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In this paper, a novel ldquogreenrdquo inkjet-printed monopole antenna topology for integrated RFID-reader and cellular communication functionalities is presented. The antenna is loaded with a parasitic strip to fulfil the design requirements for the required dual-band operation. The design characteristics of the antenna are verified for paper-based substrates through extensive simulated parametric...
A wideband planar monopole antenna with four-elements L-shaped slots on the ground plane is proposed and fabricated. The bandwidth of the antenna is 180 MHz (75 %) at 2.4 GHz and it shows a dipole-like radiation pattern with a high efficiency. It can be applied to ISM frequency band wireless communication system.
In this paper, two printed multiband fractal monopole antennas using the 1st and 2nd iteration of Minkowski Island geometry are proposed for WLAN communications. The monopole antennas have compact size of 28 times 18 mm2 and 21.5 times 18 mm2, respectively. The proposed antennas with different sizes of the ground plane have also been studied through numerical simulations in Ansoft HFSS. It is found...
Ultrawide-band (UWB) is a new technology that transmits very low energy levels broadband pulses allowing for short-range high-bandwidth communications. In some environments, UWB systems require the inclusion of band-rejection filters to avoid the possible interference from pre- established wireless local area networks (WLAN), allocated from 5.15 GHz to 5.825 GHz. Recently, the required band rejection...
A reconfigurable narrowband antenna integrated with a wideband monopole, suitable for cognitive radio applications, is proposed in this study. A set of matching circuits are designed to demonstrate that the structure can be tuned to wide range of frequencies in the narrowband mode of operation. The integrated structures have been manufactured and measured. The measured results agree well with the...
In this paper a wire inverted L-shape monopole antenna is considered as the source. This antenna is not matched when it is placed above a PEC ground plane. Using three different artificial magnetic conductor (AMC) ground planes the antenna is not only matched at the desired frequency but its input impedance bandwidth is also increased significantly. Effects of the ground plane size are also studied.
A new multiband antenna based on the traditional fractal equilateral Sierpinski monopole is presented in this paper. Sierpinski monopoles are resonant, log-periodic and multi-band antennas. For example, a traditional two-stage Sierpinski monopole provides three bandwidths. In this work, two of these bandwidths are increased adding four conductor triangles to a traditional two-stage Sierpinski monopole...
In this paper, the DVB-H antenna for the UHF band (470 ~ 862 MHz) is designed as an intenna for the potable media player (PMP) applications. The authors used 3-dimensional inverted L-shaped monopole for the wideband operation. Also, we used simple broadband matching circuit which is composed of the chip inductors and capacitors. The antenna peak gain is higher than 0.3 dBi in overall UHF bands (470...
This paper presents an alternative approach to decrease the mutual coupling between two arbitrary antennas. In this design, using a ring hybrid of arbitrary power division as the eigenmode feeding network, two arbitrary closely-spaced antennas can be decoupled. The input port matching can then be performed independently. A printed monopole antenna and a planar inverted F-antenna (PIFA) operating at...
As is well known, an electric radiator field is divided conventionally into three regions: a near region (an induction region or Fraunhofer one), an intermediate region (or Fresnel one) and a far region (a radiating one). Until recently radiators properties in a near region arouse a weak interest among antennas creators. But now these questions importance increased in view of problems of facilities...
A tri-band monopole antenna is presented, which employs metamaterial loading on a defected ground plane in order to create an antenna covering the WiFi and WiMAX bands. The measurements show monopolar-like radiation patterns at 3.50 GHz and 5.50 GHz and orthogonal dipolar-like patterns at 2.44 GHz. High radiation efficiencies are obtained in all three bands, despite the small size of the antenna,...
Left-handed (LH) loading has been applied to printed wire antennas, such as dipole antennas and the loop antenna. These antennas are based on periodic LH cells. The resonant frequency depends on the components of the LH cells, which can be used to develop small antennas. Moreover, LH loading provides new capabilities in the design of wire antennas. For example, a meandered dipole with LH loading provides...
A penta-band internal monopole antenna with a novel parasitic strip suitable for GSM850/GSM900/DCS/PCS/UMTS2100 applications is constructed and studied. The proposed antenna is located at the bottom of the edge of the ground plane in main printed circuit board (PCB). It has antenna matching network and one parasitic strip using the new conception of the parasitic mode and second mode. It is an internal...
This paper presents the design of a low profile, wideband, vertically polarized antenna to be used on an unmanned aerial vehicle (UAV) or airplane in place of multiple monopole antennas. The new antenna was modeled in Microwave Studio (MWS) and optimized with a genetic algorithm (GA). The GA minimized S11middot from 800 MHz to 2.4 GHz. Experimental measurements for S11middot and the antenna pattern...
In this paper, we present a novel two monopole antenna for LTE band class 13 (746 MHz-787 MHz, for MIMO application) / GPS (at L1 band:1565 MHz-1585 MHz) / PCS (1810 MHz-1990 MHz) / UMTS(1920 MHz-2170 MHz) band operations. The proposed antennas are composed of two conventional monopole antennas and these antennas are connected by suspended line to reduce the mutual coupling between the antenna elements...
In this paper a novel wideband printed monopole antenna has been proposed, fabricated and tested for wideband signal reception in the 530 MHz ~3 GHz. And the proposed antenna can be applied to receive the signal on DVB band, as well as GSM/DCS/PCS/UMTS and WLAN bands. The proposed antenna has an advantage of simple configuration, low profile, easy to fabricate and low cost, therefore it will be an...
The characteristics of proposed antenna such as return loss and radiation patterns from both sides of measurement and calculation were obtained. From these results, it is understood that proposed antenna has both functions of the PMA and the PSA with single-feed structure. Therefore, it seems that proposed antenna is an effective planar antenna in order to improve the receiving signal quality. In...
In this work, a specific type of UWB monopole antenna is presented. This type of antenna makes use of a dielectric coating for the monopole which is used both as a radome and to configure the radiation characteristics of the antenna itself. Making use of a dielectric material with a relatively high dielectric constant but easy to work with (for manufacturing purposes), fields radiated from the monopole...
This paper discusses application of the piecewise sinusoidal (PWS) basis function (BF) over a chain of several wire segments, i.e. as a multiple domain basis functions. The usage of PWS BF is compared to results based on the piecewise linear (PWL) basis functions. An example of meander monopole demonstrates the advantages associated with the PWS BF.
In this paper, the planar wideband monopole antenna operated 30 MHz to 2000 MHz is proposed. The proposed antenna is folded to reduce the size and uses the tapered resistively loadings for the wideband operation. In design process, the magnitude of the resistively loadings are optimized. In addition, the dimension of the antenna is optimized using the parametric studies. Finally, the simulated and...
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