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EP0866513A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Phasing and balancing member

Assignee: Nokia Oyj
•
Filing: 1998-03-19
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Granted: —
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Expires: 2018-03-19
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Abstract

Abstract The invention relates to processing of radio frequency signals, particularly to the balancing of signals. The phasing and balancing member according to the invention is based on the use of four parallel strip lines (10, 20, 30, 40). The strip lines are combined as two pairs (10, 40; 20, 30), which are located within each other. In the line pair (20, 30) connected the unbalanced signal the other ends (22, 32) are interconnected, and in the line pair (10, 40) connected to the balanced signal the other ends (12, 42) are connected to a point corresponding to the signal's zero potential. In the different lines of each pair the signal travels in opposite directions, whereby the radiation fields generated by the signals travelling in the different lines substantially cancel each other. Preferably capacitive members (50, 60) are further connected to those ends (14, 44; 24, 34) of the strip line pairs which are connected to the signals, whereby each strip line pair in combination with the capacitive member connected to it forms a resonance circuit.

Inventors

  • 👤 Risto Väisänen

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 15:27
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01P5/10

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 128 words
A phasing and balancing member realised with strip lines and comprising a symmetric interface (SYM) and an asymmetric interface (ASYM), whereby the electromagnetic coupling between the interfaces is formed substantially with the aid of the electromagnetic coupling between the strip lines of said member, characterised in that it comprises four substantially parallel strip lines (10, 20, 30, 40), whereby said four strip lines (10, 20, 30, 40) form a first strip line pair (20, 30) and a second strip line pair (10, 40), and whereby the first ends (22, 32) of said first strip line pair (20, 30) are interconnected, and that at least one of said strip line pairs (20, 30; 10, 40) forms a part of a resonance circuit, which has a certain predetermined resonance frequency.
Claim 2
Dependent Claim 44 words
A phasing and balancing member according to claim 1, characterised in that it further comprises a first capacitive member (50) connected to said first strip line pair (20, 30), whereby said first capacitive member and said first strip line pair form said resonance circuit.
Claim 3
Dependent Claim 50 words
A phasing and balancing member according to claim 1, characterised in that it further comprises a second capacitive member (60) connected to said second strip line pair (10, 40), whereby said second capacitive member and said second strip line pair form a resonance circuit resonating at a certain predetermined frequency.
Claim 4
Dependent Claim 31 words
A phasing and balancing member according to claim 1, characterised in that the first ends (12, 42) of the strip lines (10, 40) of said second strip line pair are interconnected.
Claim 5
Dependent Claim 35 words
A phasing and balancing member according to claim 1, characterised in that the first ends (12, 42) of the strip lines (10, 40) of said second strip line pair are connected to the ground potential.
Claim 6
Dependent Claim 38 words
A phasing and balancing member according to claim 1, characterised in that the first ends (12, 42) of the strip lines (10, 40) of said second strip line pair are connected through a capacitance to the ground potential.
Claim 7
Dependent Claim 64 words
A phasing and balancing member according to claim 1, characterised in that it further comprises two strip lines (70, 80) which are located in parallel with the group formed by said four strip lines (10, 20, 30, 40), one on each side of said group, and both said two strip lines (70, 80) are connected to the ground potential at least at one point.
Claim 8
Dependent Claim 141 words
A mobile communication means having a phasing and balancing member realised with strip lines and comprising a symmetric interface (SYM) and an asymmetric interface (ASYM), whereby the electromagnetic coupling between the interfaces is formed substantially with the aid of the electromagnetic coupling between the strip lines of said member, characterised in that the phasing and balancing member comprises four substantially parallel strip lines (10, 20, 30, 40), whereby said four strip lines (10, 20, 30, 40) form a first strip line pair (20, 30) and a second strip line pair (10, 40), whereby the first ends (22, 32) of said first strip line pair (20, 30) are interconnected, and in which phasing and balancing member at least one of said strip line pairs (20, 30; 10, 40) forms a part of a resonance circuit, which has a certain predetermined resonance frequency.

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