Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Patent
1996-12-16
1999-03-23
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
327359, 455296, 455333, H04B 128
Patent
active
058865470
ABSTRACT:
An integrated receiver circuit (10) has a first amplifier (12) coupled for receiving a radio frequency (RFIN) input signal. A mixer (16) has an RF input coupled to an output of the first amplifier, a local oscillator (LO) input coupled for receiving an LO signal, and an output for providing an intermediate frequency (IF) signal. A second amplifier (20) has an input coupled for receiving the IF signal, and an output for providing a receive signal strength indicator (RSSI) signal representative of an input power level of the receiver signal path. A feedback circuit (22-26 or 72, 78) is coupled between the first output of the second amplifier and a linearity control input of the mixer for controlling linearity of the mixer.
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Durec Jeffrey C.
Main William E.
Atkins Robert D.
Englund Terry L.
Motorola Inc.
Wells Kenneth B.
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