# IEEE Antennas and Wireless Propagation Letters

## Filter Results

Displaying Results 1 - 25 of 420

Publication Year: 2011, Page(s):C1 - 1680
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• ### IEEE Antennas and Wireless Propagation Letters publication information

Publication Year: 2011, Page(s): C2
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• ### Editorial: Status of AWPL

Publication Year: 2011, Page(s):1 - 2
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• ### Wideband Omnidirectional and Compact Antenna for VHF/UHF Band

Publication Year: 2011, Page(s):3 - 6
Cited by:  Papers (13)
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A wideband omnidirectional and compact (WIBOC) antenna is proposed in this letter. The antenna is constructed with a combination of an upper metallic plane with an elliptic shape, a rectangular metallic plane placed underneath, and a discone monopole antenna used as an excitator located between these metallic planes. This antenna provides broadband characteristics and omnidirectionnal radiation pa... View full abstract»

• ### Enhancing Frequency-Scanning Response of Leaky-Wave Antennas Using High-Impedance Surfaces

Publication Year: 2011, Page(s):7 - 10
Cited by:  Papers (11)
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The use of high-impedance surfaces (HISs) to increase the frequency-scanning sensitivity of hollow leaky-wave antennas (LWAs) is presented. The LWA consists of a hollow rectangular waveguide with one of its narrow walls replaced by a partially reflective surface, and it is loaded with a metallodielectric HIS to increase its beam-scanning response. Theoretical results based on a simple transverse e... View full abstract»

• ### Tunable High-Impedance Surface With a Reduced Number of Varactors

Publication Year: 2011, Page(s):11 - 13
Cited by:  Papers (25)
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An efficient approach for obtaining an active high- impedance surface (HIS) is presented. The novel design allows us to synthesize a tunable HIS by drastically reducing the number of the active elements employed. The conventional loading of a single varactor for each of the unit cells of the frequency selective surface (FSS) is overcome by connecting the FSS unit cells to a feeding network located... View full abstract»

• ### Multiband and Compact WCDMA/WLAN Antenna for Mobile Equipment

Publication Year: 2011, Page(s):14 - 16
Cited by:  Papers (8)
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A compact, multiband, planar, and low-profile wide- band code division multiple access (WCDMA)AVLAN antenna is presented in this letter. A metallized dielectric loading technique using a low-cost FR4-type material has been implemented to achieve a small footprint of 18 × 21 mm2 instead of using expensive ceramics. The WCDMA/WLAN antenna achieves multiband operation with good impe... View full abstract»

• ### Indoor Radio Noise Long-Term Measurements in Medium Wave Band in Buildings of City Areas in the North of Spain

Publication Year: 2011, Page(s):17 - 20
Cited by:  Papers (6)
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This letter presents a study of indoor radio noise levels in the Medium Wave band up to 2 MHz, based on field trials. The work is based on long-term measurements carried out in buildings located in the areas of Bilbao and Vitoria in the north of Spain. The studied channels are centered in 630, 675, 1035, 1242, 1359, 1620, 1720, and 1910 kHz. The noise variation between daytime and nighttime and th... View full abstract»

• ### Physical Optics Scattering of Waves by a Half-Plane With Different Face Impedances

Publication Year: 2011, Page(s):21 - 24
Cited by:  Papers (4)
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The theory of physical optics is extended for the diffraction problem of waves by a half-plane with different face impedances. The kernel of the modified theory of physical optics integral is expressed in terms of the Maliuzhinets function. The resultant integral is evaluated asymptotically for large values of the wavenumber. The results are examined numerically. View full abstract»

• ### Multiband Antenna for Wireless USB Dongle Applications

Publication Year: 2011, Page(s):25 - 28
Cited by:  Papers (32)
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In this letter, a novel monopole antenna for USB dongle applications is proposed. It is composed of a monopole and an inverted U-shaped parasitic radiator. The monopole acts as a feeding structure in the 2.4-GHz band while serving as a main radiator in the 5.5-GHz band. By properly combining the antenna resonance and the ground resonance, the proposed antenna has a wide bandwidth at f1.... View full abstract»

