Patent ID: 7848726

Claim:
A high-frequency receiver for use in a location where an identical set of broadcast channels can be received with different broadcast waves which are broadcast or relayed in frequency bands different from one another, comprising: a separating unit that separates received broadcast channel signals into I signals and Q signals; a pair of variable LPFs which only pass frequency components of the I signals and Q signals which components are within respective bandwidths thereof, each variable LPF being configured to be capable of changing the bandwidth thereof in response to a control signal given externally; a demodulation unit, provided for each of said different broadcast waves, for demodulating the I and Q signals derived from the broadcast wave into a demodulated signal; a selector for selecting one of the demodulated signals which has a better reception quality; a reception-level detector that detects a reception level of each of the received broadcast waves; a noise-evaluation-information detector that detects noise evaluation information of each of the received broadcast waves; and a control unit, operative based on the reception level and the noise evaluation information for a selected demodulated signal selected by the selector, for supplying the pair of variable LPFs with said control signal which controls the bandwidths of the variable LPFs so as to optimize the reception level and the noise evaluation information for the selected demodulated signal.