2005 · 13 citations · 2 references
EngineeringElectrical EngineeringAnalog ElectronicsMicrowave EngineeringWireless CommunicationsMicrowave Integrated CircuitsMicrowave MixersMicrowave Network AnalysisMicrowave System DesignMillimeter-wave CommunicationsRadio-frequency Integrated CircuitsConversion GainImage RejectionIntegrated Circuit MixersMicrowave Mixer DesignMixer CircuitsMixers
A direct upconverter for 5 to 6 GHz WLAN is presented that includes circuitry for automatic output spectrum calibration. For calibration, the RF signal is down-converted by reusing the up-conversion mixers, making the up- and down-conversion errors correlated. The transmit errors are determined based on only low-frequency measurements. The realized mixer achieves >40 dB image rejection.
2
Impact of front-end non-idealities on bit error rate performance of WLAN-OFDM transceivers