摘要:
A SAW duplexer includes a first SAW filter having a passband with a relatively low frequency, and a second SAW filter having a passband with a relatively high frequency. The first and second SAW filters each have a ladder-shaped circuit configuration. A bridging inductor is connected in parallel to at least one serial arm resonator in the second SAW filter. The bridging inductor includes a coiled portion provided on a multilayer package substrate. The coiled portion is defined by connecting first to third wires provided on first to third layers by via-hole conductors. First, third, and fifth via-hole conductors that define a coil return wire portion are disposed inside the coiled portion.
摘要:
One form of evaluation apparatus comprising a plurality of light sources vertically arranged by one side of a carrier line in width direction Y perpendicular to carrying direction X of the carrier line; and a light-receiving section arranged by an opposite side of the carrier line in the width direction Y perpendicular to the carrying direction X of the carrier line. Another form of evaluation apparatus comprising a plurality of light sources capable of irradiating measuring lights of given quantity; means for regulating the quantity of measuring lights from the light sources in accordance with sizes of vegetables and fruits; a light-receiving window of given openness provided in a carrier line, the light-receiving window capable of leading measuring lights having been transmitted through the vegetables and fruits toward a light-receiving section; and means for regulating quantities of transmitted light provided to the light-receiving window, the means for regulating quantities of transmitted light being capable of regulating the openness of the light-receiving window.
摘要:
A surface acoustic wave branching filter includes a first filter and a second filter each including a plurality of surface acoustic wave resonators arranged in a ladder circuit configuration. The first filter in which the frequency range of the passband is relatively low is provided on a first piezoelectric substrate, and the second filter in which the frequency range of the passband is relatively high is provided on a second piezoelectric substrate. The first piezoelectric substrate and the second piezoelectric substrate are rotation Y-cut X-propagation LiTaO3 substrates, and the cut angle of the first piezoelectric substrate is greater than the cut angle of the second piezoelectric substrate.
摘要:
A surface acoustic wave branching filter includes a first surface acoustic wave filter chip having a relatively low center frequency and a second surface acoustic wave filter chip having a relatively high center frequency which are joined to a chip mounting surface of a packaging member. A bump of the second surface acoustic wave filter chip is joined to a signal wiring pattern disposed on the chip mounting surface of the packaging member. The signal wiring pattern is configured to have a pattern portion that is in closer proximity to a ground wiring pattern than to the bump.
摘要:
An extremely convenient apparatus for evaluating the inner quality of vegetables and fruits which is small and inexpensive, can be introduced easily even by small-scaled enterprisers, in which an installation place can be changed easily, and safety and promptness of the replacing work of light sources are fully taking into consideration is provided. An apparatus for evaluating the inner quality of vegetables and fruits 1 comprising: a place bed 3 on which vegetables and fruits A are placed; light sources 4, 4 disposed to irradiate vegetables and fruits A; a spectra/detection unit 28 for making spectra in transmission light C having transmitted through vegetables and fruits A to detect the optical strength; an operation processing section 31 for calculating and evaluating the quality evaluation amount of the sugar degree and the ripening degree on the basis of the detection signal; and a display panel 36 for displaying the quality evaluation amount of the sugar degree and the ripening degree, the apparatus capable of being installed on the table, and also being portable. Further, a light source peripheral temperature T1 and an environmental temperature T2 are detected in a manner of a lapse of time, the light source peripheral temperature T1 is compared with a safety setting temperature Tw or the environmental temperature T2, and the fact that the light source temperature is fully lowered is reported.
摘要:
A surface acoustic wave branching filter reduces deterioration of the insertion loss and improves the isolation characteristics. The surface acoustic wave filter includes first ends of a first acoustic wave filter, having a relatively low passband, and a second acoustic wave filter, having a relatively high passband, connected to a first common terminal which is connected to an antenna. A resonator of the first surface acoustic wave filter, among a plurality of parallel-arm resonators and a plurality of series-arm resonators, which is closest to the first common terminal is a parallel-arm resonator. The capacitance of the parallel-arm resonator that is closest to the first common terminal is less than ½ of the capacitance of the other parallel-arm resonators.
摘要:
One form of evaluation apparatus comprising a plurality of light sources vertically arranged by one side of a carrier line in width direction Y perpendicular to carrying direction X of the carrier line; and a light-receiving section arranged by an opposite side of the carrier line in the width direction Y perpendicular to the carrying direction X of the carrier line. Another form of evaluation apparatus comprising a plurality of light sources capable of irradiating measuring lights of given quantity; means for regulating the quantity of measuring lights from the light sources in accordance with sizes of vegetables and fruits; a light-receiving window of given openness provided in a carrier line, the light-receiving window capable of leading measuring lights having been transmitted through the vegetables and fruits toward a light-receiving section; and means for regulating quantities of transmitted light provided to the light-receiving window, the means for regulating quantities of transmitted light being capable of regulating the openness of the light-receiving window.
摘要:
A surface acoustic wave branching filter reduces deterioration of the insertion loss and improves the isolation characteristics. The surface acoustic wave filter includes first ends of a first acoustic wave filter, having a relatively low passband, and a second acoustic wave filter, having a relatively high passband, connected to a first common terminal which is connected to an antenna. A resonator of the first surface acoustic wave filter, among a plurality of parallel-arm resonators and a plurality of series-arm resonators, which is closest to the first common terminal is a parallel-arm resonator. The capacitance of the parallel-arm resonator that is closest to the first common terminal is less than ½ of the capacitance of the other parallel-arm resonators.
摘要:
In a communication system including a first bandpass filter having a relatively low passband or a second bandpass filter having a relatively high passband, a filter device is used as the first bandpass filter. Series-arm resonators are inserted in a series arm connecting an input terminal and an output terminal. Parallel-arm resonators are connected in parallel arms connecting the series arm and a reference potential. Inductances are connected in series with at least one of the parallel-arm resonators. The resonant frequency of a secondary resonance generated by insertion of the inductances is within or in the vicinity of the passband of the receiver or transmitter bandpass filter serving as a partner filter of the ladder filter.
摘要:
A surface acoustic wave duplexer includes a transmission-side surface acoustic wave filter and a receiving-side surface acoustic wave filter which are connected to an antenna terminal, and the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter are mounted on a package material. The surface acoustic wave duplexer further includes a high-frequency wave element which is connected to the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter, and at the same time, has two trap attenuation poles at the higher frequency side than at least the transmission-side pass band and the receiving-side pass band.