Filter circuit permitting adjustment of cutoff frequency

Filter device and dual-band radio system in which the filter dev

Filter for broadcast receiver tuner

Filter having a variable response time for filtering an input si

Filter scheme for receiver

Filter switching arrangement for a tuner

Filter switching circuit

Filter switching system and method

Filter-integrated even-harmonic mixer and hi-frequency radio...

Filtering of a receive frequency band

Fine tuning frequency synthesizer with feedback loop for frequen

Fine-stage automatic frequency compensation in...

Five-port topology for direct down-conversion

Fixed point FIR filter with adaptive truncation and clipping...

Fixed termination scheme for differential receiver that...

Flexible ferrite gasket for receiver second image protection

Floating fet mixer

Floating sound system

Flow based layer 2 handover mechanism for mobile node with...

FM audio signal receiver having a characteristic control functio