notched Filter for Ultra-Wideband Applications

Rupam Srivastava* , Arvind Kumar Pandey**, R. K. Chauhan***
* PG Scholar,Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
** Research Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
*** Associate Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Srivastava, R, Pandey, A, K and Chauhan, R.K. (2016). Resonator and Stub Loaded Reconfigurable Notched Filter for Ultra-Wideband Applications. i-manager's Journal on Embedded Systems, 5(3), 6-10. https://doi.org/10.26634/jes.5.3.13463

Abstract

In this paper, a reconfigurable notched filter for ultra-wideband applications is presented. The reconfigurable notch frequencies are created to reject the interferences at these frequencies, which occur in the UWB bandpass response. The ultra-wideband bandpass filter uses multiple mode resonator, which is formed by using stepped impedance resonator. The resonators are loaded in the structure in order to reject the interferences at notch frequencies. The Cshaped resonator is reconfigured to inverted L-shaped resonator with the help of switch used in the structure and both are responsible for different notch frequencies in the different state of the switch. Two identical open stubs offer another notch frequency. The notch frequencies can be changed by controlling the length of the resonators. The switches are used in the structure to make the notches reconfigurable, which provide the flexibility to use the structure in the presence or absence of the interference.

Research Paper

Synthesis and Design of Microwave Bandpass Filter using Coupling Matrix

Saurabh Kumar Pandey* , Arvind Kumar Pandey**, R. K. Chauhan***
* PG Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India
** Research Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
*** Associate Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Pandey,S,K., Pandey,A,K., and Chauhan, R.K. (2016). Synthesis and Design of Microwave Bandpass Filter using Coupling Matrix. i-manager's Journal on Embedded Systems, 5(3), 11-16. https://doi.org/10.26634/jes.5.3.13464

Abstract

In this paper, synthesis of bandpass filter is performed by using coupling matrix based method. To design a bandpass filter, the standard lowpass to bandpass frequency transformation has been used. Bandpass filter is implemented by using coupled microstrip resonators with both electric and magnetic coupling. The frequency transformation is performed and verified in MATLAB. The layout of filter obtained from coupling matrix is further reduced in size by using some topologies of filter designing. The proposed filter is designed and simulated in ANSYS HFSS software and RT_Duroid is used as dielectric material with substrate thickness of 1.27 mm. The filter response is found in good agreement with the response found from the mathematical model.

Research Paper

A Bandpass-Bandstop Reconfigurable Filter for Wireless Applications

Tulika Sinha* , Arvind Kumar Pandey**, R. K. Chauhan***
* PG Scholar,Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
** Research Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
*** Associate Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Sinha, T, Pandey, A, K and Chauhan, R.K. (2016). A Bandpass-Bandstop Reconfigurable Filter for Wireless Applications. i-manager's Journal on Embedded Systems, 5(3), 17-20. https://doi.org/10.26634/jes.5.3.13465

Abstract

In this paper, a novel filter is designed on Taconic RF-35 substrate using two open stubs centrally loaded to stepped impedance resonators (OSL-SIRs). This filter is reconfigured from bandpass-to-bandstop mode using pin diodes. The bandpass filter operates in the range of 2.23-2.59 GHz at 2.41 GHz center frequency and fractional bandwidth of 0.15. On reconfiguration to bandstop mode, the rejection frequencies exist between 2.45-2.47 GHz at 2.46 GHz center frequency. Thus, a single filter can easily switch to two operating modes and adapt itself in spectral interference environment. This filter can be used to isolate WLAN application from other wireless applications.

