Academic literature on the topic 'Shorted patch antennas'

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Journal articles on the topic "Shorted patch antennas"

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Shao, Zijian, and Yue Ping Zhang. "Differential Shorted Patch Antennas." IEEE Transactions on Antennas and Propagation 67, no. 7 (2019): 4438–44. http://dx.doi.org/10.1109/tap.2019.2911394.

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Holub, Alois, and Milan Polívka. "Vertically meander-folded, shorted-patch antennas." Microwave and Optical Technology Letters 51, no. 12 (2009): 2938–42. http://dx.doi.org/10.1002/mop.24790.

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Malekpoor, Hossein, and Shahrokh Jam. "Enhanced Bandwidth of Shorted Patch Antennas Using Folded-Patch Techniques." IEEE Antennas and Wireless Propagation Letters 12 (2013): 198–201. http://dx.doi.org/10.1109/lawp.2013.2244555.

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Langley, Professor Richard. "Hidden Antennas for Vehicle Telematics Systems." Journal of Navigation 54, no. 3 (2001): 337–44. http://dx.doi.org/10.1017/s0373463301001515.

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This paper describes three different antenna systems for mobile vehicle applications. The antennas are either patches or derivatives in all cases. The first is a dual-band telephone antenna with a low profile and wide bandwidth. Operating at 900 MHz and 1800 MHz, with a VSWR of better than 1·7, it is a hybrid construction combining a monopole with a top-loading patch shorted to the ground-plane. Extra-shorted pins provide the upper frequency band coverage. It provides monopole radiation characteristics and can be hidden under a plastic panel or mounted on the vehicle roof. The second is a microstrip patch antenna integrated into a laminated glass windscreen for a vehicle. It is fed using a coplanar waveguide feed printed on the innermost layer of the glass, avoiding the need for a contacting feed within the laminate. The patch and ground plane are meshed for manufacturing in the glass to avoid distorting the heat profile when the glass is shaped and laminated. The patch is easily fed from inside the vehicle and is potentially a very low cost design. The final antenna discussed is a dual-band patch antenna specifically designed for the Globalstar satellite telephone system at 1·6 GHz and 2·45 GHz. It also covers the Iridium band at 1·6 GHz. A single circularly polarised patch is used. Dual-band operation results from truncating the corners of the square patch and judiciously placed slots to achieve a band spacing of 1·5.
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Lin, Y., and L. Shafai. "Characteristics of concentrically shorted circular patch microstrip antennas." IEE Proceedings H Microwaves, Antennas and Propagation 137, no. 1 (1990): 18. http://dx.doi.org/10.1049/ip-h-2.1990.0004.

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Chen, H. D. "Broadband designs of coplanar capacitively-fed shorted patch antennas." IET Microwaves, Antennas & Propagation 2, no. 6 (2008): 574–79. http://dx.doi.org/10.1049/iet-map:20070312.

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Guo, Yong-Xin, Kwai-Man Luk, and Kai-Fong Lee. "Comparison between symmetrical and asymmetrical partially shorted patch antennas." Microwave and Optical Technology Letters 28, no. 3 (2000): 214–16. http://dx.doi.org/10.1002/1098-2760(20010205)28:3<214::aid-mop20>3.0.co;2-r.

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Malekpoor, Hossein, and Shahrokh Jam. "ULTRA-WIDEBAND SHORTED PATCH ANTENNAS FED BY FOLDED-PATCH WITH MULTI RESONANCES." Progress In Electromagnetics Research B 44 (2012): 309–26. http://dx.doi.org/10.2528/pierb12081607.

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Vithanawasam, Chamath Kalanaka, Yi Lung Then, and Hieng Tiong Su. "A review of microstrip antenna designs for TV white space applications." Indonesian Journal of Electrical Engineering and Computer Science 19, no. 2 (2020): 855. http://dx.doi.org/10.11591/ijeecs.v19.i2.pp855-863.

