A frequency reconfigurable printed microstripfed patch antenna is proposed here. A frequency reconfigurable rotatable antenna design for. Reconfigurable circular ring patch antenna for uwb and cognitive radio applications. Pdf reconfigurable wideband patch antenna for cognitive. A singleport uniplanar antenna with a builtin tunable filter is presented for operation in multiple lte bands for cognitive femtocell applications. Section ii introduces the design approach of reconfigurable microstrip antenna. In addition to this, a switchable design is proposed. A wide spectrum sensing and frequency reconfigurable antenna. The first part is a ushaped monopole antenna with ultrawideband uwb characteristics. The antenna design as proposed herein, can operate at either of the frequency bands used in 5, 6 and 7 ghz with very wideband impedance bandwidth. In this paper, an antenna with reconfigurable band notches, for cognitive radio applications, is proposed. A new reconfigurable antenna design for cognitive radio. A shorted microstrip patch antenna is designed and a shorting pin is used to connect the patch to the wideband antenna. Frequency reconfigurable antennas for cognitive radio applications.
Reconfigurable wideband circularly polarized stacked square patch antenna for cognitive radios. Moreover, either lumped or microstripbased matching network is. Budimir, reconfigurable wideband patch antenna for cognitive radio, in 2009 loughborough antennas and propagation. Reconfigurable microstrip antennas for cognitive radio intechopen.
In this chapter, an ultrawideband uwb slotted eshaped microstrip patch antenna is designed, and simulation tests are carried out for the applications of cognitive radio and navigation system. Reconfigurable wideband patch antenna for cognitive radio 2009. The frequency tuning is performed by switching on and off two patches. The filtenna provides two switchable operational states. Simons, the glenn research center june 28th 2017 the university of puerto rico, mayaguez campus college of engineering. A survey on uwb and reconfigurable antennas for cognitive. A key enabler for realization of a cognitive communication system is the capability of reconfigurability in the underlying hardware and the associated protocol suite. The antenna can operate in dualband or in very wide band mode in 5, 6 and 7\ud ghz bands. A survey on planar antenna designs for cognitive radio. The antenna structure consists of a sensing antenna and a frequency reconfigurable antenna system. Reconfigurable wideband antenna array provides one fired on antenna element at most of the. The antenna demonstrated a wideband performance at 28 ghz, tunable narrowband rejection between 5. The proposed antenna is capable of switching between a wide operating band of 3.
A new planar reconfigurable wideband slot antenna is proposed for cognitive radio cr applications in this paper. Results for three anten nas, suitable for small and mediumsized terminals, are given. A hybrid reconfigurable antenna design for cognitive radio. Design and simulation of reconfigurable antenna for cognitive. Reconfigurable monopole antenna with defected ground. A printed reconfigurable ultra wideband uwb monopole antenna with triple narrow bandnotched characteristics is proposed for cognitive radio applications in this paper.
Currently, he is doing research on frequencyreconfigurable patch antennas for cognitive radio applications. After recognizing the spectrum condition, the proposed antenna can reconfigure its polarization state, bandwidth and radiation pattern. In this paper, a reconfigurable multi band notches antenna, for cognitive radio applications, is proposed. Uwb and reconfigurable antennas for cognitive radio. Design of reconfigurable band notches antenna for cognitive. The tested results in wideband mode shows that the proposed antenna operates from 3. Reconfigurable wideband patch antenna for cognitive radio core. Multiband reconfigurable antenna for cognitiveradio. Reconfigurable wideband patch antenna for cognitive radio ieee. The switch was proposed in 3 for the reconfigurable multiband antenna to switch on and off two patches antenna two operates antenna in two different dual band mode or wideband mode. In this work, a new ultra wide band circular ring patch antenna is proposed for spectral sensing application as well as the transmission and reception of radiofrequency in cognitive radio systems.
In ref 3 a reconfigurable multiband and wideband patch antenna. Reconfigurable wideband circularly polarized stacked. Reconfigurable circular ring patch antenna for uwb and. The antenna can be operated as ultra wideband, and is reconfigurable in terms of the ability to select one or two notches band in the srr resonant frequency. The second category includes reconfigurable uwbnb antennas. An integrated frequency reconfigurable antenna for cognitive. Huang, bandwidth study of microstrip reflectarray and a novel. In 5, the splitring resonators 6 are employed in the. This article mainly focuses on the concept of cognitive radio paradigm in the ultrawideband 3. Cognitive radio communication is envisaged to be a new paradigm of methodologies for. Reconfigurable wideband circularly polarized stacked square patch antenna for cognitive radios miguel a. A versatile reconfigurable antenna for cognitive radio.
