Back to results
US 6,900,705 B2Granted
Balanced high-frequency device and balance-characteristics improving method and balanced high-frequency circuit using the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHiroyuki Nakamura, Toshifumi Nakatani, Toshio Ishizaki
Life of this patent
Estimating the term…
Abstract
A balanced high-frequency device is constituted by a balanced device and a phase circuit. The input side of the balanced device is connected to an input terminal IN serving as an unbalanced input/output terminal and the output side of it is connected to output terminals OUT1 and OUT2 serving as balanced input/output terminals. Moreover, the phase circuit is connected between the output terminals.
Claims20
A balanced high-frequency device comprising:
- a balanced device having input terminals for inputting signals and output terminals for outputting signals;
- and
- a phase circuit;
- wherein:
- at least said input terminals or said output terminals are balanced input terminals or balanced output terminals;
- said phase circuit is a parallel resonant circuit which is electrically connected between said balanced input terminals or said balanced output terminals and which parallel-resonates at a predetermined frequency to a around plane to differential-mode signal components of said signals;
- and
- said phase circuit reduces common-mode signal components of said signals.
5 more elements
A phase circuit comprising:
- a phase-circuit section having an output terminal electrically parallel connected between balanced input terminals or balanced output terminals of a balanced device which has input terminals for inputting signals and output terminals for outputting signals and in which at least said input terminals or said output terminals are said balanced input terminals or said balanced output terminals to reduce common-mode signal components of said signals,
- wherein said phase-circuit section is a parallel resonant circuit which parallel-resonates at a predetermined frequency to a around plane to differential-mode signal components of said signals.
Dependencies are inferred from the claim text.