Methods and apparatus for implementing a receiver on a monolithic integrated circuit
OwnerKimitake Utsunomiya, Takatsugu Kamatainventors
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Abstract
A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.
Claims17
A monolithic integrated circuit comprising:
- a tuner for receiving radio frequency (RF) television signals and down converting the RF television signals to intermediate frequency (IF) television signals, the tuner comprising:
- at least one tunable filter comprising a plurality of discrete selectable capacitive, inductive, or resistive elements configured for a particular frequency response, wherein the at least one tunable filter does not require a power supply voltage;
- and
- an IF processor, coupled to the tuner, for down converting the IF television signals to baseband television signals.
Dependencies are inferred from the claim text.