Introducing loop antennas for short-range radios
Printed-loop antennas are commonly used with unlicensed shortrange radios, due to requirements for small size, ruggedness, and low cost. The frequency range is generally 285 to 470 MHz (see Part 2 of this series), where a full-sized quarter-wave whip antenna measures 6.28 to 10.4 in. (16.0 to 26.3 c...
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Veröffentlicht in: | Microwaves & RF 2002-07, Vol.41 (7), p.80-88 |
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Hauptverfasser: | , , |
Format: | Magazinearticle |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | Printed-loop antennas are commonly used with unlicensed shortrange radios, due to requirements for small size, ruggedness, and low cost. The frequency range is generally 285 to 470 MHz (see Part 2 of this series), where a full-sized quarter-wave whip antenna measures 6.28 to 10.4 in. (16.0 to 26.3 cm) in length. The large size usually eliminates consideration of whip antennas for these applications, resulting in the acceptance of printedcircuit-board (PCB) antennas as the most popular solution. |
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ISSN: | 0745-2993 2162-1411 |