GCT SEMICONDUCTOR, INC.
🏢 View company profile →48Patents
18Active
48Granted
45Portfolio score
Filing activity: Jul 24, 1998 → Oct 17, 2014 · 13 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6498927B2 | Automatic gain control method for highly integrated communication receiver | Electricity | 81 | Expired |
| US6510185B2 | Single chip CMOS transmitter/receiver | Electricity | 43 | Expired |
| US6424192B1 | Phase lock loop (PLL) apparatus and method | Electricity | 42 | Expired |
| US6657498B2 | Variable gain low-noise amplifier for a wireless terminal | Electricity | 42 | Expired |
| US6781424B2 | Single chip CMOS transmitter/receiver and method of using same | Electricity | 40 | Expired |
| US6483355B1 | Single chip CMOS transmitter/receiver and method of using same | Electricity | 39 | Expired |
| US6335952B1 | Single chip CMOS transmitter/receiver | Electricity | 34 | Expired |
| US6512408B2 | Mixer structure and method for using same | Electricity | 31 | Expired |
| US6553089B2 | Fractional-N frequency synthesizer with fractional compensation method | Electricity | 30 | Expired |
| US6313688A | Mixer structure and method of using same | Electricity | 28 | Expired |
| US6704383B2 | Sample and hold type fractional-N frequency synthesizer | Electricity | 23 | Expired |
| US8018990B2 | Apparatus for measuring in-phase and quadrature (IQ) imbalance | Electricity | 22 | Active |
| US6424222B1 | Variable gain low noise amplifier for a wireless terminal | Electricity | 20 | Expired |
| US6876266B2 | LC oscillator with wide tuning range and low phase noise | Electricity | 18 | Expired |
| US6952125B2 | System and method for suppressing noise in a phase-locked loop circuit | Electricity | 13 | Expired |
| US7436265B2 | Clock generator and clock generating method using delay locked loop | Electricity | 13 | Active |
| US7003265B2 | System and method for filtering signals in a transceiver | Electricity | 12 | Expired |
| US6404277B1 | Gm-C tuning circuit with filter configuration | Electricity | 11 | Expired |
| US6850748B2 | RF front end with reduced carrier leakage | Electricity | 11 | Expired |
| US6756828B2 | Phase lock loop (PLL) apparatus and method | Electricity | 10 | Expired |
| US7202741B2 | Highly linear variable gain amplifier | Electricity | 8 | Expired |
| US7512390B2 | System and method for tuning a frequency generator using an LC oscillator | Electricity | 6 | Expired |
| US7035351B1 | Automatic gain control loop apparatus | Electricity | 6 | Expired |
| US6754478B1 | CMOS low noise amplifier | Electricity | 6 | Expired |
| US6538498B2 | Gm-C tuning circuit with filter configuration | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.