Wave transmission lines and networks – Coupling networks – Balanced to unbalanced circuits
Patent
1998-09-15
2000-07-25
Gensler, Paul
Wave transmission lines and networks
Coupling networks
Balanced to unbalanced circuits
327257, 330301, H03H 1132
Patent
active
060941081
ABSTRACT:
An unbalance-to-balance converter includes an FET and a balanced output adjusting capacitor connected between the source terminal of the FET and an earth conductor. The balanced output adjusting capacitor has a capacitance value equal to a capacitance difference Cpd-Cps between a drain side parasitic capacitance Cpd and a source side parasitic capacitance Cps. This makes it possible to solve a problem involved in a conventional unbalance-to-balance converter in that when the drain side parasitic capacitance Cpd differs from the source side parasitic capacitance Cps, a pair of balanced signals output from the drain terminal and source terminal do not have the same amplitude and are not in complete opposition.
REFERENCES:
patent: 5039891 (1991-08-01), Wen et al.
patent: 5821815 (1998-10-01), Mohwinkel
Iyama Yoshitada
Kitabayashi Fumimasa
Ono Masayoshi
Suematsu Noriharu
Sugiyama Shigeru
Gensler Paul
Mitsubishi Denki & Kabushiki Kaisha
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