It consist of microstrip feed that couples electromagnetic waves through the slot above and slot radiates them. This article presents a study of microstrip fed cavitybacked slot cbs antennas using a new inverted configuration. Munearzero metasurface for microstripfed slot antennas. Figure1shows the geometries of a conventional insetfed rectangular microstrip patch antenna, a slotloaded rectangular microstrip patch antenna, and a scaled slotloaded rectangular microstrip patch antenna. This study presents two design improvements over conventional microstrip antenna in terms of multiband operation, gain and crosspolarisation xp level. On the miniaturization of microstrip linefed slot antenna. Pdf a new design for a microstripfed slot antenna mfsa is proposed and developed for improving bandwidth, gain and reducing back radiation.
The transition consists of a microstrip radial stub and slot radial stub, both at 90 but with different radii, to achieve wideband impedance matching. A microstripfed ultrawideband slot antenna request pdf. A simple new design method to achieve a dual band microstripfed slot antenna is presented. Impedance characteristics for microstripfed wide slot. Analysis of microstrip line feed slot loaded patch antenna. They are often used in navigation radar usually as an array fed by a waveguide. A novel wideband microstripfed elliptical slot array antenna for kuband applications. Approximate model for microstrip fed slot antennas ieee xplore. A dual band microstripfed slot antenna request pdf. Pdf on the miniaturization of microstrip linefed slot antenna using. Design of a microstripfed quadband slot antenna for wlan. Microstrip patch antennas world scientific publishing. A compact planar microstrip patch antenna is designed for ultrawidebanduwb applications.
The slot antenna fed by the microstrip line is one type of microstrip antenna which has advantages such as low pro. The slot antenna, consisting of a narrow slit in a ground plane, is a very versatile antenna. Gruszczynski, microstrip antenna arrays fed by a seriesparallel slotcoupled feeding network, ieee antennas and wireless propagation letters, vol. Aperture coupled microstrip antenna design and analysis michael paul civerolo a linearlypolarized aperture coupled patch antenna design is characterized and optimized using hfss antenna simulation software 1. The final design of the slot antenna arrived with a rigorous parametric study on different dimensional parameters of slot and. Microstrip patch slot antenna with two parasitic patches. Pdf a novel wideband microstripfed elliptical slot. The proposed antenna shows an ultrawide band uwb operation with good impedance matching by choosing appropriate rhombusshaped slot and feeding structure. For wlan systems, some slot antennas have been proposed by using a slotring antenna with a narrow rectangular. The inverted structure places the metallic cavity in the slot side of the. Pdf microstripfed dualfrequency annularslot antenna. Sayeed abstractin this article, the parametric analysis of the slotloaded microstrip line feed patch antenna is investigated using arti. Microstrip patch antennas have become the favorite of antenna designers because of its versatility and advantages of planar profile, ease of fabrication, compatibility with integrated circuit technology, and conformability with a shaped. On the use of slots in the design of patch antennas.
Adams, flush mounted rectangular cavity slot antennastheory. A new coplanar waveguide cpwfed wideband printed slot antenna is presented, and the impedance characteristics of this antenna with different sizes of tapers are discussed. The microstrip antenna can be fabricated with low cost lithographic technique or by monolithic integrated circuit technique. The uniform phase orthogonal fields are generated in the different parts of the slot essentially by exciting the full wavelength rectangular slot loaded with grounded stubs, symmetrically, with a shorted microstrip line.
This paper presents two simple techniques, a tapered feed line and small ground slot, to significantly increase the bandwidth of planar monopole antenna with microstrip fed. The slot antenna fed by the microstrip line is one type of microstrip antenna which has advantages such as low profile, lightweight, simple structure and easy fabrication 1. A dual band microstripfed slot antenna ieee xplore. A microstripfed slot antenna offers a better isolation between the feed and the material under measurement compared to the microstripfed microstrip antenna. A plurality of holes in the board surrounding the slot are electrically connected front to back to provide the antenna cavity. Introduction microstrip slot antennas invented in 1938 by alan blumlein. Microstrip line feed, coaxial probe feed, and aperturecoupled feed techniques. The measurements of this antenna show two operating bands centered at 8. They are more flexible in integration with other active and passive devices in a hybrid mic and mmic design. A wideband slot antenna design employing a fictitious short. By inserting a strip in the slot of the broadband antenna, a reject frequency band from 4. Pdf lowprofile unidirectional microstripfed slot antenna using.
On the miniaturization of microstrip linefed slot antenna using various slots this item was submitted to loughborough universitys institutional repository by thean author. Easy to incorporate with other microstrip circuit elements and integrate into systems. A microstripfed cylindrical slot antenna is provided for allowing better communication between an object and a satellite. A munearzero metasurface as a superstrate consisting of a periodically square closed ring is proposed for gain and bandwidth enhancement of microstripfed slot antennas mfsas. The use of the shorting structures in this antenna make the antenna behave as a quarterwavelength antenna and the physical length of the antenna is reduced at 2. A microstrip teefed slot antenna is made up of only a single printed circuit board having the tee feed and slot on the front side and a microstrip transmission line feed on the back side. Easy to use in an array to increase the directivity. The radiation bands of the antennas are deduced from. On the miniaturization of microstrip linefed slot antenna using ariousv slots. The widespread use of microstrip patch antenna can be due to its several beneficial features, even. Using this program, representative design guides for the configuration of fig.
