Results 271 to 280 of about 750,689 (337)
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IETE Journal of Research, 1970
Archimedean spiral is a broad band antenna. It belongs to the general class of antennas known as “Frequency independent antenna”.
K. K. Srivastava, I. Sreenivasiah
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Archimedean spiral is a broad band antenna. It belongs to the general class of antennas known as “Frequency independent antenna”.
K. K. Srivastava, I. Sreenivasiah
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IEEE Transactions on Antennas and Propagation, 2020
A low-profile spiral antenna backed by a circular high-impedance surface (HIS) reflector composed of homogeneous (CirHISRhomo) fan-shaped patch elements is investigated. The total antenna height from the bottom of the CirHISRhomo to the spiral antenna is
M. Tanabe, H. Nakano
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A low-profile spiral antenna backed by a circular high-impedance surface (HIS) reflector composed of homogeneous (CirHISRhomo) fan-shaped patch elements is investigated. The total antenna height from the bottom of the CirHISRhomo to the spiral antenna is
M. Tanabe, H. Nakano
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Impedance Matching of an Archimedean Spiral Antenna
2020 IEEE International Conference on Electro Information Technology (EIT), 2020This paper describes the design and impedance matching of an Archimedean spiral antenna using multi-section quarter wave transformers as well as exponential tapered line transformers. Each design starts with a paired strips transmission line configuration and gradually changes to a microstrip layout while also transforming the impedance value.
Erin E. Cvetnic, Ryan S. Adams
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Multiarms Multiports Externally Fed Spiral Antenna
IEEE Antennas and Wireless Propagation Letters, 2012 International audienceThis letter deals with an externally fed spiral antenna. This design is a slot antenna that exhibits a behavior similar to that of the center-fed Archimedean spiral antenna with an improvement in terms of polarization.
Regis Guinvarc'H
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European Transactions on Telecommunications, 1990
AbstractThe Archimedean printed spiral antenna is investigated by numerical methods, usjng the Green's function for stratified media.The integral equation for the current distribution is obtained by imposing the condition of vanishing total electric field tangential to the conducting strip and solved by application of the method of moments.Knowledge of
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AbstractThe Archimedean printed spiral antenna is investigated by numerical methods, usjng the Green's function for stratified media.The integral equation for the current distribution is obtained by imposing the condition of vanishing total electric field tangential to the conducting strip and solved by application of the method of moments.Knowledge of
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2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, 2007
This paper deals with a microstrip antenna that has a spiral geometry rectangular form. This antenna form is based on the analysis of a spiral monopole. Through such configuration, it is possible to obtain a wider bandwidth operation. In addition, a considerable bandwidth in this type of microstrip is verified.
Dinisio Raony Ribeiro +4 more
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This paper deals with a microstrip antenna that has a spiral geometry rectangular form. This antenna form is based on the analysis of a spiral monopole. Through such configuration, it is possible to obtain a wider bandwidth operation. In addition, a considerable bandwidth in this type of microstrip is verified.
Dinisio Raony Ribeiro +4 more
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IEEE Antennas and Wireless Propagation Letters, 2011
Conventional spiral antennas radiate either a left-handed circularly polarized (CP) wave or a right-handed CP wave in a specific direction (single CP radiation). This letter presents a novel spiral antenna, designated as the metamaterial spiral, which radiates a dual CP wave.
H. Nakano +3 more
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Conventional spiral antennas radiate either a left-handed circularly polarized (CP) wave or a right-handed CP wave in a specific direction (single CP radiation). This letter presents a novel spiral antenna, designated as the metamaterial spiral, which radiates a dual CP wave.
H. Nakano +3 more
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IEEE Transactions on Instrumentation and Measurement
In this article, a compact multiservice antenna (MSA) is presented for sensing and communication using a reconfigurable complementary spiral resonator.
A. Raza +3 more
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In this article, a compact multiservice antenna (MSA) is presented for sensing and communication using a reconfigurable complementary spiral resonator.
A. Raza +3 more
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IEEE Transactions on Antennas and Propagation, 2020
In this article, a miniaturized dual-resonant antenna system at MHz-band operating at around 20 and 50 MHz is proposed for frequency-shift keying impulse radio (FSK-IR) intrabody communications.
Jingjing Shi +6 more
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In this article, a miniaturized dual-resonant antenna system at MHz-band operating at around 20 and 50 MHz is proposed for frequency-shift keying impulse radio (FSK-IR) intrabody communications.
Jingjing Shi +6 more
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A spiral antenna on a cylinder
IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002This paper presents a spiral antenna which is located on a conducting cylinder (SPC). The antenna surface is parallel to the cylindrical surface. The authors examine the radiation characteristics of the SPC. The conducting cylinder is approximated using wire grids, and an electric field integral equation is solved with the method of moments.
K. Nakayama, H. Nakano
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