A frequencyreconfigurable monopole antenna was demonstrated by inserting a varactorbased reconfigurable filter within the input port of a planar wideband. Reconfigurable monopolar patch antenna ieee xplore. For the novel frequency and pattern reconfigurable yagiuda patch antenna detailed in chapter 4, two slots have been used on driven element to achieve frequency and pattern reconfigurability, and two openend stubs have been used to adjust working frequency and. However, the bandwidth of the proposed antenna is less than 3%. A monopolar patch antenna with very wide impedance bandwidth. Octagonal shaped frequency reconfigurable antenna for wi. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. The proposed antenna has a rectangular patch with two shorting pins.
Abstract a concept of reconfigurable monopolar antenna for wifi applications are introduced in this paper. The major objective of this study was to design, fabricate and test two kinds of novel reconfigurable antennas. A single probefed reconfigurable monopolar patch antenna with frequency diversity is presented. Eight varactor diodes are introduced to bridge the gaps between the circular patch and the sectorshaped patches. Geometry of the rectangular microstrip patch antenna. A singlefeed reconfigurable squarering patch antenna with pattern diversity is presented. Manikannan 1,2assistant professor, ck college of engineering and technology, cuddalore, tamil nadu abstract with the rapid advancement in wireless communication, reconfigurable antenna is gaining greater attention. In order to accomplish that, a miniaturization technique based on the application of chip inductors is used in conjunction with frequency reconfiguration capability. Reconfigurable microstrip patch antenna using mems technology. A frequencyreconfigurable dualband lowprofile monopolar. Survey on different types of reconfigurable patch antenna.
Design of frequency reconfigurable patch antennas with defected. Recent developments in reconfigurable and multiband. Due to rapid growth of technology, the requirement of an antenna with less height for mobile phones contributes a huge challenge 1 2. Patternreconfigurable planar circular ultrawideband monopole antenna. Reconfigurable circularlypolarized patch antenna with.
In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism such as rf switches, varactors, mechanical actuators or tunable materials that enable the intentional redistribution of the rf currents over the. Normally, long rectangular patch antennas with compact structure and high. Frequencyreconfigurable lowprofile circular monopolar patch. Survey of microstrip patch antenna international journal of. Frequencyreconfigurable lowprofile circular monopolar. Nowadays, frequency reconfigurable antennas fra are attracting. In this paper, these design concepts have been classified into three basic approaches.
In this paper, a frequency band reconfigurable microstrip octagonal patch antenna has been simulated and analyzed with four switchable states consisting of four narrow bands. Abstract in this paper we propose a rectangular microstrip p atch antenna with inset fed which can operate at 2. A novel design of reconfigurable monopole antenna for uwb. Pattern reconfigurable planar circular ultrawideband monopole antenna. Survey on different types of reconfigurable patch antenna for wireless applications 1k. Keywords patch antenna, monopolar antenna, wifi, pin diode, reconfigurable antenna, hfss.
A monopolar patch antenna that utilizes a bandwidth broadening technique is. Recent developments of reconfigurable antennas for. A comparative analysis of various reconfigurable and multiband antenna concepts is presented. The chip inductors change the impedance response of the monopole, allowing to reduce the resonant. The antenna has distinct monopolar and broadside radiation patterns at its lower and upper bands, respectively, and a previous realization only allowed simultaneous tuning of the. Compact, frequency reconfigurable, printed monopole antenna. Based on the proposed omnidirectional cp antenna, a polarization reconfigurable antenna was designed. A single probefed reconfigurable monopolar patch antenna with fre quency diversity is presented.
Design of reconfigurable microstrip patch antenna for wlan. A reconfigurable antenna is an antenna capable of modifying its frequency and radiation. Typically, a reconfigurable patch antenna consists of a number of. A cpwfed structure shaped substrate wideband microstrip. Pdf a novel frequencyreconfigurable antenna is presented based on a circular monopolar patch antenna. This paper proposes a possible implementation of a compact printed monopole antenna, useful to operate in umts and wlan bands. A design method is described for reconfigurable circularlypolarized cp microstrip array antennas with conicalbeam radiation. Simulation of reconfigurable planar inverted f antenna for 5g technology. Introduction mobile communication has become an important part of our daily life. In 45,46, two designs of polarization reconfigurable patch antennas of.
