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Design and Development of a 2 × 1 Array of Slotted Microstrip Line Fed Shorted Patch Antenna for DCS Mobile Communication System  [PDF]
G. A. Bidkar, R. M. Vani, P. V. Hungund
Wireless Engineering and Technology (WET) , 2013, DOI: 10.4236/wet.2013.41009
Abstract:

Compact microstrip antennas have recently received much attention due to the increasing demand of small antennas for personal communication equipment. The problem of achieving a wide impedance bandwidth for compact microstrip antennas is becoming an important topic in microstrip antenna design. In this paper the design and development of a 2 × 1 array of a low cost slotted microstrip line fed shorted patch antenna (MFSPA) has been presented. Both the shorted patch and microstrip line feed network have air substrate. The material cost is thus reduced to a minimum. The array consists of two adjacent patches fed, using a simple microstrip T network. The impedance bandwidth of nearly 40%, covering the bandwidth requirement of 1750 MHz band is obtained. Also the antenna exhibits dual band operation. The cross polarization radiation in H-Plane observed with a single element antenna has been reduced considerably with 2 × 1 array. A peak antenna gain of 9.2 dBi is obtained with a small variation of 0.8 dBi. From the results obtained it is clear that the antenna array studied has a low cost fabrication and is suitable for applications in DCS mobile communication base station.

 

