摘要:
A butler matrix and a multi-port amplifier having the same, capable of splitting a single input signal into N-signals or combining N-signals into a single output are provided. The hybrids are provided in a predetermined disposition, the input port and the output port of the hybrids are provided in a predetermined direction and the waveguides are provided in a bended structure such that paths for connecting the hybrids have no crossing portion.
摘要:
A butler matrix and a multi-port amplifier having the same, capable of splitting a single input signal into N-signals or combining N-signals into a single output are provided. The hybrids are provided in a predetermined disposition, the input port and the output port of the hybrids are provided in a predetermined direction and the waveguides are provided in a bended structure such that paths for connecting the hybrids have no crossing portion.
摘要:
A drainage control device for washing machines is disclosed. This device controls the drain port, provided at the bottom of a washing tub, thus draining water from the washing tub in accordance with an operational mode of a washing machine. This drainage control device includes a first drive means containing a working fluid and operated in response to a change in volume of the working fluid, and a second drive means connected to the first drive means and controlling inflow and outflow of the working fluid relative to the first drive means. The first drive means comprises a first cylinder containing the working fluid, a first piston reciprocating within the first cylinder, a heating means used for heating the first piston, and an actuation rod operated in conjunction with both the first piston and the heating means to open or close the drain port. This device is less likely to cause operational errors or operational noises regardless of long periods of use, and also has a simple construction, a reduced number of parts, and is produced at low cost due to the simple construction.
摘要:
A microstrip cross coupling bandpass filter includes an input port, an input resonator, an output port, and an output resonator. The input port and the input resonator are electric-coupled, and the output port and the output resonator are electric-coupled. A cross coupling gap corresponding to the distance between the input and output resonators forms magnetic coupling. The bandpass filter further includes a cross coupling line electric-coupled with the input and output ports. The cross coupling gap generates an attenuation pole on the high side of a passband. The attenuation frequency of the attenuation pole can be varied with the distance of the cross coupling gap. The cross coupling line generates an attenuation pole on the high and low sides of the passband.