The complementary structure provides a way to design the integrated devices. Jam, 20 design of a multiband asymmetric patch antenna for wireless. The simulated tuning range is 8 while the measurements showed a range of 4. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. A tunable microstrip patch antenna with switchable polarization akansha tandon1, mr. A novel tunable microstrip patch antenna using liquid crystal. Frequency tunable printed antenna with 90% size reduction for.
It can be significantly improved by using a variety of. Tunable patch antenna using semiconductor and nanoscale. College of engineering and technology, bareilly1 hod ec dept. Design and characterization of a tunable patch antenna loaded with. A compact single layer coaxial probefed microstrip antenna with.
However, patch antennas receivetransmit signals over a very narrow bandwidth typically a maximum of 3% bandwidth. Patch antennas are fundamental elements in many microwave communications systems. Optimized tunable frequency microstrip patch antenna ieee xplore. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. The microstrip patch antenna calculator determines the length l and width w of a rectangular microstrip patch antenna for a given resonant frequency or vice versa. Microstrip patch antenna mpa is more capable than other antennas due to its. In this paper the design of a compact, efficient and electronically tunable antenna is presented. Design and characterization of a tunable patch antenna loaded with capacitive mems switch using csrrs structure on the patch. Tunable microstrip patch antenna using fss for wlan. Design of tunable frequency bandwidth enhanced circular patch. Compared with the conventional design, this novel antenna achieves a larger frequency tuning range, much wider impedance bandwidth, higher radiation. Liquid crystal tunable microstrip patch antenna iet. Losses in the commercially available lc material at these frequencies give rise to antenna efficiencies ranging from 35 40 at best and falling to around 20.
Design modifications directed toward bandwidth expansion generally yield 10% to 40% bandwidth. This calculator calculates the length and width of a patch antenna based on the frequency, dielectric constant of the dielectric and the height of the thickness of. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Tunable microstrip patch antenna using fss for wlan applications abstract. A tunable microstrip patch antenna with switchable. If the ratio lw is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. Liquid crystal tunable microstrip patch antenna abstract. Bi, frequency tunable slotcoupled dielectric resonators antenna, journal of. A microstrip patch antenna operating in the 5 ghz range and tuned by liquid crystal lc is described. The series varactor tuned patch antenna configuration was the bandwidth enhancement. The fundamental structure of the antenna consists of a. Bandwidth enhancement of microstrip patch antenna using. College of engineering and technology, bareilly2 abstract a novel reconfigurable microstrip patch antenna with frequency and polarization diversities is. In this paper, a design of compact tunable microstrip antenna using frequency selective surface fss is proposed and presented.
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