The microstrip rectangular structure as shown in fig. Upon toggling the switch between on and off states, the antenna can be reconfigured 47. Recently, lots of frequency reconfigurable antennas based on uwb antenna, circular monopolar patch antenna, slot antennas 711, bowtie antenna, and pifa were proposed for multiband wireless communication applications like low frequency lte band 699862 mhz, high frequency lte band 24962690 mhz, bluetooth 24002480 mhz, wlan 5. Design and performance issues of microstrip antennas.
A patch antenna is shorted to the ground plane with thin wires, which is called monopolar wirepatch antenna is proposed in 2. Its configurationis the integration of an uwb monopole antenna. The antenna structure has four shorting walls placed respectively at each edge of the squarering patch. Reconfigurable monopolar patch antenna iet journals.
A reconfigurable wideband and multiband antenna using dualpatch elements for. The antenna structure has four shorting walls placed respectively at each edge of the squarering patch, in which two shorting walls are directly connected to the patch and the others are connected to the patch via pin diodes. The proposed antenna structure consists of four lshaped patch. Frequency reconfigurable circular patch antenna with an. The antenna array achieves a wide impedance bandwidth of 34. Design and simulation of reconfigurable monopolar antenna. In order to satisfy the requirements for the advanced systems used in modern wireless and radar applications, different multiband and reconfigurable antennas have been proposed and investigated in the past years. The proposed antenna design contains two closelyspaced coaxialfed patch antennas with ushaped slots to generate dualband operation at 2.
A dualband frequency reconfigurable monopolar antenna consisting centre fed patch with four symmetrical slots using varactor diodes was proposed in 16. Frequency tunable microstrip patch antenna using rf mems technology. The authors are thankful to mwt company staff for their help. The uwb antenna bandwidth covers the entire band specified for uwb applications 3. Four open stubs are attached to the rectangular patch through four pin diodes, and the ability of switching the antenna operating frequency is achieved by using dual inline package switches to control the states of the. Reconfigurable squarering patch antenna with pattern. The antenna generated omnidirectional radiation patterns with a reduced height of 0. The antenna comprises of a centerfed circular patch surrounded by four sectorshaped patches. A novel frequencyreconfigurable antenna is presented based on a circular monopolar patch antenna. Small reconfigurable monopole antenna integrated with pin.
Index terms active patch,cognitive radio,feeding techniques, gain enhancement, impedance bandwidth, polarization, reconfigurable patch, ultrawide bands. Design and implementation of reconfigurable microstrip. This paper presents a planar ultrawide band uwb sensing antenna accompanied with a monopole narrow band communicating antenna for interweave cognitive radio cr applications. In addition to the varactor diode, a pin diode is attached to the communicating antenna to expand the. Forum for electromagnetic research methods and application.
The objective of work is to design and develop polarization reconfigurable microstrip patch antennas which radiate electromagnetic wave of various orthogonal patterns i. Switches can be mounted over these slots to obtain different resonant frequencies. A progression of parametric study was done to get that how the features of the antenna depends on dimensions and material of geometry. By simulating the antenna, four frequency bands are achieved 0. Design and simulation of reconfigurable monopolar antenna for wifi. Reconfigurable microstrip patch antenna using mems. Design of reconfigurable microstrip patch antenna f or wlan application biplab parida 1, abhishek kumar 2, janardan sahay 3 deptt. Microwave technology company, p 14, saadi avenue, vezarat kar street, azadi.
923 1497 740 809 558 1557 419 1473 898 290 586 150 63 907 777 832 372 552 567 165 192 1516 375 1085 1394 1105 1415 1202 11 509 1038 849 396 382