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&lt;p&gt;&lt;span&gt;A review on prominent microstrip antennas fabricated for TV White Space applications is presented. This paper will delve into some of the most notable microstrip antenna designs in this frequency band that have come up in recent years. They will be analyzed to identify their strengths and weaknesses, and feedback is provided on their perceived usefulness. These antennas are designed with specific intentions, such as being placed in areas prone to harsh weather, or for long distance communications. One of the most recent antenna types to enter mainstream discussion is the microstrip patch antenna, which can easily be altered to fit various applications. Methods of connectivity such as TV White Space are enthusiastically used in various applications pertaining to connectivity and various microstrip antennas have been designed for this purpose. A conclusion was reached on the compact shorted printed monopole antenna being the most plausible choice from the antennas that have been considered and discussed.&lt;/span&gt;&lt;/p&gt;
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Chair, Ricky, K. F. Lee, and K. M. Luk. "Bandwidth and cross-polarization characteristics of quarter-wave shorted patch antennas." Microwave and Optical Technology Letters 22, no. 2 (1999): 101–3. http://dx.doi.org/10.1002/(sici)1098-2760(19990720)22:2<101::aid-mop7>3.0.co;2-x.

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Dissertations / Theses on the topic "Shorted patch antennas"

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DeJean, Gerald Reuben. "Design of Compact Antennas in Multilayer Technology for Wireless Communications / WLAN Applications." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6977.

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Various compact and packaging-adaptive antennas have been designed for practical wireless communications systems such as global system of mobile communications (GSM), Bluetooth Industrial-Scientific-Medical (ISM) devices, IEEE802.11a WLAN, and Local Multipoint Distribution Systems (LMDS) applications. First, compact stacked patch antennas using LTCC multilayer technology have been presented. A set of design rules is established for the purpose of designing optimized bandwidth compact antennas on LTCC multilayer substrates. To verify its effectiveness, the proposed design rules are applied to three emerging wireless bands. The return loss and the impedance bandwidth are optimized for all three bands. A maximum bandwidth of 7% can be achieved for an antenna operating in the LMDS band. Furthermore, folded shorted patch antennas (SPAs) are designed to significantly reduce the resonant frequency of a standard patch antenna. The design methodology of this structure starts with a conventional half-wave and through a series of procedures, evolves into a smaller, lambda/8 wavelength resonant length structure. Upon varying the height of the lower patch, the resonant length can be reduced to lambda/16. A comparison between a folded SPA and a standard SPA validates the folding technique proposed in this document. The folded SPA is applied to the 2.4 GHz ISM band. The measured results are in good agreement with simulated results. This antenna can be implemented into 3D packages using multilayer laminates such as LTCC or LCP.
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Kawser, Mohammad Tawhid. "Investigation of a Novel Dual Band Microstrip/Waveguide Hybrid Antenna Element." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/33660.

