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This chapter focuses on the design of dual band antenna intended for existing wireless services including LTE, GPS, GSM, PCS, DCS, GPS, UMTS, WLAN and WiMAX bands. The present techniques available in the open literature include the modification of the main radiator via bending, folding, meandering and wrapping. Each approach offers different advantages, depending on the required application. The introduction of a ground slot in a finite antenna ground plane can be further extended to include reconfigurable features. Thus, such antennas that are compact and have multiband capability can be promising candidates for many wireless applications. Now in this slotted multi band planar system is proposed to intend on working on for frequency bands such as IN GPS, WLAN (over two frequency band spectrum), and WiMAX.
EXISTING ANTENNA SYSTEMS:
??????????????????????? Antennas that are used before are capable of working in the particular frequency applications. Where quarter wavelength radiators used are subjected to miniaturization which affects to form limited bandwidth and low radiation efficiency.
Less reception of due to high return loss due to single patch antenna are used for each individual device.
PROPOSED ANTENNA SYSTEM:
??????????????????????? It is capable of working in 4 frequency bands and for 3 applications as built in by one antenna. The miniaturization is done in various stubbed arms that two E shaped stubs and a T shaped stub designed optimistically to achieve the minimal return loss over the four bands of frequency spectrum.
- 575-1.665GHz ?????????? ????GPS
- 4-2.545GHz IEEE 802.11b&g WLAN
- 27-3.97GHz WiMAX
- 17-5.93GHz IEEE 802.11a WLAN
DESIGN SIMULATOR:?? HFSS 13.0
MATLAB HFSS API
Vector network analyser (Agilent N5242A)
- Used in mobile equipments.
- Used in vehicles area communications.
- Cognitive radio applications.
- High data applications.
Citation information: ????A Multi-band Slot Antenna for GPS/WiMAX/WLAN Systems
- F. Cao, S. W. Cheung, Senior Member, IEEE, and T. I. Yuk, Member, IEEE
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