DUAL-BAND ANTENNA FOR MOBILE COMMUNICATIONS

mobile communication facilities. SUBSTANCE: antenna has rod-type radiating element incorporating first part of definite length connected to coaxial transmission line and second part of definite length emerging from first part. Coaxial transmission line is connected to ground plate and first capaciti...

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Bibliographische Detailangaben
Hauptverfasser:	KHA DONG IN, KRYLOV KONSTANTIN, SEO KHO SOO, GUDELEV ALEKSANDR
Format:	Patent
Sprache:	eng
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	mobile communication facilities. SUBSTANCE: antenna has rod-type radiating element incorporating first part of definite length connected to coaxial transmission line and second part of definite length emerging from first part. Coaxial transmission line is connected to ground plate and first capacitive load, to first part of radiating element. Second part of radiating element placed inside choke coil is provided with shorted lead connected to remote end of second part and open lead on its near end. Second capacitive load is connected to shorted lead of choke coil. Input impedance of choke coil is higher at higher operating frequency band of dual-band antenna so that only first (lower) part of radiating element is emitting waves. Input impedance in lower operating frequency band is lower which ensures radiation throughout entire length of antenna. EFFECT: simplified design, enlarged frequency band. 21 cl, 3 dwg