Abstract: Disclosed is a dual-band phase shifter in which series/parallel resonance circuits are applied to a polyphase filter to implement a phase shifter, which is a core block of a multi-channel RFIC for implementing a phased array antenna system. The dual-band phase shifter may be configured by converting a capacitor (C) of an LC circuit or a CL circuit in the RFIC into a series resonance circuit and converting an inductor (L) thereof into a parallel resonance circuit, so that a signal generator operating in one frequency band can operate in a dual-band.

Abstract: An embodiment side structure of a vehicle body includes a side body, a surround panel coupled to the side body and having an opening, and a side outer panel including a plastic composite material coupled to the surround panel. In an embodiment, the surround panel includes a plurality of pillar reinforcement parts coupled to a plurality of pillars provided on the side body, a side sill reinforcement part coupled to a side sill provided on the side body and connected to the plurality of pillar reinforcement parts, and a rear wheel arch reinforcement part coupled to a rear wheel arch provided on the side body and connected to the plurality of pillar reinforcement parts.

Abstract: A vehicle loop antenna is provided and includes a watertight plate attached to a loop panel and having a plurality of watertight ribs formed on an upper surface thereof. The plurality of watertight ribs particularly limit the introduction of a liquid. Additionally, a base is disposed on the upper surface of the water-tight plate and has a screw part formed on a lower surface thereof. The screw part penetrates through the watertight plate and protrudes to an inner portion of the loop panel. A case is attached to an upper surface of the base and a ground nut is fastened to the screw part to fix the watertight plate and the base to the loop panel. The ground nut includes a plurality of sawteeth formed at an upper end thereof contact the loop panel. The vehicle loop antenna prevents a liquid from being introduced into an interior of a vehicle.

Abstract: A sewage and wastewater treatment plant which comprises a bioreactor having an anaerobic treatment tank for anaerobic treatment, an aerobic contacting tank and a microorganism separation tank located in between the anaerobic and aerobic tanks respectively. In the anaerobic and aerobic tanks a media is provided in a layered honeycomb type arrangement for distributing the wastewater and sewage to be treated and for adherence of microorganisms.