Patent ID: 6989750
Filing Date: 2006-01-24
Classification: G06K,G08B,G11C,H04L

Abstract:
1. A radio frequency identification (RFID) integrated circuit (IC), comprising: a first antenna pad; a second antenna pad; a first modulator coupled to said first antenna pad, wherein said first modulator is configured to backscatter modulate a first symbol received from said first antenna pad with a response symbol, wherein said first modulator is configured to output said backscatter modulated first symbol to said first antenna pad; a second modulator coupled to said second antenna pad, wherein said second modulator is configured to backscatter modulate a second symbol received from said second antenna pad with the response symbol, wherein said second modulator is configured to output said backscatter modulated second symbol to said second antenna pad; a first charge pump coupled to said first antenna pad, said first charge pump configured to convert a first high frequency signal from said first antenna pad to a first substantially direct current (DC) voltage; and a second charge pump coupled to said second antenna pad, said second charge pump configured to convert a second high frequency signal from said second antenna pad to a second substantially direct current (DC) voltage.