摘要:
For removing the variation of resonant frequency of the 1/4 .lambda.g coaxial resonator, which is caused by the external connection as a result of conventional capacitive coupling, a 1/4 .lambda.g line having both ends opened is coupled to the 1/4 .lambda.g resonant line having one end shorted through distributed inductive coupling, so as to provide a basic structure of the dielectric resonator of the invention, which can be arranged in usual various types of circuits such as filters, multiplexers and the like with excellent and stable performances.
摘要:
In order to efficiently and steadily remove a frequency-fluctuating interference wave, for instance, a leakage wave of a household electronic oven, intermixed into a received wave for communication, adaptively to the frequency deviation and the frequency fluctuation of the interference wave, a rejection band component included in the received wave applied onto a circulator an output terminal of which is connected with a variable band rejection filter is reflected from the output terminal on which impedance mismatch is caused by zero-impedance presented by the rejection filter on the basis of absorption of input wave and applied to a detector through the circulator again, in response to a detection output of which a so-called mountaineering control is effected on the variable band rejection filter for shifting the rejection band, so as to maximize the detection output of the detector adaptively to the frequency deviation and the frequency fluctuation of the interference wave.
摘要:
A distributed constant type multiple-line circuit is described which comprises a dielectric block (60) having shield conductors (62,64) on its rear surface and all the peripheral side surfaces, a central conductor (1) extending in the block in the front-to-rear thickness direction at the central portion thereof, a first plurality of conductors (2-5) positioned around and parallel to the central conductor and inductively coupled therewith, and a second plurality of conductors (2'-5') positioned nearby and parallel to the first conductors and inductively coupled therewith, respectively. The length of the central conductor is equal to one quarter of the wavelength of the central frequency (f.sub.1) in a frequency band, and the rear end thereof is isolated with the shield conductor on the rear surface of the block. Each of the lengths of the first conductors is equal to one quarter of the wavelength of a predetermined frequency (f.sub.2 -f.sub.5) in the frequency band, and the rear ends thereof are shorted with the shield conductor on the rear surface of the block. Each of the lengths of the second conductors is equal to that of the corresponding one of said first conductors, and the rear ends thereof are isolated with the shield conductor on the rear surface of the block. An input signal (S.sub.IN) iS input to the front end of the central conductor, and signal components of frequencies (f.sub.2 -f.sub.5) are respectively output through the first conductors from the front ends of the second conductor.
摘要:
In order to efficiently and steadily remove a frequency-fluctuating interference wave, for instance, a leakage wave of a household electronic oven, intermixed into a received wave for communication, adaptively to the frequency deviation and the frequency fluctuation of the interference wave, a rejection band component included in the received wave applied onto a circulator, an output terminal of which is connected with a variable band rejection filter, is reflected from the output terminal on which impedance mismatch is caused by zero-impedance presented by the rejection filter on the basis of absorption of the input wave and applied to a detector through the circulator again, in response to a detection output of which a so-called peak-keeping control is effected on the variable band rejection filter for shifting the rejection band, so as to maximize the detection output of the detector adaptively to the frequency deviation and the frequency fluctuation of the interference wave.
摘要:
A sensor unit may include a ceramic member including a first face and a second face opposite to each other with a predetermined interval, a sensor part mounted on the first face, a plurality of metal pins fixed to the second face, a plurality of internal wirings passing through the ceramic member, each of the plurality of internal wirings connecting the sensor part with one of the plurality of metal pins, and a metal member formed on a circumferential end of the second face and joined with a housing by welding.
摘要:
A screw compressor includes a screw rotor, a gate rotor and an injection mechanism. The screw rotor is provided with multiple helical grooves. The gate rotor is provided with multiple gates meshing with the helical grooves to form at least one compression chamber between at least one of the helical grooves and at least one of the gates. The compression chamber is configured and arranged such that refrigerant taken-in from a starting-end side of the helical groove is compressed and discharged from a dead-end side of the helical groove. The injection mechanism is configured and arranged to inject oil or refrigerant from a discharge hole of the injection mechanism into the compression chamber such that rotational torque is imparted in a direction in which the screw rotor is rotated at a time of compression.
摘要:
An engine 20 includes a two-plane type crankshaft 30 and a balancer shaft 50 for reducing a primary couple of the balancer shaft 50. The crankshaft 30 includes a crankshaft body 30a and a first gear 38. The first gear 38 is disposed at one axial end side of a first crank web pair 31a disposed at the outermost one axial end side of the crankshaft 30. In the engine 20 including the two-plane type crankshaft, the weight of the engine can be reduced while securing high reliability.
摘要:
A pulley unit comprises a pulley, a shaft relatively rotatable with the pulley and concentrically arranged inner side of the pulley, a one-way clutch interposed in an annular space between the pulley and the shaft, and a ball bearing arranged adjacent to the one-way clutch in an axial direction in the annular space. The ball bearing has an inner ring and an outer ring. Raceway curvatures of the inner and outer rings of the ball bearing are set to not less than 50.5% and not more than 52.0%.
摘要:
In a fixing structure of a pulley unit in which the pulley unit is attached to a part from which a rotary shaft that is inserted into and is rotatably supported by a central hole of a housing protrudes in a state where the rotary shaft is protruded from an end face of the housing, a housing side end portion of the pulley unit is inserted into an opening side area in the central hole of the housing so that an outer peripheral face of the housing side end portion of the pulley unit overlays an inner peripheral face of the opening side area in the central hole of the housing in a shaft center direction.
摘要:
An inner ring is shaped in its contour by a cold-shaping treatment and is hardened on its surface by a nitrosulphurizing treatment or a soft-nitriding treatment. As a result, the hardness of the surface of the inner ring is enhanced by the cold-shaping treatment and further by the subsequent hardening treatment. As a result, the inner ring is improved in its wear resistance and its seizure resistance. Moreover, the hardening treatment is effected by the nitrosulphurizing treatment or the soft-nitriding treatment so that it can be suppressed from straining in that treating procedure.