Portal de Periódicos da CAPES

Correction of frequency-dependent I/Q mismatches in quadrature receivers

2001; Institution of Engineering and Technology; Volume: 37; Issue: 23 Linguagem: Inglês

10.1049/el

1350-911X

Kong‐Pang Pun, J.E. Franca, Carlos Azeredo-Leme, Cheung-Fat Chan, Chiu‐Sing Choy,

Speech and Audio Processing

Correction of frequency-dependent I/Q mismatches in quadrature receivers The I/Q mismatches in wideband receivers designed for multi-channel reception can be frequency-dependent and limit their image rejection performance to an unacceptable level. An adaptive signal-image separation system is proposed to correct the frequency-dependent I/Q mismatches in the digital domain. Simulation results verifying the proposed method are given.