Us8928544b2 us31,304 us2014a us8928544b2 us 8928544 b2 us8928544 b2 us 8928544b2 us 2014 a us2014 a us 2014a us 8928544 b2 us8928544 b2 us 8928544b2 authority us united states prior art keywords dielectric resonator antenna resonator antenna substrate dielectric prior art date 20110221 legal status the legal status is an assumption. Ieee antennas and wireless propagation letters popular. Radiation efficiency improvement of zerothorder resonator. In order to design an electrically smaller mtm and make a progress toward. The antenna has a directional radiation pattern and improved bandwidth. Based on a crlh transmissionline unit cell, an antenna was designed and fabricated, and found to provide a 10db impedance bandwidth of 5. Frequency reconfigurable antenna with triple linear.
Figure 12 from hybrid mode wideband patch antenna loaded. A compact zeroth order resonating an pier journals. Anomalous resonance frequency shifts in a hybrid cavitynanoantenna system freek ruesink,1 hugo m. Far reddetuned from antenna resonance, q h approaches the bare cavity. Flroad eplane beamwidth zerothorder resonance patch antennaa. The simulated and measured results show that the antenna has the active reflection coefficient less than 9. An edge feed rectangular patch antenna is designed for 30 ghz as shown in fig. Two metal walls are put at the bilateral sides of an original microstrip antenna in the eplane xozplane. Iosr journal of electronics and communication engineering iosrjece vol. The width of this hybrid resonance, however, varies greatly with detuning. In the aforementioned publication, he speculated on the existence of materials whose permittivity. Hybrid zerothorder resonance patch antenna with improved half power. Zeroth order resonator antenna the efficient operation of a zor antenna is viable.
The zerothorder resonant antenna has a monopolar radiation pattern, which is similar to that of the traditional monopole antenna. For comparison purpose the designed tm 010 mode antenna is fabricated as shown in fig. It is demonstrated that a theory of zeroorder mode resonator zor metamaterial mtm structure can be used for the development of a novel class of applicators for microwave thermotherapy, for example, for hyperthermia in cancer treatment or for physiotherapy. We have designed rectangular directional patch antenna based on eng firstpositiveorder resonator fpor. Pdf hybrid zerothorder resonance patch antenna with improved. Figure 11 from hybrid mode wideband patch antenna loaded. In radio science meeting joint with aps symposium, 20 usncursi pp. Since the radiation mechanism of the mzr antenna is the same as that of a conventional small loop antenna, the mzr antenna radiates to broadside. Metamaterial antenna arrays with radiation pattern shaping and beam switching. A tm 010 mode can be generated for this patch antenna by conventionally using patch of. Broadening the beamwidth of microstrip antenna by the.
In addition, by using the zeroth order and first order resonance modes the antenna is designed for dual band operation with an arbitrary selection of two resonance frequencies. A zerothorder resonance patch antenna for dual band. By dividing the incident power to two modes, the plane beamwidth of a mode can simply be controlled. The concept of mtm phenomenon was first comprehensively introduced by veselago in 1968 4. Then the proposed staircase structure is inserted on the patch antenna by creating a slot.
Design of compact patch antenna based on zerothorder. Considering the coupling between two patches in the design, an antenna with a size about 54. Hybrid zeroth order resonance patch antenna with broad eplane beamwidth, ieee trans. Figure 4b shows this dependence of q h the hybrid q on detuning more explicitly. Resonant antenna article about resonant antenna by the. To obtain the broad eplane beamwidth of a patch antenna, a tm 010. An implantable zerothorder resonance zor antenna is proposed. A bent crossdipole feed with pin diodes and varactor diodes inserted into its four arms at different altitudes is. Abstractnew zerothorder resonators zors are utilized as parasitic elements to enhance a. Iosr journal of dental and medical sciences iosrjdms iosr journal of computer engineering iosrjce iosr journal of electrical and electronics engineering iosrjeee. Compact zerothorder resonator zor antennas epj applied. A staircase structure loaded zor antenna for millimeter. The hexagonal shape of a top patch on a mushroom structure makes not only directcurrent paths between the two ends of the patch but also roundcurrent paths along the outside of the patch, thereby widening the resonance frequency of the mushroom mtm.
Broadening the bandwidth and improving the gain of the crlh zeroth order resonance antenna in the form of a microstrip patch capacitively coupled with a ring mushroom 1014352460000 2014. Zeroth order resonance loop antenna jaegon lee and jeonghae lee abstracta new type of lowpro. Hybrid mode wideband patch antenna loaded with a planar metamaterial unit cell. Compact circularly polarized patch antenna using a. When this tl is used as a zeroth order resonator zor, it allows a constant amplitude and phase resonance across the entire resonator. Hybrid zerothorder resonance patch antenna with broad e. Order resonance zor circular microstrip patch antenna is proposed to have a monopole antenna pattern due to. Hybrid zerothorder resonance patch antenna with improved half power beamwidth free download as pdf file. In this paper, a hybrid zerothorder resonance zor patch antenna with a broad plane beamwidth is presented. The size of the prototype patch antenna is 20 x 20 mm. A novel magnetoelectric dipole antenna with wide hplane beamwidth, triplelinear polarisation and frequency reconfiguration is proposed for 5g communications. Some works demonstrate that rectangular eng zerothorder resonator zor antennas can realize omnidirectional radiation pattern, which are implemented by using. In, a hybrid zerothorder resonance zor patch antenna also combined a tm010. Hybrid zerothorder resonance patch antenna with improved half power beamwidth doi.
