An RFID backscatter interrogator for transmitting data to an RFID tag, generating a carrier for the tag, and receiving data from the tag modulated onto the carrier, the interrogator including a single grounded-coplanar wave-guide circuit board and at least one surface mount integrated circuit supported...http://www.google.co.uk/patents/US7155172?utm_source=gb-gplus-sharePatent US7155172 - RFID receiver apparatus and method
