Kmw Inc

Yong-Won Seo

Young-Chan Moon

Sung-Hwan So

Chang-Seob Choi

Chi-Back Ryu

Sunghwan So

Myung-Hwa Kim

Disclosed is a transmission line-waveguide transition device including side surfaces and a top surface having a size and shape corresponding to a waveguide to which a signal of a transmission line is transmitted, the side surfaces and top surface having a plate shape; and a plate-shaped ridge formed in an inner space defined by the side surfaces and the top surface, the ridge being provided with a slope having one end connected to the transmission line and an opposite end contacting the top surface.

Transmission line-waveguide transition device comprising a waveguide having a ridge connected to the transmission line at a reduced width ground transition area

The present invention provides a waveguide slot array antenna having an excitation slot arrangement radiating a signal corresponding to an operating frequency in a radiation plate, the waveguide slot array antenna comprising: a first auxiliary radiation plate installed on a main radiation plate and rotating a polarization plane of a signal radiated from the excitation slot arrangement of the main radiation plate; and a second auxiliary radiation plate installed on the first auxiliary radiation plate and distributing and radiating the signal, the polarization plane of which has been rotated in the first auxiliary radiation plate.

Waveguide slot array antenna

The present disclosure provides a polarized antenna including a waveguide power divider, a waveguide phase shifter and a radiating unit. The waveguide power divider is configured to have an input waveguide for receiving a transmission signal, and first and second output waveguides for distributing and outputting the transmission signal. The waveguide phase shifter is configured to receive two output signals outputted respectively from the first and second output waveguides of the waveguide power divider, to variably change a phase difference between the two input signals, and to output respective changed signals. The radiating unit is configured to receive the respective changed signals from the waveguide phase shifter, and to combine and radiate the respective changed signals as a radio signal.

Waveguide power divider, waveguide phase shifter, and polarized antenna using same

The present invention relates to a dual-polarization antenna including an isolation providing device including: a transmission antenna element outputting a transmission signal provided via a feeder through a first port; a receiving antenna element receiving a reception signal so as to provide same to the second port; a first coupler distributing part of the transmission signal; an equalizer equalizing the distributed signal from the first coupler to a preset waveform; a second coupler receiving the output of the equalizer so as to couple same to a signal output to the second port; and a conductor forming a signal delivery path between the first coupler, the equalizer, and the second coupler. The coupling performance of the first and second couplers, the length of the conductor, and the functional characteristics of the equalizer are designed to allow a signal coupled to the second port through the signal delivery path using the conductor to have substantially identical amplitudes and a 180 phase difference, and an identical shape in an overall operating frequency band in contrast to a signal falsely inputted to a receiving antenna from the transmitting antenna element.

Growing community of inventors

Hwaseong-si, South Korea

Yong-Won Seo