Telecommunications – Transmitter – Frequency conversion
Patent
1979-07-11
1982-04-27
Ng, Jin F.
Telecommunications
Transmitter
Frequency conversion
455319, 455321, 455323, 455333, H04B 104, H04B 128
Patent
active
043274455
ABSTRACT:
A frequency converter comprises a frequency converting circuit, and filters which are input and output functional with respect to the frequency converting circuit for passing input and output frequency waves respectively and which have different passing frequency bands. A single terminal is provided for the frequency converter, through which reception of the input frequency wave to the input functional filter and delivery of the output frequency wave from the output functional filter are effected.
REFERENCES:
patent: 2978579 (1961-04-01), Sosin
patent: 3624506 (1971-11-01), Townsend
patent: 3890573 (1975-06-01), Strenglein
patent: 4112373 (1978-09-01), Miyamoto et al.
Hitachi Denshi Kabushiki Kaisha
Ng Jin F.
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