Design of Single Pin Shorted Three-Dielectric-Layered Substrates Rectangular Patch Microstrip Antenna for Communication Systems
Aditi Sharma;Ghanshyam Singh
PIER Letters , 2008, DOI: 10.2528/PIERL08010703
Abstract: In this paper, we have simulated a single-pin-shorted microstrip line fed three-dielectric-layer (with different permittivity and thickness) rectangular patch microstrip antenna for all those communication systems whose limited antenna size is premium. Low permittivity hard foam has been used as one substrate to achieve wide bandwidth. The simulation of this proposed antenna has been performed by using CST Microwave Studio, which is a commercially available electromagnetic simulator based on the finite difference time domain technique.
CRLH Zor Antenna of a Circular Microstrip Patch Capacitively Coupled to a Circular Shorted Ring
Seongryong Yoo;Sungtek Kahng
PIER C , 2012, DOI: 10.2528/PIERC11072803
Abstract: In this paper, a novel Metamaterial (MTM) CRLH Zeroth Order Resonance (ZOR) Circular microstrip patch antenna is proposed to have a monopole antenna pattern due to the completely closed loop of a magnetic current around the structure, and reduced profile and size due to the left-handedness. Different from other ZOR antennas of 1D periodic arrays with shorted patches, we suggest 1 circular patch capacitively coupled to 1 circular shorted ring to have ZOR and -1st resonance modes. The antenna is designed and modeled with equivalent circuits for the coaxial-fed central patch and the circular shorted ring and verified by the comparison with 3D EM simulation of the physical structure. The no-phase variation at the ZOR (2.4 GHz) and the -1st resonance mode (2 GHz) as the metamaterial properties are proven with electric field distributions and far-field patterns. The measurement shows there exist the ZOR and the -1 resonance modes despite the frequency shift from the simulation, which is proven by the monopolar radiation pattern and broadside radiation pattern, respectively. So the advantages of the proposed antenna will be addressed with the low-profile monopole at the ZOR and the size reduction effect at the -1st resonance.
Broadband Shorted Sectoral Microstrip Antenna
Amit A. Deshmukh;Kamla Prasan Ray
PIER C , 2011, DOI: 10.2528/PIERC11010202
Abstract: The broadband microstrip antenna is realized by cutting the slot inside the patch. The slot introduces a resonant mode near the fundamental resonance frequency of the antenna and realizes broadband response. The compact variations of circular microstrip antenna are realized by placing the shorting posts along the zero field line at the fundamental mode. These shortened antennas have narrower bandwidth. In this paper, a compact half U-slot cut shorted sectoral microstrip antenna is proposed. The detailed analysis has been carried out to study the effect of the slot on various modes of the Sectoral patch. It has been observed that the half U-slot does not introduce any additional mode, but reduces the resonance frequency of the higher order mode of the shorted Sectoral patch and along with its fundamental mode realizes broader bandwidth. The bandwidth of more than 700 MHz, at the center frequency of approximately 2700 MHz, has been realized.
Microstrip Patch Antenna with Skew-F Shaped DGS for Dual Band Operation
Ashwini Kumar Arya;Amalendu Patnaik;Machavaram Venkata Kartikeyan
PIER M , 2011, DOI: 10.2528/PIERM11052305
Abstract: The goal of this paper is to use defected ground structure (DGS) in microstrip antennas for dual band operation at microwave frequencies. The soft nature of the DGS facilitates improvement in the performance of microstrip antennas. A design study on microstrip patch antenna with specific DGS slot has been presented in the proposed work. In this paper, a stacked microstrip patch antenna (SMPA) has been designed for broadband behavior, and then skew-F shaped DGS has been integrated with a detailed study of possible DGS slots in a small area for dual band operation. The design and optimization of both the SMPA and DGS structures along with the parametric study were carried out using CST Microwave Studio V.9. Further, the dual band antenna, i.e., the SMPA with skew-F shaped DGS, has been fabricated, and the experimental results have shown a good agreement with the simulation ones.
Internal Shorted Patch Antenna Integrated with a Shielding Metal Case for UMTS Operation in a Pda Phone
Yung-Tao Liu
PIER C , 2009, DOI: 10.2528/PIERC09070704
Abstract: An internal shorted patch antenna integrated with a RF/battery shielding metal case for application in a UMTS mobile phone is presented. The shorted patch antenna is mounted at the dented portion of the shielding metal case, with the top patch flushed with the top surface of the shielding metal case. This configuration shows no protruded portions, which makes the antenna very suitable to be integrated in a UMTS mobile phone as an internal antenna. With the integrated design, which provides a coupling-free region for the nearby electronic components or conducting elements in the mobile phone, possible coupling between the antenna and associated components can be avoided. Details of the proposed design showing a wide bandwidth for UMTS (Universal Mobile Telecommunication System, 1920 ~ 2170 MHz) operation are demonstrated, and effects of the dimensions of the RF/battery shielding metal case are presented and discussed.
A NEW DESIGN APPROACH FOR BANDWIDTH ENHANCEMENT AND DUAL BAND OPERATION OF MICROSTRIP U-SHAPE PATCH ANTENNA USING PHOTONIC BAND GAP STRUCTURE
PANKAJ KUMAR GOSWAMI,RAJESH NEMA
International Journal of Engineering Science and Technology , 2012,
Abstract: Microstrip patch antennas have a rapid growth of its importance in the field of wireless communication due to ease of fabrication and versatility of possible geometries. It is still being the part of development, to design a suitable antenna of high bandwidth with compact geometry for commercial applications. The purpose of thispaper is to design a compact size high bandwidth microstrip patch antenna with promising efficiency for wireless applications. A U-shape microstrip patch antenna, operating in dual band, with PBG structure is proposed. A U-shape probe feed antenna with photonic band gap structure on ground plane could be able to improvebandwidth about 32.26% in the band of frequency 1.6-2.4 GHz & about 23.75 % in the band of frequency 3.7- 4.7 GHz. The results are simulated & depicted with the help of full wave simulator IE3D V9.0.
Compact Half U-Slot Loaded Shorted Rectangular Patch Antenna for Broadband Operation
Jamshed Aslam Ansari;Nagendra Prasad Yadav;Prabhakar Singh;Anurag Mishra
PIER M , 2009, DOI: 10.2528/PIERM09090102
Abstract: In this paper, analysis of half U-slot loaded patch antenna with shorting wall is presented. The parameters of the antenna significantly depend on slot and notch dimensions. Bandwidth of the proposed antenna is found to be 21.59%. The 3dB beamwidth of the antenna is found to be 90 at the central frequency of 2.6 GHz. The theoretical results are compared with IE3D simulated and experimental ones which are in good agreement.
Design consideration of Microstrip Patch Antenna
Sunil Singh,Neelesh Agarwal,Navendu Nitin,Prof.A.K.Jaiswal
International Journal of Electronics and Computer Science Engineering , 2013,
Abstract: The study of microstrip patch antennas has made great progress in these days. This is mostly due to their versatility in terms of possible geometries that makes them applicable for many dierent situations. Compared with conventional antennas, microstrip patch antennas have more advantages and better prospects like low cost, lighter in weight, low profile, smaller in dimension, low volume and conformity and ease of fabrication. Theses microstrip patch antennas can provide dual-frequency operation, dual and circular polarizations, feedline flexibility, frequency agility, broad band-width, beam scanning omnidirectional patterning. In this paper we discuss the microstrip antenna, feeding techniques and application of microstrip patch antenna with their advantage and disadvantages over conventional microwave antennas.
Design and Investigation of a Dual-Band Annular Ring Slot Antenna for Aircraft Applications
Li Sun;Bao-Hua Sun;Guanxi Zhang;Dan Cao;Bin Fan
PIER C , 2013, DOI: 10.2528/PIERC13012309
Abstract: A novel dual-band annular ring slot antenna is investigated. The antenna consists of a center-fed circular microstrip patch antenna with a coupled annular ring. And it is shorted concentrically with a set of conductive vias. By adjusting the parameters of the antenna, the dual resonant frequencies for two modes (TM and TM modes) are achieved. The antenna is fabricated and tested. Results show that the proposed antenna with height of 0.0217λ can provide gains of 3.01 dBi at 2.6 GHz (the receiving frequency) and 5.74 dBi at 2.95 GHz (the transmitting frequency). Good agreement between the measurement and simulation for the return loss and radiation patterns is achieved. The proposed antenna has dual-band characteristics, simple structure, low profile, and omni-directional azimuth radiation pattern. It is suitable for aircraft both receiving and transmitting signals and frequency division duplex (FDD) applications.
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