Abstract: A method and system for controlling the flow of postal mail in real-time are provided. The logistical system includes a pre-application processing system, a real-time mail planning and adjusting system, and a real-time working planning and performing system. The pre-application processing system registers bulk mail inputted in a generating system for generating bulk mail, and includes sending data and quantity data of the registered bulk mail. The real-time mail planning and adjusting system collects predetermined working plan quantities to process the pre-application that processes the quantity data for respective distribution centers, compares operating reference data of transport vehicles between the distribution centers to set transport vehicle dates, and allocates temporary vehicles when a quantity for delivery between the distribution centers exceeds processing capacities of the distribution centers.

Abstract: A waveguide diplexer having an electric plane T-junction structure with a resonant iris is disclosed. The waveguide includes: a waveguide having a predetermined shaped cross section; a transmitting filter for preventing to generate a harmonic band and a higher mode in a receiving band by changing impedance to have a low pass characteristic inside the waveguide; a receiving filter for minimizing an insertion loss by changing impedance to have a bandpass characteristic inside the waveguide; an electric plane T-junction for isolating/combining a transmitting signal and a receiving signal without electric interference by connecting the transmitting filter and the receiving filter, and minimizing interference of a frequency transmitted/received through the transmitting filter and the receiving filter; and an impedance converter for differentiating a transmitting port and a receiving port with minimum electric interference to the transmitting filter and the receiving filter by changing the impedance.

Abstract: The present invention relates to a microwave variable attenuator variably attenuating while maintaining a matching state. The microwave variable attenuator includes: an input terminal for inputting a microwave signal; an output terminal for outputting a microwave signal; a control voltage supplying unit for supplying a control voltage; an input terminal matching unit for matching an impedance of the input terminal in response to the control voltage; an output terminal matching unit for matching an impedance of the output terminal in response to the control voltage; and an attenuating unit for attenuating the microwave signal inputted to the input terminal based on an attenuation controlled according to the control voltage and outputting the attenuated microwave signal, wherein the attenuating unit includes a pin diode and a resonant inductor connected each others in parallel for resonating an effect of a parallel capacitance.

Abstract: A system and method for automatic processing of special service logistic including a registered mail, a credit card, an insured mail, a receiver confirm mail and billing to mail receiver are provided. The system and method for automatic processing of special service logistic improves the rate of auto processing articles and provides the reliability and the security of the processing result through automatically processing the article and creating the delivery information thereof using receipt information although a postcode is not present in a barcode.

Abstract: Disclosed herein is an apparatus for processing postal logistics using Radio Frequency Identification (RFID), and a method using the same. The postal logistics processing apparatus includes a postal matter receipt system for registering receipt information of received postal matter, and issuing an RFID tag corresponding to the postal matter receipt information; a postal matter collection system for reading the RFID tag for the postal matter when the postal matter is transported from the postal matter receipt system, and automatically sorting the postal matter; and a postal matter delivery system for receiving the postal matter from the postal matter collection system, reading the RFID tag for the postal matter, and delivering the postal matter to a corresponding postal destination.

Abstract: Disclosed herein is a Radio Frequency Identification (RFID) tag for a postal logistics processing apparatus and a data configuration method thereof. The RFID tag for a postal logistics processing apparatus includes: a first area in which identification information of the tag is stored; a second area in which identification information for each service operation for processing a postal matter corresponding to the tag is stored; and a third area in which at least one of postal matter information and container information is stored, wherein the postal matter and the container correspond to the tag. Thus, by providing a configuration of an RFID tag and a configuration method of RFID tag information for a postal code using the RFID, it is possible to effectively and easily introduce an RFID technology in postal logistics environment.

Abstract: A registered mail management system and a method thereof are provided. The registered mail management system and the method automatically sorts out and distributes registered mails based on destination zip codes. Therefore, the enormous costs for the manual registered mail management are reduced and the inefficiency in the registered mail management is improved.

Abstract: A realization method of a multiple passband filter that equalizes a group delay without using an external equalizer is disclosed. The realization method includes the steps of: a) calculating a transfer function based on poles and zeros; b) extracting an input/output coupling coefficient and a coupling matrix from the calculated transfer function as a network parameter; and c) physically designing and realizing elements of the filter to have the extracted network parameter.

Abstract: The present invention relates to a microwave variable attenuator variably attenuating while maintaining a matching state. The microwave variable attenuator includes: an input terminal for inputting a microwave signal; an output terminal for outputting a microwave signal; a control voltage supplying unit for supplying a control voltage; an input terminal matching unit for matching an impedance of the input terminal in response to the control voltage; an output terminal matching unit for matching an impedance of the output terminal in response to the control voltage; and an attenuating unit for attenuating the microwave signal inputted to the input terminal based on an attenuation controlled according to the control voltage and outputting the attenuated microwave signal, wherein the attenuating unit includes a pin diode and a resonant inductor connected each others in parallel for resonating an effect of a parallel capacitance.

Abstract: A waveguide diplexer having an electric plane T-junction structure with a resonant iris is disclosed. The waveguide includes: a waveguide having a predetermined shaped cross section; a transmitting filter for preventing to generate a harmonic band and a higher mode in a receiving band by changing impedance to have a low pass characteristic inside the waveguide; a receiving filter for minimizing an insertion loss by changing impedance to have a bandpass characteristic inside the waveguide; an electric plane T-junction for isolating/combining a transmitting signal and a receiving signal without electric interference by connecting the transmitting filter and the receiving filter, and minimizing interference of a frequency transmitted/received through the transmitting filter and the receiving filter; and an impedance converter for differentiating a transmitting port and a receiving port with minimum electric interference to the transmitting filter and the receiving filter by changing the impedance.

Abstract: A high power amplifier operating point determination apparatus and method determines an operating point of a high power amplifier for satellite communications system. For the purpose, the apparatus employs a DC voltage converting block in a channel amplifier located at a front-end of the high power amplifier, which couples an output power of the channel amplifier and converts the coupled output power to a DC voltage. Accordingly, in a ground monitoring center, before satellite launching, there are mapped the output power value of the high power amplifier and the DC voltage level of the channel amplifier per each command step assigned to an FGM or an ALC mode. After the satellite launching, it is possible to detect the operating point and the output power level of the high power amplifier based on mapped results by using the DC voltage level as telemetry information.

Abstract: A high power amplifier operating point determination apparatus and method determines an operating point of a high power amplifier. For the purpose, the apparatus employs a DC voltage converting block in a channel amplifier located at a front-end of the high power amplifier, which couples an output power of the channel amplifier and converts the coupled output power to a DC voltage. Accordingly, in a ground monitoring center, before satellite launching, there are mapped the output power value of the high power amplifier and the DC voltage level of the channel amplifier per each command step assigned to an FGM or an ALC mode. After the satellite launching, it is possible to detect the operating point and the output power level of the high power amplifier based on mapped results by using the DC voltage level as telemetry information.