US 2009/0289860 A1Published application

Active magnetic antenna with ferrite core

AssigneeSamsung Electronics Co., Ltd.

InventorsSang-Ha LEE, Yong-Jin Kim, Jae-Ho Lee, Seung-Hwen Kim, S. Konstantin Krylov

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Abstract

An active magnetic antenna with a ferrite core having a winding is provided, forming a frame magnetic antenna which is connected with a low-noise transistor, to amplify a signal of the frame magnetic antenna. A base of the transistor is connected directly to one contact of the winding, and a second contact of the winding is capable of shifting a voltage of the base of the transistor. The impedance of the frame magnetic antenna is adjusted as a complex conjugate with an impedance of the base of the transistor of the low-noise amplifier, and the winding eliminates its own resonances.

Claims7

Dependent claims

An active magnetic antenna comprising:

a ferrite bar containing a ferrite core;
a low-noise transistor;
and
a winding on the ferrite core forming a frame magnetic antenna,
wherein the frame magnetic antenna is connected with the low-noise transistor to amplify a signal received by the frame magnetic antenna,
wherein a base of the low-noise transistor connects directly to a first winding contact, and a second winding contact shifts a voltage on the base of the low-noise transistor, and
wherein an impedance of the frame magnetic antenna is adjusted by an integrating complex of the impedance of the frame magnetic antenna and an impedance of the base of the low-noise transistor, and the winding eliminates resonances in the frame magnetic antenna.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/433,180Filed 30 Apr 2009
Priority: RU 200811995021 May 2008
Published: 26 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H01Q 7/06
Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane…: with core…
H01Q 7/08
With core of ferromagnetic material: ferrite rod or like elongated core
H01Q 23/00
Antennas with active circuits or circuit elements integrated within them or attached
H01Q
Antennas, i.e. radio aerials

Family

US 8,054,235 B2Related patent
US 2009/0289860 A1This patent

From the US filing history. Foreign family members aren’t listed.

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