Digital baseband to IF conversion in cellular base stations

Details Digital baseband to IF conversion in cellular base stations Digital baseband to IF conversion in cellular base stations

1994-05-02

1996-05-21

Chin, Stephen

Pulse or digital communications

Transmitters

375298, 375302, 375377, 370120, 370122, 370 72, 348388, 332103, 455103, 455118, H04L 2704

Patent

active

055197329

ABSTRACT:
A system and method for converting and combining multiple digital baseband signals into a composite IF signal for subsequent up converting and transmitting as an RF signal. The system and method use distributed symmetrical circuit architecture to form a composite IF signal from multiple identical converting elements which are daisy chained together to produce the composite signal from the converted signals in each element. Circuit complexity is reduced by the use of the multiple identical elements each of which may be readily formed from a standard integrated circuit.

REFERENCES:
patent: 5289464 (1994-02-01), Wang
patent: 5412352 (1995-05-01), Graham

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