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Microstrip antennas are low in profile, light in weight, conformable in structure and are now developed for many applications. The main difficulty of the microstrip antenna is its narrow bandwidth. Several modern applications like satellite communications, remote sensing and multi-function radar systems will find it useful if there is dual band antenna operating from a single aperture. Some applications require covering both transmitting and receiving frequency bands which are spaced apart. Providing multiple antennas to handle multiple frequencies and polarizations becomes especially difficult if the available space is limited as with airborne platforms and submarine periscopes. Dual band operation can be realized from a single feed using slot loaded or stacked microstrip antenna or two separately fed antennas sharing a common aperture. The former design, when used in arrays, has certain limitations like complicated beam forming or diplexing network and difficulty to realize good radiation patterns at both the bands. The second technique provides more flexibility with separate feed system as beams in each frequency band can be controlled independently. Another desirable feature of a dual band antenna is easy adjustability of upper and lower frequency bands. This thesis presents investigation of a new dual band antenna, which is a hybrid of microstrip and waveguide radiating elements. The low band radiator is a Shorted Annular Ring (SAR) microstrip antenna and the high band radiator is an aperture antenna. The hybrid antenna is realized by forming a waveguide radiator in the shorted region of the SAR microstrip antenna. It is shown that the upper to lower frequency ratio can be controlled by the proper choice of various dimensions and dielectric material. Operation in both linear and circular polarization is possible in either band. Moreover, both broadside and conical beams can be generated in either band from this antenna element. Finite Element Method based software, HFSS and Method of Moments based software, FEKO were employed to perform parametric studies of the proposed dual band antenna. The antenna was not tested physically. Therefore, in most cases, both HFSS and FEKO were employed to corroborate the simulation results.<br>Master of Science
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Liou, Yen-Yu, and 劉彥佑. "Studies of Dual-Band and Broadband Shorted Planar Patch Antennas for Wireless Communication Applications." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/67214005569821492146.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>94<br>This thesis presents the designs of a single-feed shorted triangular patch antenna with dual-band and broadband operations. The thesis is mainly divided into three topics. First, the design of a shorted triangular patch antenna with dual-band operation is presented. By placing two shorting walls at the opposite edges of a tip-truncated triangular patch antenna with a V-shaped slot, two different resonant modes can be excited simultaneously. The two resonant modes can radiate a conical monopole-like pattern and a broadside pattern, respectively. Second, the method of coupling two resonant modes with similar radiation patterns is used to achieve the broadband antenna design. For the proposed design, the required antenna height is less than 0.06 free-space wavelengths, and the 10 dB impedance bandwidth is more than 25 %. In addition, a prototype with the operating bandwidth capable of covering UMTS and ISM bands (1920 ~ 2483 MHz) is implemented. Finally, the compact design of a shorted triangular patch antenna with dual-band and broadband operations is presented. For the shorted triangular patch antenna, when the antenna area is reduced by symmetrically halving the patch size, the operation frequency and the impedance bandwidth have not obvious variations. Consequently the patch size can be roughly reduced to 50 %. The simulations for the studied antennas in the thesis are also performed by using electromagnetic softwares, and they will be compared with the experimental results.
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Agrela, Jenny Manuela Gouveia. "Circuitos de alimentação para agrupamentos de antenas." Master's thesis, 2011. http://hdl.handle.net/10400.13/1667.

