Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2007-10-29
2011-12-27
Trinh, Sonny (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
C455S189100, C455S190100
Reexamination Certificate
active
08086209
ABSTRACT:
A mixer such as an I/Q mixer, having an amplifier having first and second inputs and an output. The first input corresponding to, for example, an I input, and the second input corresponding to, for example, a Q input. The mixer also including a multiple way (M-way) switch having a single input in communication with the output of the amplifier; a frequency control input; and at least four outputs. The frequency control input is configured to receive a periodic signal, and the M-way switch is configured to switch a signal received on the single input to each of the at least four outputs at a switching frequency that is determined by the periodic signal. The M-way switch is operable to switch the input signal received on the single input to each of the at least four outputs in a serial fashion.
REFERENCES:
patent: 6674998 (2004-01-01), Prentice
patent: 7099297 (2006-08-01), Hughes et al.
patent: 7221723 (2007-05-01), Walker
patent: 7409012 (2008-08-01), Martin et al.
patent: 7593496 (2009-09-01), Fan et al.
patent: 2008/0084922 (2008-04-01), Kleveland et al.
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Trinh Sonny
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