It introduces reconfigurable patch antenna with a cslot shape, which is capable of operating in dual band or wideband operations. Reconfigurable antennas for uwb cognitive radio communication. A frequency band reconfigurable antenna is designed and experimentally analyzed. Therefore, in configurationii a very thin slit is etched in the uwb antenna, which separates the region. The reconfigurable characteristics with frequency diversity are achieved using four ideal switches integrated on the meanderslot defected ground structure dgs band. The use of wideband antennas for spectrum sensing and narrowband. This paper proposes a frequency reconfigurable antenna system designed for cognitive radio applications. Implementation of a cognitive radio frontend using. An integrated reconfigurable antenna capable of spectrum sensing along with various reconfiguration features such as polarization, frequency, bandwidth, and radiation pattern is proposed here. A reconfigurable wideband and multiband antenna using dualpatch elements for compact wireless devices. Eshaped radiation patch with a coaxial probe feeding into it. In this paper, a survey on ultrawide band and reconfigurable antennas for cognitive radio application is presented. Ultrawideband slotted microstrip patch antenna for. The antenna can be operated as ultra wideband and is reconfigurable in terms of the, ability to select a notched band in the srr resonant frequency.
In spectrum overlay cr, secondary users search for unused. Reconfigurable multiband antenna demonstrated in some papers can be switched from single narrowband to another single narrowband 4, between dual band to another. This paper presents a versatile reconfigurable antenna capable of spectrum sensing along with various reconfiguration features. This letter presents a new antenna design suitable for cognitive radio communication. Uwb and reconfigurable antennas for cognitive radio application using mems technology ms. The first structure is an ultrawideband uwb antenna covering the spectrum from 3. Reconfigurable wideband circularly polarized stacked square. The antenna can operate in two dualband modes and a wideband mode from 5 to 7 ghz.
Tripathi, an integrated frequency reconfigurable antenna for cognitive radio in uwb monopole without much affecting the s11 response, than this space can be reused to integrate another nb antenna. Design and simulation of reconfigurable antenna for. Cognitive radio system based on software defined architecture aims to improve the spectrum utilization by changing the transmitter parameters based on the interaction with the environment in which it operates 8. A novel optically controlled reconfigurable antenna for.
In the concurrent triband mode frequency tuning is done by microstrip open stub at 1. The second structure is a frequency reconfigurable triangularshaped patch for establishing communication with another. Wideband to concurrent triband frequency reconfigurable. The antenna is based on a monopole microstrip patch fed by coplanar waveguide. Frequency reconfigurable microstrip antenna for cognitive. A reconfigurable triplenotchband antenna integrated with defected microstrip structure bandstop filter for ultrawideband cognitive radio applications yingsongli, 1 wenxingli, 1 andqiuboye 2 college of information and communications engineering, harbin engineering university, harbin, heilongjiang. A novel slot antenna with reconfigurable meanderslot dgs. Dec 28, 2017 in this chapter, an ultra wideband uwb slotted eshaped microstrip patch antenna is designed, and simulation tests are carried out for the applications of cognitive radio and navigation system. Frequency reconfigurable patch antenna with bias tee for. Dec 01, 2015 the switch was proposed in 3 for the reconfigurable multiband antenna to switch on and off two patches antenna two operates antenna in two different dual band mode or wideband mode. Recent advances on radiofrequency design in cognitive radio. Aug 14, 2017 reconfigurable circular ring patch antenna for uwb and cognitive radio applications. A reconfigurable triplenotchband antenna integrated with. Nagar, chennai 3philips innovation campus manyata tech park, bangalore.
Uwb antenna with reconfigurable triple band notched characteristics for cognitive radio 1554 characteristics at wimax 3. A reconfigurable multiband antenna for rfid and gps. The frequency reconfigurability is achieved by using two pin diodes to couple or decouple a ring slot resonator filter from the antenna feed line. When it detects an idle frequency band available, the narrowband reconfigurable antenna that is communicating antenna will switch to the corresponding unused band for communication 3. Electronically reconfigurable filtenna for cognitive radios.
Budimir, reconfigurable wideband patch antenna for cognitive radio. Reconfigurable double cslot microstrip patch antenna fed by 50 microstrip line is proposed in this paper. Cognitive radio paradigm and recent trends of antenna systems in. Research article a reconfigurable triplenotchband antenna. S3 1,2assistant professor 1,2,3department of electronics and communication 1,2r.
Implementation of a cognitive radio frontend using optically. Reconfigurable circular ring patch antenna for uwb and cognitive radio applications abstract. Santasri koley is a project fellow in the department of electronics engineering, ism, dhanbad, india. The antenna consists of a microstrip feed connected to a circular radiating element divided into three patches which are connected through silicon pin diodes used as switches for achieving reconfigurability as being cheap and easy to implement having high switching capabilities. The sensing antenna scans the channel to discover frequency bands while the reconfigurable section is tuning to communicate within these bands. The wideband mode can be obtained when both switches are in the on state with impedance bandwidth of 33. Abstracta reconfigurable wideband and multiband cslot patch antenna with dualpatch elements is proposed and studied. A compact cognitive radio uwbreconfigurable antenna. Reconfigurable wideband patch antenna for cognitive radio h. Since the uwb antenna is cpw fed monopole it would be considered as a defected ground plane for the narrowband antenna.