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Este trabalho teve como objectivo principal o estudo e desenvolvimento de agrupamentos planares que permitissem o controlo do diagrama de radiação. Para isso, foram construídos dois agrupamentos com diferentes configurações, constituídos por 64 antenas S-P (Shorted-Patch) para os 2,42 GHz, sendo necessário para tal a análise de diversas técnicas para a sua implementação. A alimentação dos agrupamentos foi realizada através da utilização de um conjunto de 9 combinadores/divisores de potência de 8:1 portas, onde a interligação destes com as antenas foi feita através de cabos coaxiais RG58. De modo a prever e a optimizar as características de radiação das antenas a serem utilizadas no agrupamento, assim como o dimensionamento das linhas de transmissão impressas, foi necessário encontrar um simulador adequado. Dentro dos simuladores existentes para a área em questão, analisou-se o MSTRIP, o Sonnet e o FEKO, uma vez que têm a característica de fornecerem uma versão gratuita. O desempenho destes foi avaliado através da construção de antenas impressas para a frequência dos 2,42 GHz. A medição dos parâmetros que caracterizam as antenas e os combinadores/divisores de potência foi efectuada utilizando-se um analisador vectorial de redes, sendo necessário para tal a ligação dos mesmos ao equipamento através de cabos coaxiais. Para isso, foi necessário garantir que estes fossem múltiplos de meio comprimento de onda para a frequência de operação desejada, de modo a que os valores medidos pelo equipamento fossem os mesmos que os encontrados na outra extremidade do cabo. Para a construção de combinadores/divisores de potência com elevada eficiência foi preciso efectuar uma análise aprofundada das linhas de transmissão impressas, nomeadamente nas descontinuidades mais utilizadas neste tipo de circuitos, como a junção – T, o degrau e a linha de transmissão com canto. Devido aos vários cálculos e considerações que devem ser tidos em conta nas linhas com descontinuidades, no âmbito deste projecto desenvolveram-se duas aplicações em Matlab, uma que permite o dimensionamento das linhas para uma determinada impedância característica e a segunda que apresenta as dimensões que estas devem ter na existência de uma descontinuidade. Ainda foi necessário analisar qual o melhor substrato a ser utilizado, FR4 ou Duroid, na construção dos combinadores. De entre os vários combinadores construídos escolheu-se o que apresenta um melhor desempenho na frequência de interesse. Este foi, ainda, comparado com um modelo comercial. Os agrupamentos foram construídos com o combinador escolhido, tendo-se implementado um agrupamento rectangular e um agrupamento circular concêntrico. As ligações entre as antenas e os combinadores foram realizadas com cabos coaxiais. A medição das principais características de radiação dos agrupamentos foi realizada de modo a avaliar o desempenho de cada um deles e consequentemente foram comparadas com duas antenas parabólicas e um agrupamento de antenas impressas implementadas em Duroid, no qual foram verificadas as vantagens da utilização dos agrupamentos planares construídos.<br>This work aimed to study and develop a planar array that allows the control of the radiation pattern. For this purpose, two antenna arrays were built with different configurations, containing 64 antennas SP (Shorted-Patch) for 2.42 GHz. Different implementation techniques were analyzed. The array feeding network was performed by using a set of nine power combiners of 8:1 ports, where the interconnection of these to the antennas was performed using coaxial cable. In order to predict and optimize the radiation characteristics of the antennas to be used in the array, as well as the design of the microstrip transmission lines, it was necessary to find an appropriate simulator. Within the existing simulators in the area of interest, the MSTRIP, the Sonnet and the FEKO were analyzed, since they provide a free version. Their performance was evaluated through the construction of microstrip antennas for the frequency of 2.42 GHz. The measurements of the parameters of the antennas and power combiners were performed by the use of a vector network analyzer, with the connections to the device made through coaxial cables. For a correct measurement, it was necessary to ensure that the cables have multiples of half wavelengths for the desired operating frequency, so that the values measured by the equipment were the same as those found at the other end the cable. For the construction of power combiners with high efficiency it was necessary to make an in-depth analysis of the transmission lines, including the discontinuities most commonly used in these circuits, such as the T-junction, the step and the mitered bend. In order to perform the necessary calculations and considerations, which must be taken into account in transmission lines with the discontinuities, two applications in Matlab were developed. The first one allows the planning of the transmission lines for a given characteristic impedance. The second one shows the dimensions that the transmission lines should have when a discontinuity exists. It was also necessary to examine the best substrate to be used for the power combiner construction. Among the implemented power combiners, the one with the best performance in the frequency of interest was chosen. This one was compared with a commercial model. The arrays, rectangular and concentric ring, were fed using the chosen power combiner. The connections between the antennas and the power combiners were made using coaxial cables. The measurement of the main radiation characteristics of the array were carried out to evaluate the performance of each array. After that, these were compared with a parabolic antenna and a microstrip antenna implemented on Duroid substrate in order to demonstrate the advantages of the planar arrays.
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Chen, Jiun-Kai, and 陳君凱. "Design of shorted twin stepped-patch MIMO antenna." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/29pzze.