Since only a single board is used having all of the components of the antenna. In this paper, it is shown how the impedance characteristics of a microstripfed wide slot antenna structure depend on microstrip offset and microstrip position. Design, analysis and fabrication of a microstrip slot antenna ijitee. A compact microstrip fed notched and slotted uwb microstrip patch antenna. A triangular patch antenna for uhf band with microstrip. A compact rhombusshaped slot antenna fed by microstrip. Hassani, wideband and low sidelobe slot antenna fed by seriesfed printed array, ieee transaction on. Selecting best feeding technique of a rectangular patch. The srr acting as a loading element introduces multiple lowerorder resonances in the antenna, which can be controlled by varying the srrs dimensions as well as its position with respect to the arm of the slot, without altering the geometry of the radiating slot.
It is shown that when two slot antennas are placed in series. Multiband microstripfed slot antenna loaded with split. Microstrip leakywave antenna fed by shortend cpwtoslot. Antenna has been designed and optimized to operate at uhf band 0. The antenna is printed on the two sides of a single substrate and has two microstrip feed lines to excite a.
The annularslot is connected to the splitringslot by a rectangular slot, which increases the surface of the current path, thus notably reducing the resonant frequency for a given size. The second design typeii consists of a parasitic elliptical patch inside the es in addition to the. The metasurface exhibits nearzero permeability 0 microstrip fed slot antenna offers a better isolation between the feed and the material under measurement compared to the microstrip fed microstrip antenna 3. The fundamental parameters of the antenna such as bandwidth, return loss, gain, radiation pattern, and polarization are. Analysis of microstrip line feed slot loaded patch antenna using arti. Slotloaded microstrip patch sensor antenna for high. Slot radiator or slot antennas are antenna that are used in frequency range from about 300 mhz to 25 ghz. Microstripfed dualfrequency annularslot antenna loaded by. Microstrip slot antenna microstip slot antenna is very simple in structure. With the reasonable gain, low profile and coupled with cheaper material, the proposed antenna is suitable for rfid applications. In this paper the study of the effect of various geometrical slots in the ground plane of a 50. This work analyses the performance of different feeding techniques for rectangular microstrip patch antennas used in wireless communications applications, such as in wimax and lte technologies. Design and investigations of a microstrip fed open vshape slot. Cpw fed double bowtie microstrip slot antenna 3 array fr4 substrate for 2.
The microstripfed cylindrical slot antenna comprises a cylindrical base member. Conclusion a oneelement bowtie slot antenna fed by a 50. Aperture coupled microstrip antenna design and analysis. Proposed slot microstrip antenna simulations are done using feko software. In this paper a novel design of microstripfed slot antenna with. The effect of tapering angle with the resonant frequency is also observed. This article describes a wideband quasiyagi antenna fed by a microstrip toslotline transition. This paper presents a novel microstrip antenna fed by microstrip line for radio frequency identification rfid applications. Patterns are somewhat hemispherical, with a moderate directivity about 68 db is typical. Three types of feeding arrangements are discussed here. With modification, it is amenable to waveguide, coplanar waveguide cpw, coaxial, slot line, or microstrip feeding schemes and has been used in all aspects of wireless and radar applications.
A microstripfed compact multiband slot antenna using a single splitring resonator srr is proposed. Antenna design a resonant narrow slot antenna is equivalent to a magnetic dipole, and at its. Microstriplinefed elliptical wideslot antenna with. The first design typei consists of a microstrip line on one side and an elliptical slot es on the other side of the substrate. If the slot antenna is fed near an edge by a microstrip line and the slot width is properly chosen, at a frequency above the. Microstrip leakywave antenna fed by short end cpwtoslot transition tailee chen and yude lin single and dualbeam microstrip leakywave antennas fed by a shortend coplanar waveguide cpwtoslot transition are presented. A compact dualband annularslot antenna loaded by a concentric splitringslot is presented. Chen, compact broadband microstriplinefed sleeve monopole. A microstrip fed antenna offers a better isolations between the feed and the material under measurement campared to the microstrip fed microstrip antenna. A stepped microstrip feedline enables the control of the coupling and provides good matching. In the previous study 16, we presented a microstriplinefed rhombus slot antenna with a pair of parasitic strips. In this paper, a novel design and experimental study of microstriplinefed rhombusshaped slot antenna is presented. Comparison between the measured and ads return loss for the two bowtie slot antennas fed by one cpw shown in fig. Introduction of notches and slots in the rectangular patch leads to bandwidth enhancement.