Figure 1
From: Automatic leaking carrier canceller adjustment techniques
Block diagram of an RFID reader. Block diagram of a simplified RFID reader showing possible detector positions for LCC adjustment routines. PA, power amplifier; CPLR, coupler; I, inphase; Q, quadrature; Det., detector; ADC, analog to digital converter; VGA, variable gain amplifier; BPF, band pass filter; LNA, low-noise amplifier; TX Ant., transmit antenna; RX Ant., receive antenna; UHF, ultrahigh frequency; Vec. Mod, vector modulator; SW, software.