Il-jong Song
73Patents
6h-index
64Co-inventors
71Inventor score
Filing activity: Sep 20, 2002 → Jan 28, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7233218B2 | Air-gap type FBAR, and duplexer using the FBAR | Emerging Cross-Sectional Technologies | 38 | Expired |
| US7053730B2 | Fabricating methods for air-gap type FBARs and duplexers including securing a resonating part substrate to a cavity forming substrate | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7978077B2 | RFID reader and RFID tag using UHF band and action methods thereof | Electricity | 12 | Active |
| US9674646B2 | Near field communication chip embedded in a wearable electronic device and wearable electronic device | Electricity | 12 | Active |
| US7482930B2 | Limiter for controlling overvoltage and RFID tag having the same | Physics | 10 | Active |
| US7893792B2 | Duplexer using an embedded PCB and method of fabricating the same | Emerging Cross-Sectional Technologies | 6 | Active |
| US8410905B2 | RFID reader cancelling leakage signal | Electricity | 6 | Active |
| US9218518B2 | Method of operating contactless IC card reader, detection circuit of contactless IC card reader, contactless IC card reader and card system including the same | Physics | 5 | Active |
| US7503690B2 | Temperature measurement apparatus and method for measuring temperatures by using RF signals of different frequencies | Physics | 5 | Expired |
| US7593690B2 | Signal converter, RFID tag having signal converter, and method of driving RFID tag | Physics | 5 | Active |
| US8035483B2 | Oscillator tuning system and oscillator tuning method | Electricity | 5 | Active |
| US8891270B2 | Voltage adjusting circuit and contactless card and contactless card system which include the same | Electricity | 5 | Active |
| US9800294B2 | NFC antenna module and NFC module including the same | Electricity | 5 | Active |
| US7339485B2 | Rectifier for supplying double voltage and RFID tag thereof | Physics | 5 | Active |
| US7309978B2 | Reference voltage generating circuit with ultra-low power consumption | Electricity | 4 | Active |
| US7205702B2 | Film bulk acoustic resonator and method for manufacturing the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9537983B2 | Housing of a mobile device, near field communication transceiver and mobile device | Electricity | 4 | Active |
| US9755702B2 | Method of operating near field communication (NFC) device and NFC device | Electricity | 4 | Active |
| US10361735B2 | NFC receiver and operation method of circuit comprising the NFC receiver | Electricity | 4 | Active |
| US7095298B2 | Film bulk acoustic resonator having supports and manufacturing method therefore | Emerging Cross-Sectional Technologies | 4 | Expired |
| US10468752B2 | Wireless communication module and portable terminal including the same | Electricity | 4 | Active |
| US10581140B2 | Antenna module having metal frame antenna segment and electronic device including the same | Electricity | 3 | Active |
| US7268685B2 | Radio frequency identification tag for transmitting temperature data and method therefor | Physics | 3 | Expired |
| US9596003B2 | Near field communication devices, systems, and methods using Q factor adjustments | Electricity | 3 | Active |
| US7834661B2 | Ultra-low-power level shifter, voltage transform circuit and RFID tag including the same | Electricity | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.