Abstract: In a filter device, a transversal elastic wave filter, which defines a delay element, is connected in parallel with a band pass filter. The transversal elastic wave filter has the same amplitude characteristic as and the opposite phase to the band pass filter at a desired frequency inside an attenuation range of the band pass filter. When a wavelength determined by an electrode finger period of IDTs and is denoted by ?, the distance between the first IDT and the second IDT of the elastic wave filter is about 12? or less.

Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode on the piezoelectric substrate and including first and second busbars and first and second electrode fingers connected to the first and second busbars, a bump electrode electrically connected to the IDT electrode, a protective film covering the IDT electrode, and a heat-conductive material layer that has an insulating property and that is defined at least partially by a region excluding an excitation region of the IDT electrode and a region located above the bump electrode.

Abstract: In a filter device, a transversal elastic wave filter, which defines a delay element, is connected in parallel with a band pass filter. The transversal elastic wave filter has the same amplitude characteristic as and the opposite phase to the band pass filter at a desired frequency inside an attenuation range of the band pass filter. When a wavelength determined by an electrode finger period of IDTs and is denoted by ?, the distance between the first IDT and the second IDT of the elastic wave filter is about 12? or less.

Abstract: In a high frequency module, in addition to a main transmission path in which a high-frequency signal propagates in first filter elements, a sub transmission path is defined by inductive coupling or capacitive coupling between a first inductor and a matching element or by inductive coupling between the first inductor and a second inductor. The sub transmission path has different amplitude characteristics and phase characteristics from those of the main transmission path depending on a degree of the inductive coupling or capacitive coupling, and transmission characteristics as a high-frequency module are adjustable by adjusting the amplitude characteristics and the phase characteristics of the sub transmission path.

Abstract: A filter device includes a band pass filter connected between a first signal terminal and a second signal terminal and an LC circuit connected in parallel with the band pass filter. The LC circuit has anti-resonant characteristics that make the LC circuit be open at a pass band of the band pass filter, and make attenuation in a specified frequency band outside of the pass band of the band pass filter higher than in a case in which the LC circuit is not connected, as a result of the LC circuit being connected.

Abstract: A filter device includes a first signal terminal, a second signal terminal, a filter unit, a first inductor and a second inductor. The filter unit is connected between the first signal terminal and the second signal terminal. The first inductor is connected between a connection point between the filter unit and the first signal terminal, and a ground potential. The second inductor is connected between the filter unit and the second signal terminal. The second inductor is electromagnetically coupled with the first inductor.

Abstract: A ladder filter device includes elastic wave resonators with IDT electrodes. An apodization angle ? in an IDT electrode of a series arm resonator in the ladder filter device falls within a range from about 2° to about 14° with respect to an elastic wave propagation direction. This arrangement provides a ladder filter device that has a smaller insertion loss in a low frequency side portion of a passing band.

Abstract: In a filter device, a transversal elastic wave filter, which defines a delay element, is connected in parallel with a band pass filter. The transversal elastic wave filter has the same amplitude characteristic as and the opposite phase to the band pass filter at a desired frequency inside an attenuation range of the band pass filter. When a wavelength determined by an electrode finger period of IDTs and is denoted by ?, the distance between the first IDT and the second IDT of the elastic wave filter is about 12? or less.

Abstract: A filter device includes a first signal terminal, a second signal terminal, a filter unit, a first inductor and a second inductor. The filter unit is connected between the first signal terminal and the second signal terminal. The first inductor is connected between a connection point between the filter unit and the first signal terminal, and a ground potential. The second inductor is connected between the filter unit and the second signal terminal. The second inductor is electromagnetically coupled with the first inductor.

Abstract: A filter device includes a band pass filter connected between a first signal terminal and a second signal terminal and an LC circuit connected in parallel with the band pass filter. The LC circuit has anti-resonant characteristics that make the LC circuit be open at a pass band of the band pass filter, and make attenuation in a specified frequency band outside of the pass band of the band pass filter higher than in a case in which the LC circuit is not connected, as a result of the LC circuit being connected.

Abstract: A ladder filter device includes elastic wave resonators with IDT electrodes. An apodization angle ? in an IDT electrode of a series arm resonator in the ladder filter device falls within a range from about 2° to about 14° with respect to an elastic wave propagation direction. This arrangement provides a ladder filter device that has a smaller insertion loss in a low frequency side portion of a passing band.

Abstract: An apparatus for topping a succession of regularly spaced pizzapie crusts on a conveyer with sliced topping material, such as cheese, comprising slicing means to cut blocks of the material on the conveyor into slices of appropriate shapes and sizes, and an automatic weighing means to supply appropriate amounts of the sliced material to the pizzapie crusts. The apparatus further includes an electrical control means which controls the operations of the above-mentioned means so that the operations will have a timed relationship with the movement of the pizzapie crusts, thereby placing each amount of sliced material on top of the corresponding pie crust with accuracy and without loss.