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碩士<br>國立虎尾科技大學<br>航空與電子科技研究所<br>98<br>The research of this thesis is divided into two parts. In the first part, we presented a monopole antenna for WLAN application designed by micro-strip line. In the second part, we designed MIMO antennas by using the antenna presented in the first part and various types of diversity such as spatial diversity, polarization diversity, and pattern diversity. under the overall dimension of 32 x 25 mm2, the presented micro-strip antenna adopt the design of shorted-pin connected upper and lower patch in FR4 substrate and protruded the ground plane, excited resonance at 2.61 GHz and 5.52 GHz and dual impedance bandwidth of 710 MHz and 1.56 GHz, respectively. The antenna has average antenna gain of 2.9 dBi and 3.5 dBi, and has similar monopole radiation pattern. The above characteristics made the presented antenna be sufficient applied for WLAN. We also discuss and compare whether shorted pin and protruded ground plane will have some effects of the return loss to the frequency plot. Moreover, we analyze parameters of antenna structure in higher and lower frequency band so as to understand the excited principle, theory and the result of experiment can match to each other exactly. The spatial diversity antenna makes use of the two same micro-strip antennas and arranges them in parallel in the same plane, it can have good effect of isolation in the appropriate distance. The polarization diversity antenna also uses the same structure of micro-strip antenna, it takes advantage of the linear polarization characteristic of monopole antenna by lodge the two micro-strip antenna, and thus it makes the axis direction be orthogonal so as to reach the result of polarization diversity. The Pattern diversity antenna is designed with four antennas towards four directions, with this design, the fed-line offered signal to the directions we needs by the way of swap and coaxial-fed type to reach a result of all domain cover, this is the way we called switched-diversity. To sum up, the conclusion concludes the research result on antenna.
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Kuan, Hua-Ling, and 關華凌. "Two-Directional Scanning by Using Short Leaky-Wave Antenna Integrated with Aperture Coupled Patch Antenna Phase Array." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/50997717880444311222.

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碩士<br>國立交通大學<br>電信工程系<br>89<br>First, we present a two-directional scanning method by using a short leaky-wave antenna (LWA) integrated with aperture coupled patch antenna array on the bottom of the substrate. The aperture coupled patch antenna array is connected to the open end of the leaky-wave antenna. Such design offers another radiation path of the reflected wave and thus suppresses the power of reflected wave. The beam of the patch antenna array on the bottom plane can be steered by tuning individual phase-shifter connected to the patch antenna. The beam of the LWA is dominated by the frequency of input signal. Therefore, the two beams of individual direction can be steered independently. Experimental result shows that the suppression of the reflected wave can be 10 dB at 10.5 GHz with a short LWA length of 6cm (2 wavelengths). The results of return loss reveal that the bandwidth of the short LWA is extended by the proposed structure. Secondly, we propose another two-directional scanning topology that is realized by using a short leaky-wave antenna integrated with aperture coupled LWA on the bottom of the substrate. The topology then can accomplish multi-beam scanning and can also suppress the reflected power. The two-directional scanning of two different radiation patterns on different planes provides more flexibility in beam scanning and has great potential in many applications.
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Book chapters on the topic "Shorted patch antennas"

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Klemm, M., and G. Tröster. "Small Patch Antennas for UWB Wireless Body Area Network." In Ultra-Wideband, Short-Pulse Electromagnetics 7. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-37731-5_46.

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Ababil, M. H., M. F. Saimoom, S. M. H. Chowdhury, M. R. C. Mahdy, and M. A. Matin. "Highly Directive Epsilon Negative Metamaterial-Loaded Circular Patch Antenna for Triple-Band Performance." In Ultra-Wideband, Short-Pulse Electromagnetics 10. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-9500-0_20.

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Singh, Mandeep, Simranjit Singh, and Mohammad Tariqul Islam. "Highly Efficient Ultra-Wide Band MIMO Patch Antenna Array for Short Range THz Applications." In Emerging Trends in Terahertz Engineering and System Technologies. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9766-4_10.

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Joshi, Kanika, Vivekanand Tiwari, and Dheeraj Bhardwaj. "Design and Simulation of Nature-Inspired Patch Antenna with CPW Feed for Dedicated Short-Range Communication Technology Using HFSS EM Simulation Software." In Engineering Vibration, Communication and Information Processing. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1642-5_41.

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Haraz, Osama, Sultan Almorqi, Abdel-Razik Sebak, and Saleh A. Alshebeili. "High-Gain Broadband Antennas for 60-GHz Short-Range Wireless Communications." In Wideband, Multiband, and Smart Reconfigurable Antennas for Modern Wireless Communications. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-8645-8.ch003.

