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Certificates & Patents

  • Control circuit of high power factor switching rectifier

  • Switching power supply using parallel transformer

  • Microstrip Dual-Band Bandpass Filter Using Stepped Impedance Resonator

  • Microwave Bias-T for High Power Amplifiers

  • Asymmetric Doherty Power Amplifier

  • Multiband high efficiency power amplifier

  • RF Divider 20200212

  • Hybrid antenna based on waveguide beamforming array for 5G and LTE coexistence

  • Wireless LAN Communication System using Bidirectional Amplifier

  • Antenna fixing device and communication device having the same

  • Disinfection device spraying sterilization mist