Showing papers by "Madhur Deo Upadhayay published in 2016"

Design and Simulation of a Zinc Oxide Thin Film Bulk Acoustic Resonator Filter for 2.6 GHz Band Applications

Abstract: This work presents the design and simulation of a zinc oxide based thin film bulk acoustic resonator (TFBAR) bandpass filter for 2.6 GHz band applications. Third and fifth-order filters in ladder topology are designed and compared. The third-order filter has an insertion loss of 1.62 dB and return loss of 18.97 dB with a bandwidth of 80 MHz whereas the fifth-order filter has insertion loss, return loss, and bandwidth of 2.85 dB, 25.28 dB, and 60 MHz, respectively. With a central frequency of 2.67 GHz, the designed filter has applications in the 2.6 GHz (2500–2690 MHz) band, which has been identified by the International Telecommunication Union as a global frequency band for mobile broadband services.

Design of notch antenna for 5 GHz high speed LAN

Abstract: This paper presents a novel design of a rectangular microstrip patch antenna with two rectangular notches for operation at 5 GHz frequency. The proposed antenna has patch of 14 mm length and 28 mm width, it is designed and simulated on FR4 substrate of permittivity 4.1 and thickness 1.5 mm, for operating frequency of 5 GHz. The return loss is 28dB at 5 GHz. The antenna can be used for IEEE802.11a wireless local area network (WLAN) applications.

Simulation and Analysis of Actuation Voltage of Electrostatically Actuated RF MEMS Cantilever and Fixed – Fixed Switches with Variable Beam Parameters

Abstract: Radio Frequency (RF) Microelectromechanical system (MEMS) switches are becoming more and more popular in the electronics industry. The main concern in using RF MEMS switch is its high actuation voltage. Thus the main focus in this paper is to obtain low actuation voltage. This paper presents the simulation and analysis of RF MEMS cantilever beam and Fixed – Fixed beam switches. RF MEMS switches simulated in this paper use electrostatic actuation method. Simulations were done using finite element modeling. Different designs and parameters such as gap between electrodes, beam thickness, beam length, and relative permittivity values of medium between electrodes were chosen for analyzing the deflection of beams for various actuation voltages. Perforations of different dimensions were made on both type of beams and the resulted deflections were studied. The simulation results show that the Cantilever and Fixed – Fixed beams follow approximately similar deflection pattern with Cantilever beam deflecting more for applied actuation voltage in all the studies.

Generation of OAM mode using radially oriented Circular Array

Abstract: In this paper, we first make a theoretical and numerical analysis of electromagnetic (EM) vertex wave, which carries rotating phase (helical) front and orbital angular momentum (OAM) Subsequently 8 elements rectangular inset feed incrementally phased Circular Array (CA) Antenna is simulated which can generate Orbital Angular Momentum beam at 10 GHz The simulated results verifies rotating phase with the result from the mathematical analysis

Slotted ground circular antenna for personal communication system (PCS) & broadcasting

Abstract: This paper presents a broadcasting antenna design operating at 2.4 GHz frequency. The proposed antenna is designed, simulated and fabricated on FR4 substrate of permittivity 4.1 and thickness 1.5 mm. The measured return loss is 17.5 dB at 2.4 GHz whereas the simulated return loss is 36.88 dB. Thus, the fabricated & simulated antenna are in good harmony. Also the cross polarization is less than −20 dB. This antenna can be used to broadcast on several type of wireless systems that we use in our day to day life like Amplitude modulation (AM), Frequency modulation (FM) radio, satellite telephony & Global Positioning System (GPS).