AGILE CIRCULAR POLARIZATION RECEIVER USING IF PHASE INVERSION SWITCHING

We present a receiver configuration which is able to distinguish between right hand and left hand circular polarization senses. The circuit discriminates between the polarization senses by switching between low-side and high-side LO injection when mixing down to IF. The prototype receiver shows 20 dB cross-pol rejection with 12 dB conversion loss.

[1]  Behzad Razavi,et al.  RF Microelectronics , 1997 .

[2]  Y. Rahmat-Samii,et al.  A single layer dual band circularly polarized microstrip antenna for GPS applications , 2002, IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313).

[3]  D.S. Dunn,et al.  A variable polarization ferrite antenna , 1994, Conference Record Southcon.