impedance bandwidth
A Novel Slot for Enhancing the Impedance Bandwidth and Gain of Rectangular Microstrip Antenna
... Since the designed frequency of conventional RMSA is 4 GHz, the impedance bandwidth over return loss less than −10 dB is measured from S (2–4 GHz) to C (4–8 GHz) band of frequencies. The measurements are ...
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Super-wide impedance bandwidth planar antenna for microwave and millimetre-wave applications
... antenna’s impedance bandwidth and reduce its physical footprint, hence the MPA has become extensively used in various wireless communication ...narrow impedance bandwidth that is typically ...
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A Novel Cross-Slot Geometry to Improve Impedance Bandwidth of Microstrip Antennas
... improved impedance matching performance without any effect on axial ...an impedance bandwidth reduction in addition to a poorer axial ratio performance than the primary ...the impedance ...
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Impedance Bandwidth Improvement of Built in Antenna by Novel Feeding Structure at Practical Mobile Handset
... operation bandwidth such as 8.7% impedance bandwidth ranging from 860 MHz to 960 MHz for Global System for Mobile communications (GSM900, 880 ∼ 960 MHz) at the low band and ...23.7% impedance ...
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A Sleeve Monopole Antenna with Wide Impedance Bandwidth for Indoor Base Station Applications
... wide impedance bandwidth, omni-directional pattern, but its bandwidth is not enough to meet the requirement of the mobile communications, and its height is fixed about quarter-wavelength at the ...
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Broadband Monopole Antenna with Wideband Circular Polarization
... The simulated ARs of symmetric and asymmetric ground planes at the broadside direction are exhibited in Figure 5. The degree of asymmetry of the ground plane is decided by the size of notch-B (c×d). The effects of ...
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A Novel Wideband Dual-Band Dual-Polarized Magneto-Electric Dipole Antenna
... As shown in Fig. 2, stair-shaped feeding strips are used to excite the antenna. In fact, the feeding strip has two functions: one is a coupled strip, and the other is a transmission strip. The coupling strip is ...
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BANDWIDTH ENHANCEMENT IN MICROSTRIP PATCH ANTENNA USING LEFT-HANDED METAMATERIAL STRUCTURE AT MULTIPLE OPERATING FREQUENCY
... are impedance bandwidth and return loss. The impedance bandwidth depends on parameters related to the patch antenna element itself and feed ...
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Low Profile Broadband Antenna Array for High-Rate Close Proximity Wireless Communication Systems at 60 GHz
... frequency bandwidth, technological reliability, and manufacturing cost, the design of millimeter-wave (mm-wave) antennas around 60 GHz has an important role in improving wireless communication link ...narrow ...
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Axial Ratio Enhancement of Equilateral Triangular-Ring Slot Antenna Using Coupled Diagonal Line Slots
... The goal of this study is to present a design for enhancing CP performance of ETRS to achieve wide 3-dB ARBW close to its impedance bandwidth. Since a conventional ETRS antenna is linearly polarized, CP ...
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A Dual-Polarized Fabry-Perot Cavity Antenna at Ka Band with Broadband and High Gain
... The partially reflecting sheet arrays were firstly introduced to antenna design by Trentini in 1956 [3], and then referred to as “Fabry-Perot cavity antennas (FPCAs)” by Feresidis and Vardaxoglou [4]. FPCAs provide several ...
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Design of a Broadband Circularly Polarized Antenna Array
... an impedance bandwidth of 51.9% and an axial ratio bandwidth of ...final impedance bandwidth is 22.4%, and the 3 dB axial ratio bandwidth is only ...an impedance ...
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A UHF RFID Antenna Using Double-Tuned Impedance Matching for Bandwidth Enhancement
... the bandwidth, a wide variety of methods have been ...wide bandwidth, but the cost is high, and the structure is ...the impedance bandwidth and axial ratio bandwidth are about ...the ...
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Wideband Circularly Polarized Square Slot Array Fed by Slotted Waveguide for Satellite Communication
... Measured reflection coefficient and axial ratio curves versus frequency are shown in Figure 8, which agree with the simulated ones very well. A measured impedance bandwidth of 6.9% (12 ∼ 12.86 GHz) is obtained ...
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Broadband Capacitive Coupled Microstrip Antenna with I-shape Slot for Wireless Communication System
... In this communication, I-shape slot loaded capacitive coupled patch antenna with broad band behaviourhas been presented. The impedance bandwidth of 58% has been achieved. This antenna can be used for ...
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Cost Effective Dual Band Short Backfire Antenna
... A new excitation structure has been proposed and developed for short backfire antenna. The proposed excitation structure for SBA not only provides dual impedance bandwidth but also reduces blockage of ...
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Broadband Single-Fed Single-Patch Circularly Polarized Microstrip Antenna
... A novel probe-fed rectangular strip is proposed for feeding a single- patch microstrip patch antenna. The technique exhibits broadband, high-gain and low cross polarization characteristics. The designed antenna has an ...
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A Novel CPW-Fed Planar Monopole Antenna with Broadband Circularly Polarization
... improve impedance matching and obtain wider impedance ...better impedance matching can be achieved by widening the top of the patch to a circle instead of a traditional ...the impedance ...
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A Compact Stacked Circularly Polarized Annular-Ring Microstrip Antenna for GPS Applications
... large impedance bandwidth and low cross- polarization ...an impedance transformer to realize impedance matching with 50 Ω, and the transmission loss caused by the very narrow microstrip line ...
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ANALYSIS OF PATCH ANTENNA FOR PARAMETER ENHANCEMENT AT 1.911GHZ
... Rectangular Microstrip Patch antenna loaded with metamaterial (MTM) is proposed for better improvement in the impedance bandwidth and reduction in the return loss at operating frequen- cy 1.911 GHz. The ...
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