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US 8,011,972 B2Granted
Connector with crosstalk compensation
AssigneePanduit Corp.
InventorsJack E. Caveney, Masud Bolouri-Saransar
Life of this patent
Estimating the term…
Abstract
A jack with a flexible printed circuit board (FPC) is provided. The FPC is connected to the plug interface contacts and has a compensation circuit to compensate for near-end crosstalk (NEXT) and far-end crosstalk (FEXT). Capacitive and inductive compensation in the compensation circuit are of opposite polarity and are substantially equal in magnitude. The compensation circuit has a FEXT compensation zone containing compensation for the FEXT. Inductive and capacitive compensation in the FEXT compensation zone are distributed.
Claims17
A jack comprising:
- plug interface contacts configured to connect with plug contacts of a plug inserted into the jack;
- and
- a flexible printed circuit (FPC) mechanically and electrically connected to the plug interface contacts, the FPC having a compensation circuit configured to compensate for near-end crosstalk (NEXT) and far-end crosstalk (FEXT), the compensation circuit having inductive and capacitive compensation configured such that the capacitive and inductive compensation are of opposite polarity and substantially equal in magnitude, the compensation circuit having a FEXT compensation zone containing compensation for the FEXT, inductive and capacitive compensation in the FEXT compensation zone being distributed, wherein the FEXT compensation zone comprises first, second, third, and fourth traces, the first and second traces being associated with a first differential circuit pair of the jack and the third and fourth circuit traces being associated with a second differential circuit pair of the jack wherein a portion of the second trace overlies a portion of the fourth trace and a portion of the first trace overlies a portion of the third trace;
- wherein the compensation circuit further comprises:
- an impedance compensation zone configured to ensure that a combined impedance of the communication jack and plug matches an impedance of other network elements, the impedance compensation zone disposed above the plug interface contact compensation zone;
- first and second transition zones, the first transition zone adjacent to a connection to the plug interface contacts;
- a NEXT compensation zone between the first and second transition zones;
- a neutral zone;
- a NEXT crosstalk zone between the second transition zone and the neutral zone;
- a plug interface contact compensation zone configured to compensate for the plug interface contacts, the plug interface contact zone being electrically connected to the compensation circuit at a juncture between the first transition zone and the NEXT compensation zone;
- and wherein the FPC comprises:
- a folding pivot, the folding pivot located at the juncture between the first transition zone and the NEXT compensation zone;
- and
- a fold-over portion foldable wound the folding pivot, the plug interface contact compensation zone being located on the fold-over portion.
11 more elements
A jack comprising:
- plug interface contacts configured to connect with plug contacts of a plug inserted into the jack;
- and
- a flexible printed circuit (FPC) mechanically and electrically connected to the plug interface contacts, the FPC having a compensation circuit configured to compensate for near-end crosstalk (NEXT) and far-end crosstalk (FEXT), the compensation circuit having a FEXT compensation zone containing compensation for the FEXT, inductive and capacitive compensation in the FEXT compensation zone configured such that there is no net effect of the inductive and capacitive compensation on NEXT, wherein the FEXT compensation zone comprises first, second, third, and fourth traces, the first and second traces being associated with a first differential circuit pair of the jack and the third and fourth circuit traces being associated with a second differential circuit pair of the jack wherein a portion of the second trace overlies a portion of the fourth trace and a portion of the first trace overlies a portion of the third trace;
- wherein the compensation circuit further comprises;
- an impedance compensation zone configured to ensure that a combined impedance of the communication jack and plug matches an impedance of other network elements, the impedance compensation zone disposed above the plug interface contact compensation zone;
- first and second transition zones, the first transition zone adjacent to a connection to the plug interface contacts;
- a NEXT compensation zone between the first and second transition zones;
- a neutral zone;
- a NEXT crosstalk zone between the second transition zone and the neutral zone;
- a plug interface contact compensation zone configured to compensate for the plug interface contacts, the plug interface contact zone being electrically connected to the compensation circuit at a juncture between the first transition zone and the NEXT compensation zone;
- and wherein the FPC comprises:
- a folding pivot, the folding pivot located at the juncture between the first transition zone and the NEXT compensation zone;
- and
- a fold-over portion foldable around the folding pivot, the plug interface contact compensation zone being located on the fold-over portion.
11 more elements
A method of compensating for near-end crosstalk (NEXT) and far-end crosstalk (FEXT) in a communication apparatus, the method comprising:
- providing a flexible printed circuit (FPC) in a jack mechanically and electrically connected to plug interface contacts in the jack, the FPC having a compensation circuit configured to compensate for the NEXT and FEXT, the compensation circuit having:
- inductive and capacitive compensation of opposite polarity and that are substantially equal in magnitude, and
- a FEXT compensation zone containing compensation for the FEXT, inductive and capacitive compensation in the FEXT compensation zone being distributed, wherein the FEXT compensation zone comprises first, second, third, and fourth traces, the first and second traces being associated with a first differential circuit pair of the jack and the third and fourth circuit traces being associated with a second differential circuit pair of the jack wherein a portion of the second trace overlies a portion of the fourth trace and a portion of the first trace overlies a portion of the third trace;
- wherein the compensation circuit further comprises:
- an impedance compensation zone configured to ensure that a combined impedance of the communication jack and plug matches an impedance of other network elements, the impedance compensation zone disposed above the plug interface contact compensation zone;
- first and second transition zones, the first transition zone adjacent to a connection to the plug interface contacts;
- a NEXT compensation zone between the first and second transition zones;
- a neutral zone;
- a NEXT crosstalk zone between the second transition zone and the neutral zone;
- a plug interface contact compensation zone configured to compensate for the plug interface contacts, the plug interface contact zone being electrically connected to the compensation circuit at a juncture between the first transition zone and the NEXT compensation zone;
- and wherein the FPC comprises:
- a folding pivot, the folding pivot located at the juncture between the first transition zone and the NEXT compensation zone;
- and
- a fold-over portion foldable around the folding pivot, the plug interface contact compensation zone being located on the fold-over portion.
11 more elements
Dependencies are inferred from the claim text.