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This paper present about the development of broadband tri-polarized antenna design that operates at frequencies of 2.4GHz for wireless MIMO communication system. Polarization diversity is one of the handy techniques to improve performance between base station and the user because it can reduce spatial correlation that can decrease system performance. The design process can be divided into three design...
An impedance modeling for a unit cell of the circular loop and square loop FSS structure is presented in this paper. The unit cell of the circular loop and square loop FSS are designed and simulated using the CST Microwave Studio software at 2.4 GHz based on industrial, scientific and medical bands (ISM). The design FSS structure consists of FSS structures placed on the FR4 and glass. The reflection...
Equivalent Circuit (EC) method gives a simple alternative method in Frequency Selective Surface (FSS) analyses which are useful for quickly predicting the characteristic of FSS. An impedance modeling of the Equivalent Circuit (EC) for a unit cell of the square loop FSS structure is presented in this paper. The unit cell of the square loop FSS is designed and simulated using the CST Microwave Studio...
Equivalent Circuit (EC) method gives a simple alternative method in FSS analyses which are useful for quickly predicting the characteristic of FSS. Impedance of the EC for a unit cell of the design Frequency Selective Surface (FSS) structure is investigated in this paper. The unit cell of the design FSS structure consists of FSS structures placed on the FR4, glass and hybrid (FR4+glass). The square,...
This paper presented an impedance modeling of the Equivalent Circuit (EC) for a unit cell of the square loop Frequency Selective Surface (FSS) structure. The unit cell of the square loop FSS is designed and simulated using the CST Microwave Studio software at 2.4 GHz based on industrial, scientific and medical bands (ISM) standard. The square loop FSS is simulated without FSS, with square FSS and...
This paper proposed the dual band printed omnidirectional antenna for RFID applications at 2.45GHz. This antenna is made up from the double U-stubs and meander collinear structure. The antenna is based on the microstrip type of antenna. The return loss of the proposed antenna at 2.45GHz is −10.61dB and the bandwidth is 122MHz. The gain that has been achieved for this proposed antenna is 3.798dB.
The proposed antenna is designed to overcome the demand in dual band issues. The basic shape structures of antenna are designed at frequency 2.4 GHz based on radiating structure 5 and 5.2 GHz based on radiating structure 3. Then, the changes on the position of radiating structure 3 have been carried out to investigate the effect for dual band. The coplanar waveguide technique is used to design the...
In this paper, presented an analysis and designed structure for Ultra-Wide Band (UWB) band pass filter that was carried out using a composite microstrip line with −10 dB and fractional bandwidth of more than 92%. This designed of band pass filter is suitable for ultra-wide band application system. The proposed filter was designed based on 7th order Chebeyshev with 0.5 dB ripple which operate between...
In this paper, presented an array of 2 × 2 UWB Bowtie antennas for Ultra Wide Band (UWB) mobile communication is being proposed. The antenna designs have been simulated using CST Microwave Studio. The antenna covers the UWB spectrum from 4.0 to 10.6 GHz, and had a return loss below than 10 dB throughout the entire band. A compact antenna area of 56.4 × 76.0 mm2 is obtained. The material used is FR-4...
This paper describes the design of wideband low noise amplifier (LNA) for mobile software defined radio (SDR) application which targeted to be applied in two-way communication mobile system architecture. The technical specification was deduced from the TIA-603C standard receiver system sensitivity and intermodulation. The proposed LNA exhibit low power consumption and adopts a negative feedback wideband...
This paper discussed the study on the circular polarized patch antenna by using double circle slot technique in single patch and X-polarized patch antenna. The operating frequency for the proposed antenna is 2.4GHz with 29.86MHz of bandwidth and return loss is −34.85dB. The antenna had been designed and simulated using CST Microwave Studio simulation software. The circular polarization (CP) operation...
An X-Polarization array microstrip patch antenna for WiMAX application is introduced in this paper. The array antenna operates at WiMAX frequency of 3.55 GHz. The substrate used is FR-4 with the thickness of 1.6 mm, relative permittivity of 4.5 and loss tangent of 0.019. The antenna use parallel feeding network to feed all the eight elements with coaxial port. The array has gain of 6 dBi, and directivity...
In this paper, the meander line antenna (MLA) have been designed to operate at 2.4-GHz for WLAN application. Two different designs of meander line antenna are investigated, without conductor line and with conductor line. Microwave Office software is used for simulation designed process. The antenna is fabricated on a double-sided FR-4 printed circuit board using an etching technique. Then the design...
This paper presented a simple polarization diversity technique that used in MIMO system. The polarization diversity is achieve by manipulated the antenna polarization between horizontal and vertical plane. The measurements based on receive power in line of sight (LOS) environment. Different types of polarization have been done and all results will be shown and discuss.
In these paper two types of design 4 times 4 Butler Matrix is design and fabricated on FR-4 board. The design specification is at 2.4 GHz for both of its. The circular bend technique is used. Investigation is about design of compact and usual Butler Matrix. The investigation scope includes the length and width effect of the design. The simulation and fabrication results will be compared and discussed.
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