Research Paper

Compact Dual-Band Bandpass Filter Using Hook-Type Resonator

Alok Kumar Gupta* , Rajan Mishra**
*PG Scholar, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
**Assistant Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Gupta, A, K and Mishra, R. (2016). Compact Dual-Band Bandpass Filter Using Hook-Type Resonator. i-manager's Journal on Embedded Systems, 5(3), 21-24. https://doi.org/10.26634/jes.5.3.13466

Abstract

This paper presents a dual-band bandpass filter designed of λ/4 split type resonator. A hook-type coupled line structure is used to create a stop band in a wide single bandpass filter. This structure provides external coupling and creates two bands at different frequencies. To justify the idea, the result of dual bandpass filter with two center frequencies at 2.4 GHz and 3.5 GHz are shown. This filter has specific applications with Wi-Max communication. There are two reflection zeros in each pass band and three Transmission zeros out of band for better out of band rejecton.

Research Paper

Dispenser Machine for Beverages with User Preferences from HMI

Asmita P. Bodhale* , J.S. Kulkarni**
* PG Student, Department of Electronics and Telecommunication, Pimpri Chinchwad College of Engineering, Maharashtra, India.
** Assistant Professor, Department of Electronics and Telecommunication, Pimpri Chinchwad College of Engineering, Maharashtra, India.
Bodhale,A.P., and Kulkarni, J.S. (2016). Dispenser Machine for Beverages with User Preferences from HMI. i-manager's Journal on Embedded Systems, 5(3), 25-30. https://doi.org/10.26634/jes.5.3.13467

Abstract

The scope of this paper is to design an entire control for the Beverage Machine. This machine is able to dispense natural water, cool water, cold water, hot water, and aerated water. Also it is capable to produce many beverages like juice and soft drinks using capsules. Dispenser machine operates with customer interaction, i.e., whenever customers press the main dispenser button and option key to select natural water, cool water, cold water, hot water or other beverages like juice and soft drinks through UI like pantry Control. For dispensing, the beverages which are prepared after capsule identification with barcode are mounted on beverage capsule. The user interface board will contain the illuminated display, microcontroller and drivers to drive the display. Theory of operation is that the user will interact through commands. The command will be interpreted and sent to the microcontroller at the Appliance Control Unit (ACU) for processing. The user interface should handle the entire user interaction. The user interface will interpret the commands and determine the beverage dispense mode, the temperature and time length for a mode, and then send it to the appliance manager (Appliance Control Unit) to perform operations like handling of water filling and dispensing beverage preparation in the system.

Research Paper

Design and Development of Auto Truck Loading System

Ankit Singh* , Vijay Savani**, Deepak Sharma***
* M.Tech Student, Department of Electronics and Communication Engineering, Nirma University, Ahmedabad, India.
** Assistant Professor, Department of Electronics and Communication Engineering, Nirma University, Ahmedabad, India.
*** Dy. Manager (Systems), J.K. Lakshmi Cement Ltd., Village Moti Bhoyan, Kalol, India.
Singh,A., Savani,V., and Sharma,D. (2016). Design and Development of Auto Truck Loading System. i-manager's Journal on Embedded Systems, 5(3), 31-38. https://doi.org/10.26634/jes.5.3.13468

Abstract

In the 21st century, IoT (Internet of Things) is the most emerging and trending field, similarly IIoT (Industrial Internet of Things) is also an equivalent emerging field among various industries. This paper presents the implementation of the proposed auto truck loading system. The system is used to increase the handling efficiency and production rate of packing plants at varied cement industry through the development of two systems. The first system, Auto Cement Bag Diverter also termed as Variable Distributing Machine variably distributes a number of bags between two conveyors as per the user requirement. The second system, Auto Truck Loading System gets the benefit of higher reaction time due to VDM as bags will arrive at it at certain gaps and it will be easy to handle at such fast pace (3200 bags/hr). Due to VDM, the roto-packer speed of production can be increased considerably and the handle at Loading system will be efficient than the previous loading system. Also, multiple stations can be operated at a time with the double speed of production. VDM will satisfy on social, environmental, economical basis, and overall a sustainable development. The developed system is implemented and installed in cement plant. The significant improvement in terms of the production rate of roto packer and per hour production (in rupees) has been observed.