Results 161 to 170 of about 88,827 (197)
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1988
Wire and loop antennas are widely used in communication systems from low to ultra-high frequencies, either in the form of individual elements or arranged with other similar elements to form phased arrays. They are also frequently used as probes to sense unknown environments or as bases for modeling more complex systems and structures.
Lawrence W. Rispin, David C. Chang
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Wire and loop antennas are widely used in communication systems from low to ultra-high frequencies, either in the form of individual elements or arranged with other similar elements to form phased arrays. They are also frequently used as probes to sense unknown environments or as bases for modeling more complex systems and structures.
Lawrence W. Rispin, David C. Chang
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Novel Printed Monopole Coupled Loop Antenna
IEEE Antennas and Wireless Propagation Letters, 2008A novel modified planar monopole coupled loop antenna (MCLA) operating around 440 MHz is proposed. This antenna has the advantage of widening the 10 dB return loss bandwidth (15.3%) by using a mutual electromagnetic coupling effect between a short-circuited half-loop antenna and an open circuited printed arc monopole line.
Abdallah, Mohamed +3 more
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Tunable loop-loaded printed dipole antenna design
2010 IEEE Antennas and Propagation Society International Symposium, 2010Compact multi-function antennas play a major role in today's communication systems where size, weight, power consumption and cost are the main limiting factors in designing integrated transmitter/receiver circuitry. In this view, electronically reconfigurable printed antennas were previously considered to achieve multi-band applications [1–4].
ERDEMLİ, YUNUS EMRE +2 more
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1971
The circular loop antenna consists of a ring of radius b made of highly conducting metal with circular cross section of radius a ≪ b. It is driven at Φ = 0 by a delta-function generator with voltage V, as shown in Fig. 4.1. It is assumed that the loop is electrically thin so that |ka| ≪ 1, where k = β - jα, as defined in (1.6), is the complex wave ...
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The circular loop antenna consists of a ring of radius b made of highly conducting metal with circular cross section of radius a ≪ b. It is driven at Φ = 0 by a delta-function generator with voltage V, as shown in Fig. 4.1. It is assumed that the loop is electrically thin so that |ka| ≪ 1, where k = β - jα, as defined in (1.6), is the complex wave ...
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2008 IEEE Antennas and Propagation Society International Symposium, 2008
In automatic meter reading (AMR) systems, one embodiment of the prior art comprises: the PCB, the battery and the antenna are held together in a short plastic tube and encapsulated. The antenna and the unit is then put into a metal walled, metal or plastic covered pit, where the antenna part is at the level of the ground plane and slightly lift above ...
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In automatic meter reading (AMR) systems, one embodiment of the prior art comprises: the PCB, the battery and the antenna are held together in a short plastic tube and encapsulated. The antenna and the unit is then put into a metal walled, metal or plastic covered pit, where the antenna part is at the level of the ground plane and slightly lift above ...
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CORNER-DRIVEN COUPLED SQUARE LOOP ANTENNAS
Canadian Journal of Physics, 1959A theory for two identical square loop antennas driven in the zeroth-phase sequence (voltages in phase at all four corners) and the second-phase sequence (voltages in and out of phase at the corners) is formulated. Eight independent integral equations are obtained.
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1982 Antennas and Propagation Society International Symposium, 2005
J. Hopf, H. Lindenmeier
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J. Hopf, H. Lindenmeier
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2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
H. Nakano, K. Yoshida, J. Yamauchi
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H. Nakano, K. Yoshida, J. Yamauchi
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