Varactor‐loaded compact folded dipole antenna for digital terrestrial radio reception | Zendy

Nakai Makoto | Zendy; Iizuka Hideo | Zendy; Sugiura Shinya | Zendy; Sato Kazuo | Zendy

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Varactor‐loaded compact folded dipole antenna for digital terrestrial radio reception

Author(s) -

Nakai Makoto,

Iizuka Hideo,

Sugiura Shinya,

Sato Kazuo

Publication year - 2010

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.25228

Subject(s) - standing wave ratio , electrical engineering , dipole antenna , antenna (radio) , monopole antenna , coaxial antenna , varicap , antenna measurement , loop antenna , physics , optoelectronics , antenna factor , microwave , engineering , materials science , microstrip antenna , telecommunications , capacitance , electrode , quantum mechanics

A varactor‐loaded folded dipole antenna is proposed for digital terrestrial radio reception. The antenna consists of a folded dipole with two pairs of varactors and controls resonant frequency without additional DC bias circuit. It has a compact structure with its arms bent. A prototype antenna with dimensions of 332 mm by 30 mm was printed on a polyethylene terephthalate film. The antenna in free space exhibited a frequency tuning range from 187 to 230 MHz, with a voltage standing wave ratio (VSWR) of less than 1.4 and gain from −1.4 to −3.1 dBi. The antenna put on glass maintained a VSWR of less than 1.3 from 188 to 192 MHz for digital terrestrial radio band. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1463–1466, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25228

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