High Frequency Compact Microstrip Low Pass Filter

The purpose of this work is to discuss the design and analysis of a low pass filter. The research of a low pass filter with a cut-off frequency of 11.45GHz and an area of 13x6.3mm2 is proposed in this paper. Initially, low pass prototype filter was designed with ground layer. The proposed low pass filter is miniature and low cost because it is mounted on FR4 substrate. The FR4 substrate has thickness of 1.55mm. By using three main stubs that are placed symmetrically around X and Y axis is obtained. The cutoff frequency could be changed by tuning filter’s dimensions. The simulations with this design are simulated using Sonnet software and simulation results are reported

Design of Microstrip Coupledline Bandpass Filter

Microstrip Bandpass Filter simulations are included in this project paper. It has a graph, a design, a top view, and a 3D projection. The Coupled-Line Microstrip Filter is built of FR-4 material with a permittivity of 4.4 and is designed for a center frequency of 2.4 GHz. The ground is 1.55mm thick, and the air is 11mm thick. 50 ohms is the characteristic impedance. This filter is attached to the two ports and is made up of parallel-coupled lines linking the two ports. All of the dimensions have been put down. S11 values should be less than -10dB, while S12 values should be more than -2dB. The filter gives an insertion of -1.7 dB, return loss of -23 dB, and bandwidth of 1.5 GHz. Designed Microstrip Coupled Line Bandpass Filter can be used for wireless and high-frequency applications. All the design and simulations of this filter are done using Sonnet Suites Software

Circular patch antenna with circular and rectangular slots

The microstrip patch antenna which is a type of antenna manufactured and measured to operate at the frequency of 9.93 GHz. The results of S11 simulation and measurement are in good agreement. The designed antenna has one circular slot in the center and two rectangular slots with adding double wings to the right and left sides of the antenna differently from reference antenna. These transactions have been made to get more gain. The S11 and antenna gain simulations were measured as -11.64 dB and 10.15 dB respectively. Antenna was designed for SHF-10 GHz ban

H-Shape of a trapezoidal neck High-Gain Patch Antenna

In this study, a microstrip antenna simulated between 1-11 GHz is manufactured and presented results with measurements. Then simulation results are presented. -S11- simulation and measurement results almost show perfect agreement. S11, the input reflection coefficient parameter has the value of -31.24 dB at the center frequency and the resonance frequency has the gain value of 11.21 dBi at 8.24 Ghz. Especially, the antenna has been exclusive with Slits and trapezoid centre piece

Microstrip patch antenna array:improved slitted rectangular design

In this study, a recessed rectangular microstrip patch antenna which is for C band, working at 4.08GHz frequency with less than -18dB SIX has been designed simulated, built and tested. Microstrip antennas have the advantage of easy and cheap production process. This study aims that achieving maximum gain while changing the design parameters as lengths of dimensions and recessed parts. As a simulation result, electric field radiation pattern shows more than 10dB gain. There is a comment about the differences of simulation and fabrication results and further improvement detailed were discusse

Inset fed patch antenna with five slots

In the following paper, a rectangular microstrip patch antenna with two main kinds of slots which are rectangular slots that are more frequently used and L shaped slots are designed, simulated, built and tested. Furthermore, a circular-shaped input feed with 1 mm diameter was chosen to feed the antenna from the edge of the inset-fed part of the antenna. Moreover, an RT6002 substrate with 0.76 mm thickness was the raw material of the antenna. Eventually; this design was capable of acheiving a gain of 8.2 dB with a remarkable value of-15.2 dB for S11 in the manufactured antenna, for a Ku band frequency of 14.4 GHz as Vector Network Analyzer measures. As this design has a Ku band frequency, it could be used for satellite communications such as NASA's Tracking Data Relay Satellite, backhauls broadcasting, and vehicle speed detectio