Layer Microstrip Patch Antenna Research Articles

Compact Wideband Single Layer Microstrip patch Antenna by Using T shape and Rectangular slot for C band Application and stable radiation patterns

Compact Wideband Single Layer Microstrip patch Antenna by Using T shape and Rectangular slot for C band Application and stable radiation patterns

Probe Feed Rectangular Microstrip Patch Antenna for1.5 GHz WLAN Application

In this paper the design of coaxial probe feed one layer microstrip patch antenna (MSA) . for 1.433 GHz WLAN application is presented, The impedance equivalent and the radiation physiognomies of this proposed assembly are planned and analyzed. by CPU Simulation Knowledge (CST) Microwave Studio. which is a commercially obtainable electromagnetic simulant founded , on the technique of fixed change time sphere method to attain. the wanted specification, The projected antenna founded on coaxial probe feed structure has the supreme possible bandwidth gotten. around 9.3 MHz -10 dB replication coefficient which agrees to WLAN 1.433 GHz frequency band, the supreme possible gain is 4.48 dB. Stable radiation physiognomies exist found crossways the frequency band .

Study and Design of Single and Double Layer Square Patch Antennas for UWB Applications

This paper presents the design of Single and Double Layer microstrip patch antennas for ultra-wideband applications. This structure consists of a square patch with a partial ground plane, fed by a 50[Formula: see text][Formula: see text] microstrip line. This antenna is designed for a system to detect malignant tumors by microwave imaging. Prototypes of the two antennas are fabricated and tested with a network analyzer. The proposed antenna can achieve an ultra-wide bandwidth with VSWR[Formula: see text]2 from 3.82[Formula: see text]GHz to 11.72[Formula: see text]GHz for single layer antenna and from 3.2[Formula: see text]GHz to 10.95[Formula: see text]GHz for double layer antenna, with stable and bi-directional radiation pattern. The gain is good and has a peak value of 6.5[Formula: see text]dBi. The simulation of this antenna has been performed using Ansoft High Frequency Structure Simulator (HFSS) and Computer Simulation Technology-Microwave Studio (CST).

Dual Frequencies Band and Enhanced Wideband Effect of Dual Layer Microstrip Patch Antenna with Parasitic

In current telecommunication situation, the antenna with wideband or multi-band effect are important for cater many users’ demands. In this research, the works explores the effect of parasitic element on the above of the dual layer microstrip patch antenna. Firstly, a basic microstrip patch antenna with a single layer of substrate (Design A) had been simulated using the CST Microwave Studio software. After that, the addition of another layer of substrate with parasitic element is shown as Design B. This proposed microstrip patch antenna resonates at two different frequencies of 2.396 GHz and at 2.543 GHz of frequency with - 36.8 dB and - 35.644 dB of return loss, respectively. The gain performance for both resonant frequencies at 2.396 GHz and at 2.543 is 5.035 dB and 4.814 dB, respectively. The bandwidth of the Design B antenna is 0.097 GHz (2.354 GHz - 2.451 GHz), had been increase compare with Design A performance of 0.039 GHz (2.380 GHz- 2.419 GHz). The second resonant frequency for Design B is only 0.028 GHz. (2.526 GHz- 2.554 GHz).

Dual-layer Microstrip Antenna Design for Wireless Communications

The present work deal with the design of a triple band, dual layer Microstrip Patch Antenna. The frequencies of three bands are 0.9GHz, 1.798GHz, 2.402GHz. the S-parameter and the gain characteristics as well as radiation pattern are investigated. The proposed antenna is suggested to be used in a mobile phone handset that covers three frequency bands which include GSM 900 (889-960), GSM 1800 DCS 1800 (1710-1885), Bluetooth and Wi-Fi/WLAN (IEEE 802.11 b/g/n) ISM 2450 (Industrial, Scientific and Medical) (2400-2500). The proposed antenna shows return loss (RL) of -17.79dB at 0.9 GHz; -18.5 dB RL at 1.798 GHz; and -44.2 dB RL at 2.4 GHz which are encouraging results. Designing and simulation of the proposed antenna were based on CST software package. Finally enact three bandwidth are got and the antenna shows an encouraging results for WLAN applications.

Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer

A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2.45 GHz. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch antenna. The proposed antenna is simulated and measured. According to the simulated and measured results, it is shown that the unidirectional antenna has a higher gain and a higher front to back ratio (F/B) than the bidirectional one. This is achieved by using a second flame retardant layer (FR-4), coated with an annealed copper of 0.035 mm at both sides, with an air gap of 0.04λ0as a reflector. A gain of 5.2 dB with directivity of 7.6 dBi, F/B of 9.5 dB, and −18 dB return losses (S11) are achieved through the use of a dual substrate layer of FR-4 with a relative permittivity of 4.3 and a thickness of 1.6 mm. The proposed dual layer microstrip patch antenna has an impedance bandwidth of 2% and the designed antenna shows very low complexity during fabrication.

Co-axial Fed Rectangular Microstrip Patch Antenna for 5.2 GHz WLAN Application

In this paper, the design of a co-axial fed single layer microstrip patch antenna (MSA) for 5.2 GHz WLAN application is presented. The impedance matching and the radiation characteristics of this proposed structure are studied and analyzed using Computer Simulation Technology (CST) Microwave Studio, which is a commercially available electromagnetic simulator based on the method of finite difference time domain technique to achieve the desired specification. The proposed antenna based on co-axial feed configuration has the maximum achievable bandwidth obtained about 219.2 MHz (5.14-5.36 GHz) at -10 dB reflection coefficient which corresponds to WLAN 5.2 GHz frequency band and the maximum achievable gain is 5.208 dB. Stable radiation characteristics are obtained across the frequency band.

GPS L1/L2, GLONASS 수신기용 다중 대역 단일 패치 안테나

본 논문에서는 GPS L2/L1, GLONASS 통합 수신기용 다중 대역 단일 패치 안테나를 설계 및 제작하였다. 설계된 안테나는 이중 급전 방식이고, 슬롯을 가진 단일 마이크로스트립 패치와 임피던스 매칭 회로로 구성되어 있다. 설계하고자 하는 안테나의 주요 목표 규격은 동작 주파수 대역인 GPS L2(1,227.6 MHz)/L1(1,575.42 MHz), GLONASS(1,602 MHz)에서 정재파비(VSWR: Voltage Standing Wave Ratio) 2.0 이하, 우선회 원형 편파(RHCP: Right-Hand Circularly Polarization) 특성, 30 dB 이상의 능동형 안테나 이득, 3 dB 이하의 축비이며, 시험을 통하여 주요 규격이 만족됨을 확인하였다. In this paper, we have designed a multi-band single layer microstrip patch antenna with slots for GPS L2/L1, GLONASS receivers. The antenna has dual feed structure and consists of single layer microstrip patch with slots and impedance matching circuit. The antenna specifications are a VSWR(Voltage Standing Wave Ratio) of less than 2.0, RHCP(Right-Hand Circular Polarization) characteristics over the operating frequency bands of GPS L2(1,227.6 MHz)/L1(1,575.42 MHz) and GLONASS(1,602 MHz), the maximum active antenna gain of more than 30 dB and the axial ratio of less than 3 dB. The antenna has been successfully evaluated by various tests.

Near fields of microstrip antennas

The paper presents an iterative method for the computation of the near fields of single layer microstrip patch antennas. A judicious combination of the advantages of the MPIE (mixed potential integral equation) method, the FFT algorithm and the biconjugate gradient leads to an efficient numerical solution. The scheme can deal with patches of arbitrary shapes and is capable of dealing with a very large number of unknowns. Near field computation is done in a straightforward manner by computing the weighted near fields. For illustration, three patches belonging to the family of generalized annular sector have been chosen. Computed results of input impedances with a coaxial probe excitation have been compared with measurements. Computed near field amplitudes have also been compared with measured results where possible. Computed far field characteristics have been correlated with the near field information.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>