PHASE SHIFTER

The present invention discloses a phase shifter, which comprises at least two layered chambers, wherein, in each chamber two parallel-arranged metal guide sleeves and a U-shaped conductor are set, the two free ends of the U-shaped conductor are respectively inserted into the two metal guide sleeves, and the free ends of the U-shaped conductor move relatively to the metal guide sleeves so as to change the phase of the output signal of the phase shifter. Using the phase shifter provided in the present invention enables the phase control of each radiating element to be very convenient. Furthermore, the phase shifter is simple in structure and inexpensive. 1. A phase shifter , characterized in that the phase shifter comprises at least two layered chambers , wherein in each chamber two parallel-arranged metal guide sleeves and a U-shaped conductor are set , two free ends of the U-shaped conductor are respectively inserted into the two metal guide sleeves , and the free ends of the U-shaped conductor move relatively to the metal guide sleeves so as to change a phase of an output signal of the phase shifter.2. The phase shifter according to claim 1 , characterized in that the phase shifter includes a metal housing divided into the layered chambers by a metal partition plate.3. The phase shifter according to claim 2 , characterized in that each of the chambers further includes an insulation support for supporting the metal partition plate.4. The phase shifter according to claim 1 , characterized in that the phase shifter includes an upper cover plate claim 1 , a lower bottom plate claim 1 , a side plate and at least one metal partition plate; the upper cover plate claim 1 , the lower bottom plate and the side plate form a metal housing; and the metal housing is divided into the layered chambers by the metal partition plate.5. The phase shifter according to claim 4 , characterized in that the metal housing is divided as an E-shaped metal housing by the metal partition plate. ...

Parking Management System and Parking Management Method

A parking management system and a parking management method are disclosed. The parking management system includes a control device and a parking space boundary indicating device. The control device is configured to acquire width size information of a vehicle to be parked and information of the vacant area where no vehicle is parked in a parking lot, determine parking area information of the vehicle to be parked according to the width size information and the information of the vacant area, and send the parking area information to the parking space boundary indicating device; the parking space boundary indicating device is configured to form parking space boundary lines by shedding light on a parking area according to the parking area information.

Phase shifter

The present invention discloses a phase shifter, which comprises at least two layered chambers, wherein, in each chamber two parallel-arranged metal guide sleeves and a U-shaped conductor are set, the two free ends of the U-shaped conductor are respectively inserted into the two metal guide sleeves, and the free ends of the U-shaped conductor move relatively to the metal guide sleeves so as to change the phase of the output signal of the phase shifter. Using the phase shifter provided in the present invention enables the phase control of each radiating element to be very convenient. Furthermore, the phase shifter is simple in structure and inexpensive.

Vacuum cleaner

Solar prefabricated wall and its modular building unit

Method and device for enabling target vehicle to pass rapidly

A method and device for enabling a target vehicle to pass rapidly, the method comprising: determining a traffic route of the target vehicle according to the location and destination of the target vehicle (S101); acquiring in real time position information of the target vehicle (S102); and according to the real-time position information and traffic route of the target vehicle, controlling a lane indication device in the traffic route to indicate a dedicated lane used by the target vehicle in the traffic route, and when the target vehicle passes an intersection, controlling a traffic signal lamp to indicate to vehicles interfering with the transit of the target vehicle to stop driving (S103).