Inventor · Cupertino, CA, US

Hongfei Hu

55Patents
11h-index
82Co-inventors
77Inventor score

Filing activity: Jan 4, 2012 → Sep 11, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US9537219B2 Electronic device with passive antenna retuning circuitry Electricity 46 Active
US9214718B2 Methods for characterizing tunable radio-frequency elements Physics 35 Active
US8798554B2 Tunable antenna system with multiple feeds Electricity 32 Active
US9654164B2 Removable electronic device case with supplemental wireless circuitry Electricity 24 Active
US10200092B1 Electronic device having multiple antennas with shared structures for near-field communications and non-near-field communications Electricity 21 Active
US9236659B2 Electronic device with hybrid inverted-F slot antenna Electricity 21 Active
US9203139B2 Antenna structures having slot-based parasitic elements Electricity 19 Active
US9350069B2 Antenna with switchable inductor low-band tuning Electricity 17 Active
US9325080B2 Electronic device with shared antenna structures and balun Electricity 16 Active
US9276319B2 Electronic device antenna with multiple feeds for covering three communications bands Electricity 15 Active
US9876272B2 Electronic device antenna with embedded parasitic arm Electricity 11 Active
US9337537B2 Antenna with tunable high band parasitic element Electricity 10 Active
US10476167B2 Adjustable multiple-input and multiple-output antenna structures Electricity 10 Active
US10862216B1 Electronic devices having indirectly-fed slot antenna elements Electricity 10 Active
US9972891B2 Electronic device antenna with isolation mode Electricity 10 Active
US9444425B2 Electronic device with adjustable wireless circuitry Electricity 10 Active
US9728858B2 Electronic devices with hybrid antennas Electricity 9 Active
US9647332B2 Electronic device antenna with interference mitigation circuitry Electricity 9 Active
US9531061B2 Electronic device antenna with reduced lossy mode Electricity 8 Active
US8995926B2 Methods and apparatus for performing coexistence testing for multi-antenna electronic devices Electricity 8 Active
US9190712B2 Tunable antenna system Electricity 7 Active
US10056695B2 Electronic device antenna with switchable return paths Electricity 6 Active
US11205834B2 Electronic device antennas having switchable feed terminals Electricity 6 Active
US10200105B2 Antenna tuning components in patterned conductive layers Electricity 6 Active
US11322840B2 Wireless devices having antennas for covering multiple frequency bands Electricity 5 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.