• ### A Simple CRLH LWA Circuit Condition for Constant Radiation Rate

Publication Year: 2011, Page(s):29 - 32
Cited by:  Papers (19)
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A simple analytical condition for the radiation resistance and conductance (R, G) of an equivalent composite right/ left-handed (CRLH) balanced leaky-wave antenna unit-cell is pro- posed to achieve a constant radiation rate. Similar to the CRLH "balanced condition," which allows a smooth phase transition from the left-handed to the right-handed frequency regions, the pro- posed R-G condition provi... View full abstract»

• ### Tunable Near-Field Focused Circular Phase-Array Antenna for 5.8-GHz RFID Applications

Publication Year: 2011, Page(s):33 - 36
Cited by:  Papers (26)
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An RFID-compatible focused circular phase-array antenna working at 5.8 GHz is proposed, which is theoretically analyzed and experimentally demonstrated. It consists of 24 half-wavelength dipole antennas placed on three circles. Using only two phase-shifters, a tunable focal spot in the range of 0.4-1 m (10λ) is obtained. The antenna system is analyzed using the Huygens-Fresnel theory, which... View full abstract»

• ### Axisymmetric Resonant Lens Antenna With Improved Directivity in Ka-Band

Publication Year: 2011, Page(s):37 - 40
Cited by:  Papers (9)
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A compact-size shaped dielectric lens antenna (DLA) is designed and optimized in Kα-band (29.5 GHz) using a new synthesis tool based on the combination of a genetic algorithm and BoR-FDTD solver. The antenna is fabricated in Rexolite and fed by a circular waveguide with a flange and an optimized integrated dielectric taper. As demonstrated, the proposed antenna combines features intrinsic t... View full abstract»

• ### Multimode Multiband (VHF/UHF/L/802.11a/b) Antennas for Broadcasting and Telecommunication Services

Publication Year: 2011, Page(s):41 - 44
Cited by:  Papers (5)
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Multimode multiband (MMMB) antennas are presented for broadcasting and telecommunication services. The proposed antennas are composed of three different types and contact with a portable media player (PMP) case (εr = 3.2), which is used as a substrate for the compact design. Also, the designed antennas have good impedance matching and radiation characteristics for Digital Video B... View full abstract»

• ### A Wideband Dual-Sleeve Monopole Antenna for Indoor Base Station Application

Publication Year: 2011, Page(s):45 - 48
Cited by:  Papers (20)
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The design and enhanced bandwidth performance of a dual-sleeve monopole antenna for indoor base station application is presented. By a top-loading circular patch shorted to the ground plane through four shorting probes, the size reduction is achieved. The dual-sleeve structure is successfully employed to improve the impedance bandwidths through achieving another two resonant modes. A measured impe... View full abstract»

• ### Dual-Band Circularly Polarized Stacked Annular-Ring Patch Antenna for GPS Application

Publication Year: 2011, Page(s):49 - 52
Cited by:  Papers (26)  |  Patents (1)
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A dual-band circularly polarized stacked annular-ring patch antenna is presented in this letter. This antenna operates at both the GPS L1 frequency of 1575 MHz and L2 frequency of 1227 MHz, whose frequency ratio is about 1.28. The proposed antenna is formed by two concentric annular-ring patches that are placed on opposite sides of a substrate. Wide axial-ratio bandwidths (larger than 2%), determi... View full abstract»

• ### Modeling and Design of Millimeter-Wave High $Q$-Factor Parallel Feeding Scheme for Dielectric Resonator Antenna Arrays

Publication Year: 2011, Page(s):53 - 55
Cited by:  Papers (6)
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A planar, high-Q-factor, low-cost, and low-profile waveguide feeding scheme, based upon the substrate integrated waveguide (SIW) concept, for a rectangular dielectric resonator antenna (RDRA) at the millimeter wave (mmW) band is presented. It helps to enhance the overall antenna radiation efficiency and avoid any disturbance caused by conventional feeding schemes. Furthermore, a simple transmissio... View full abstract»

• ### Halved Vivaldi Antenna With Reconfigurable Band Rejection

Publication Year: 2011, Page(s):56 - 58
Cited by:  Papers (16)  |  Patents (1)
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This letter presents a Vivaldi antenna having the capability of dynamically rejecting interferers, mainly aiming at multistandard communication with dynamic frequencies allocation. Only half of the Vivaldi is used and placed over a ground plane, which is suitable to vehicular communication. The rejection Alter is integrated to the antenna real estate and consists of two microstrip resonators and t... View full abstract»