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This chapter introduces design and implementation of high-gain broadband antennas for 60-GHz short-range communications. It presents different antenna configurations and architectures that can be good candidates for the 60-GHz industrial, scientific and medical (ISM) band. Printed dipole array (PDA) antennas and especially the Printed log-periodic dipole array (PLPDA) antennas will be discussed in this chapter. Loading these kind of antennas with low-cost spherical or hemispherical dielectric lenses will also be presented and demonstrated to increase the gain of the antenna. Another type of antennas called electromagnetically coupled (EMC) elliptical patch antenna arrays will be investigated. Antipodal Vivaldi antenna and corrugated antipodal Vivaldi antenna are also introduced as good candidates for 60-GHz short-range communication applications.
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Kheireddine, Mekkaoui, and Rahmoune Abdellatif. "Optimal Hop Lengths to Ensure Minimum Energy Consumption in Wireless Sensor Networks." In Sensor Technology. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2454-1.ch005.

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In wireless sensor networks, nodes have a low computing capacity, a small antenna and a very limited energy source; thereby batteries are considered as a critical resource and should be used efficiently. On the other hand, the antennas are the biggest consumers of energy, therefore, and their use must be very efficient to minimize energy consumption. In a dense WSN, each node may route messages to destination nodes either through short-hops or long-hops, by using a short or a long radio range. Thus, the hop length optimization can save energy. In this article, the authors propose a theorem to optimize the hop lengths and a routing algorithm to improve the WSN power consumption. The theorem establishes a simple condition to ensure the optimal hop lengths which guarantees the minimum energy consumption. And the proposed algorithm based on that condition is used to find the optimal routing path. The simulation results are obtained by applying the condition and the algorithm on WSNs and reveals a high performance regarding WSNs energy consumption and network lifetime.
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Conference papers on the topic "Shorted patch antennas"

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Moernaut, G. J. K., and G. A. E. Vandenbosch. "The shorted annular patch as a multi-path suppressing antenna." In 2nd European Conference on Antennas and Propagation (EuCAP 2007). Institution of Engineering and Technology, 2007. http://dx.doi.org/10.1049/ic.2007.0906.

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Lau, K. L., K. M. Luk, and K. C. Kong. "Wideband folded l-slot shorted patch antenna." In 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4396925.

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Li, Huiyun, Zijian Shao, Yueping Zhang, and Junfa Mao. "A Study on Microstrip-fed Shorted Patch Antennas." In 2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP). IEEE, 2020. http://dx.doi.org/10.1109/apcap50217.2020.9246033.

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Goto, Jun, Satoshi Yamaguchi, Kazunari Kihira, Toru Takahashi, and Hiroaki Miyashita. "Dual frequency patch antenna using partially shorted annular ring patch antenna." In 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2014. http://dx.doi.org/10.1109/aps.2014.6905261.

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Lau, K. L., K. C. Kong, and K. M. Luk. "A dual-band folded shorted patch antenna." In 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2008. http://dx.doi.org/10.1109/aps.2008.4620071.

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Dutta, Debi, and Debatosh Guha. "Composite Shorted Patch Designed for Improved Radiation Patterns." In 2019 IEEE Indian Conference on Antennas and Propogation (InCAP). IEEE, 2019. http://dx.doi.org/10.1109/incap47789.2019.9134572.

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Ng, Kung Bo, Hang Wong, Chi Hou Chan, and Kwai Man Luk. "A novel waveguide fed array antenna with shorted microstrip patch elements." In 2012 IEEE International Workshop on Antenna Technology "Small Antennas and Unconventional Applications" (iWAT). IEEE, 2012. http://dx.doi.org/10.1109/iwat.2012.6178684.

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Wong, Hang, and Kwai-Man Luk. "Wideband antenna with a folded dipole and a folded shorted patch." In 2007 3rd International Workshop on Antenna Technology: Small and Smart Antennas MetaMaterials and Applications. IEEE, 2007. http://dx.doi.org/10.1109/iwat.2007.370112.

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Wong, S. H., K. L. Lau, and K. M. Luk. "A wideband folded shorted patch antenna with double L-slots." In 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4395637.

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Toru Ozone, Hiroyuki Arai, and Tsutomu Mitsui. "3-Beam Switched by quarter-wave shorted patch array antenna." In 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4396085.

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