This work proposes a modified circular fractal antenna array for multiband applications, including WLAN (5.15–5.85 GHz), C-band applications (3.8–4.4 and X-band satellite communication (7.1–7.76 GHz). High Frequency Structure Simulator (HFSS) is used to simulate the antenna. The substrate material FR4 epoxy, which has 4.4 relative permittivity 1.6 mm of thickness. It discovered that only covers...

A Microstrip Conformal Hexagonal Slot Patch Antenna fed by 50Ω microstrip line for various applications is presented in this paper. The strip loaded proposed antenna is fed through microstrip line to achieve proper impedance matching. Simulated results on High Frequency Structure Simulator software version 13 (HFSS 13) and CST10 are compared for FR4 – epoxiy substrate at different central angle...

A crucial issue in the next-generation satellite-based communication systems is the satellite on-board reallocation of information which requires digital flexible frequency-band reallocation (FBR) networks. This paper introduces a new class of flexible FBR networks based on variable oversampled complex-modulated filter banks (FBs). The new class can outperform the previously existing ones when ...

A Slotted microstrip patch antenna for Ku band is designed and thoroughly simulated in this paper. The designed antenna is worked at Resonant frequency of 14.25 GHz in Ku band and that can be used in Satellite Communication for Satellite Tv, DBS services,satellite tracking etc. It is shown that the simulated results are in acceptable agreement. More importantly, it is also shown that the micros...

A Dual band reconfigurable microstrip antenna with frequency diversity for satellite communication is proposed. In this paper a reconfigurable antenna with stacked structure is used. The two patches are arranged by two substrates i.e.. one R04003 dielectric substrate and another Rohacell Foam substrate with the dielectric constant 1.04 and loss tangent 0.0027. By varying the height of foam subs...

This paper presents a novel electrical polarization tracking method for mobile satellite communication systems that use linear polarization. It consists of two main technologies; the first estimates the mobile station antenna’s relative polarization angle against that of the satellite’s onboard antenna, the second forms counter polarization against the estimated value. We use a Ku-band communic...

Numerous studies conducted as part of the Tropical Rainfall Measurement Mission (TRMM) program have demonstrated the benefits of space-borne precipitation measurements. The NASA Global Precipitation Mission (GPM) is an outgrowth of TRMM that will provide improved precipitation measurements and extend those measurements to higher latitudes. GPM satellite will carry a microwave imager coupled wit...

This paper presents a low-profile user-terminal antenna for mobile bi-directional Ka-band satellite communication networks for emergency scenarios. We have devised an antenna with a circularly polarised radiation pattern and dual-band capability, which addresses a hybrid tracking. The principle of operation of a rectangular antenna panel applying a dual-band partially reflective surface (PRS) o...

In this paper, an FPGA based FIR filter for Satellite Application is presented. The implementation is based on Factored Canonic signed digit (FCSD) which eliminates the use of embedded multipliers. The FIR filter has been implemented using Equiripple on an FPGA. In Equiripple, the ripples are distributed more evenly over pass band and stop band which results in a better approximation of desired...