In this study, a method to broaden the beamwidth of an aperture couple feed microstrip antenna is investigated. To generate the mode and the zor mode, simultaneously, the mushroom antenna is inserted in a. Thus, the radiation patterns of the zor antennas are omnidirectional. By using chip inductors, an epsilon negative zor was generated, while achieving an extremely compact antenna size. Moreover, the loaded elements also contribute to the radiation, which is the major advantage of this received 24 december 2012, accepted 21 february 20, scheduled 12 march 20 corresponding author. Theoretical investigation of rectangular patch antenna.
Abstracta compact zeroth order resonance zor antenna based on composite right. Each spectrum shows a broad peak at the bare antenna resonance and a narrow peak close to the bare cavity resonance. Inset microstriplinefed circularly polarized microstrip antennas. Novel applicators for local microwave hyperthermia based. In, a hybrid zerothorder resonance zor patch antenna also combined a tm 010. Radioengineering december 2009, volume 18, number 4. Broadband hybrid antenna with directional radiation. The antenna was designed to achieve a broadside patchtype radiation pattern. Compared with the previously proposed counterparts such as the zeroth order resonating antennas and rectangular patch antennas on a juxtaposed dpseng pair, the radiation efficiency of the psec or ppsec based rectangular patch antenna is always guaranteed when the antenna size is reduced, as long as the loss of the eng metamaterial can be small. Npv tl can thus form, if short enough, an electrically small zerothorder resonator zor antenna, in case that sufficient radiation is enabled.
A novel compact wideband patch antenna is presented. Flroad eplane beamwidth zerothorder resonance patch. Miniaturization of antenna for wireless application with. Lee, hybrid zerothorder resonance patch antenna with broad eplane beamwidth, ieee trans. Here, we examine what confinement and q can be reached in these hybrid systems, and we address their merits for various applications in classical and quantum optics. Abstracthybrid cavityantenna systems have been proposed to combine the subwavelength light confinement of plasmonic antennas with microcavity quality factors q.
Tlshaped zerothorder resonators loaded microstrip antenna. Femius koenderink,1,2 and ewold verhagen1, 1fom institute amolf, science park 104, 1098 xg amsterdam, the netherlands 2institute of physics, university of amsterdam, p. The main idea of creating such an applicator is to generate and radiate a plane electromagnetic em wave into the treated biological. Frequency reconfigurable patch antenna is achieved by inscribing slots in rectangular radiator and connecting the patch surface using pin diodes. An compact omnidirectional antenna of circular polarization consists of four bended monopoles were studied in 9, and the profile is 9. Metamaterials and metasurfaces for designing metadevices. Radiation patterns of the antenna at various frequencies are given in. Request pdf zeroth order resonance loop antenna a new type of lowprofile. Some patch antenna and category b electrical power amplifier. Also by checking for infinite ground the antenna shows similar resonances. A microstrip antenna utilizing zerothorder resonance of epsilon negative transmission line was presented in 8 and the profile of antenna is only 3. Hybrid, zerothorder resonance zor mode, metamaterials. Figure 4b shows the simulated and measured radiation pattern of mzr antenna.
The antenna consists of two simple patch pairs with opposite phase feed. Modeling of an electromagnetic bandgap antenna olule. Since the zerothorder resonance frequency is independent of a physical. In order to obtain wider radiation beamwidth bw in two orthogonal. To generate the tm 010 mode and the zor mode simultaneously, a mushroom antenna and a rectangular patch antenna with an etched. The vertical current on the metal walls is induced by efield from the horizontal current on the radiating patch of the microstrip antenna. Hybrid zerothorder resonance patch antenna with improved.
In this study, the radiated dipoles are designed with the arcshaped planes to exhibit wide hplane performance. If the directional radiation pattern of a tm010 mode and the omnidirectional. In this paper, the hybrid antenna utilizing epsilon negative zerothorder resonanceeng zor and mode is presented. In order to obtain the broad beamwidth of an antenna, a mode and a zor mode are combined. Mode m 0 represents zerothorder resonator with infinite guided wavelength. To date, various types of crlh tls have been investigated since the first proposal.
Hybrid cavityantenna systems for quantum optics outside. In this paper, a hybrid metamaterial patch antenna having a broad eplane beamwidth is presented. A new type of hybrid resonant circuit model is investigated theoretically and. He named these materials lefthanded lh, as the e, h, and k vectors of the studied em wave formed a lefthanded triad if the wave propagated through. The combination of the slotted ground plane and tly5 substrate with a feed line in essence acts like a slot antenna. Infinite wavelength resonant antennas with monopolar radiation pattern based on periodic structures. Due to the two clearance circles etched in the circular radiation patch and. A low profile zeroth order resonator antenna for 80 ghz chiptochip communication. To generate the tm010 mode and the zor mode simultaneously, a mushroom antenna and a rectangular patch antenna with an etched. Ultrasmall dualband metamaterial antennas based on. The first antenna has directional pattern and is triband at 1760, 2550 and 3850 mhz with gains 2. Abstract an ultrawideband patch antenna plays a major role in communications. Bandwidth improved hybrid metamaterial antenna using folded parasitic patch. A broadband hexagonalshaped metamaterials mtmsbased zerothorder resonant zor antenna was designed and fabricated.
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