The wideband function is obtained by inserting a meander. Band and frequencyreconfigurable circularly polarised. Barbosa kortright, the university of puerto rico, mayaguez campus seth w. In the cognitive radio model, ultrawideband antennas are employed for free channels identification and reconfigurable narrow band antennas for communication. In our design, a new antenna structure for cognitive radio is presented. Frequency reconfigurable uwb antenna design for wireless. In proceedings of the 8th european conference on antennas and propagation eucap 2014 pp. So frequency reconfigurable antennas can be applied among a wide arrangement. An integrated frequency reconfigurable antenna for. Pdf a reconfigurable cognitive radio antenna design.
In the cognitive radio model, ultrawideband antennas are employed for free channels identification and. This antenna has been highlighted in iet electronics letter as the first multifunction antenna to combine wideband, notch and narrowband modes. This paper focuses on the frequency reconfigurable antennas. A frequency reconfigurable rotatable antenna design for cognitive radio systems g. Design and simulation of reconfigurable antenna for cognitive radio b. A band and frequencyreconfigurable circularly polarised cp filtenna that exhibits good selectivity and outofband rejection in both its wideband and continuously tunable narrowband states is reported for cognitive radio cr applications. Towards software defined antenna for cognitive radio. Reconfigurable wideband patch antenna for cognitive radio. The antenna is designed in such a way that it suits for cognitive radio networks. A new technology called cognitive radio cr has emerged to compensate. Pdf reconfigurable wideband patch antenna for cognitive radio. Combination between reconfigurable concept and wideband antenna array is effective to senseinteract with the runtime environment variations, lower the number of rfswitches, and reduce the delivered power of firing switches compared to pixel antenna.
Ultrawideband uwb technology is very suitable as the enabling technology for this approach. A hybrid reconfigurable antenna design for cognitive radio system 329. Reconfigurability is achieved by inserting pin diode switches in dmsdefected microstrip structure t slot filter. It consists of two structures incorporated together into the same substrate. A printed reconfigurable ultrawideband uwb monopole antenna with triple narrow bandnotched characteristics is proposed for cognitive radio applications in this paper. Then, switches are incorporated into the filtering uwb antennas to.
Reconfigurable microstrip patch antenna for wlan software. Reconfigurable multi band notches antenna for cognitive radio. To ease congestion and boost speeds, cognitive radio cr is currently seen. Frequency reconfigurable antennas have reconfiguration of frequency by changing the structure while other parameters remain unchanged. The antenna can operate in dualband or in very wide band mode in 5, 6 and 7 ghz bands. A versatile reconfigurable antenna for cognitive radio, in asia pacific microwave conf. Reconfigurable double cslot microstrip patch antenna fed by 50 ohm microstrip line is proposed in this paper. Budimir 2 1wireless network and communication centre wncc, school of engineering and design, brunel university, west london, ub8 3ph, uk.
Towards software defined antenna for cognitive radio networks. In this paper, reconfigurable microstrip antenna with a very wide tunability range for overlay cognitive radio applications are presented. Ultrawideband slotted microstrip patch antenna for cognitive. In this paper, the design of wideband circularly polarized cp patch antennas for frequency reconfiguration in the physical layer of cognitive radios are. Reconfigurable multi band notches antenna for cognitive. A reconfigurable triplenotchband antenna integrated with defected microstrip structure bandstop filter for ultra wideband cognitive radio applications yingsongli, 1 wenxingli, 1 andqiuboye 2 college of information and communications engineering, harbin engineering university, harbin, heilongjiang, china. Budimir 2 1wireless network and communication centre wncc, school of engineering and design, brunel university, west london. A novel slot antenna with reconfigurable meanderslot dgs for. A versatile reconfigurable antenna with integrated sensing. Description of smart permittivity material is presented in section iii. A dual band reconfigurable double cslot microstrip patch antenna is also proposed in 7.
Reconfigurable double cslot microstrip patch antenna fed by 50. A reconfigurable cslot microstrip patch antenna is proposed in 4. The sensing antenna scans the channel to discover frequency bands while the reconfigurable section is tuning to communicate within. Bandreconfigurable monopole antenna for cognitive radio. Cognitive radio is an intelligent wireless communication system that is aware of its surrounding environment i. The authors in 4 discuss some of the possible antenna requirements for cognitive radio applications and outline some design approaches. The proposed antenna senses the spectrum by semicircular structure from 3 ghz to 10 ghz to identify the spectrum conditions. Pdf uwb sensing antenna, reconfigurable transceiver and. The narrowband antenna is a microstrip patch printed on the reverse side of the substrate, and connected to the wideband antenna via a shorting pin and designed to oper ate from 5.
For cognitive radio application, both, a wideband antenna for channel sensing and a reconfigurable antenna for communication are. A new reconfigurable antenna design for cognitive radio article in ieee antennas and wireless propagation letters 81. Reconfigurable and tunable filtenna for cognitive lte. Christodoulou, member, ieee abstractthis letter presents a new antenna design suitable for cognitive radio communication. Normally, a bandwidth remains underutilized in cognitive radio network.
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