• ### Filter-Antenna Module Using Substrate Integrated Waveguide Cavities

Publication Year: 2011, Page(s):59 - 62
Cited by:  Papers (37)  |  Patents (1)
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A design procedure for filter-antenna modules based on substrate integrated waveguide cavities is presented in this letter. The filter-antenna module is modeled as an asynchronously tuned coupled-resonator circuit in which the last resonator also contains the radiating element. The design of the filter-antenna module is based on the classical process applied to obtain filters through the use of co... View full abstract»

• ### Compact Expressions for Efficiency and Bandwidth of Patch Antennas Over Lossy Magneto-Dielectric Materials

Publication Year: 2011, Page(s):63 - 66
Cited by:  Papers (23)
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Closed-form formulas for calculating the radiation efficiency and bandwidth of patch antennas over lossy magneto-dielectric materials are proposed by using the cavity model. These expressions agree well with simulations. It is well known that the bandwidth of microstrip antennas is enhanced when the dielectric substrate is replaced by a magnetic one. Here, we confirm more generally that not only t... View full abstract»

• ### Miniaturized UWB Monopole Microstrip Antenna Design by the Combination of Giusepe Peano and Sierpinski Carpet Fractals

Publication Year: 2011, Page(s):67 - 70
Cited by:  Papers (71)  |  Patents (6)
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A fractal monopole antenna is proposed for the application in the UWB frequency range, which is designed by the combination of two fractal geometries. The first iterations of Giusepe Peano fractal are applied on the edges of a square patch, and a Sierpinski Carpet fractal is formed on its surface. The feed circuit is a microstrip line with a matching section over a semi-elliptical ground plane. Th... View full abstract»

• ### The Phoenix Cell: A New Reflectarray Cell With Large Bandwidth and Rebirth Capabilities

Publication Year: 2011, Page(s):71 - 74
Cited by:  Papers (54)
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This letter presents a new phase-shifting cell for linearly polarized reflectarray applications. It provides a nearly 360° phase range and naturally comes back to its initial geometry after the phase cycle has been achieved. A complete analysis of the resonating mechanism is given, and a low dispersion (<;30°/GHz) is demonstrated over a large bandwidth (18%) in simulation. View full abstract»

• ### Dual-Polarized Coupled Sectorial Loop Antennas for UWB Applications

Publication Year: 2011, Page(s):75 - 78
Cited by:  Papers (19)  |  Patents (1)
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In this letter, we present two compact dual-polarized UWB antennas based on the coupled sectorial loops antenna (CSLA) concept. The first antenna is a directional dual-polarized cavity-backed asymmetric CSLA for radar and communications applications. The antenna has the added ad vantage of easily controllable gain compared to conventional dual-polarized antennas. The second antenna design is a pla... View full abstract»

• ### A Loaded Wideband Linearly Tapered Slot Antenna With Broad Beamwidth

Publication Year: 2011, Page(s):79 - 82
Cited by:  Papers (9)
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A novel wideband linearly tapered slot antenna (LTSA) with broad beamwidth is presented. In the proposed design, the basic microstrip-fed LTSA is loaded with a joint action structure (JAS) comprising tapered slots and patches. Compared to the basic unloaded version, the loaded LTSA (LLTSA) exhibits improved impedance characteristic in the lower band. Additionally, broad beams in principal planes, ... View full abstract»

• ### Application of the Active Element Pattern Method for Calculation of the Scattering Pattern of Large Finite Arrays

Publication Year: 2011, Page(s):83 - 86
Cited by:  Papers (2)
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This letter extends the concept of the active element pattern method that is used to solve the array radiation problem when scattered fields of large finite arrays are calculated. We name this method the original induced element pattern method (OIEPM). The theoretical derivation of the method is presented. In addition, to overcome the limitation and simplify the operation of the OIEPM, an improved... View full abstract»

## Aims & Scope

IEEE Antennas and Wireless Propagation Letters is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Christophe Fumeaux
School of Electrical and Electronic Engineering