Telecommunications – Receiver or analog modulated signal frequency converter – Frequency conversion between signal source and receiver
Patent
1997-07-01
2000-02-22
Chin, Wellington
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency conversion between signal source and receiver
455323, 455311, 455339, 4551501, 4551801, 4551881, 4551891, 4551901, 455255, H04Q 732
Patent
active
060290528
ABSTRACT:
A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.
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"Design of an Integrated Front-End for a Direct Conversion Receiver," Martin Isberg, Depart of Applied Electronics, Lund Institute of Technology, 1994, p. 62.
Carlsson Torsten
Celander Jan
Gustafsson Kjell
Isberg Martin
Jakobsson Peter
Chin Wellington
Ferguson Keith
Telefonaktiebolaget LM Ericsson
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