A Four-Antenna 802.11a Receiver integrated in 0.25 µm SiGe BiCMOS with Spatial Weighting
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Michael Wickert
,
Uwe Mayer
Abstract
This paper presents the design and results of a four-antenna integrated receiver (RX) frontend in 0.25 µm SiGe BiCMOS. It performs antenna combining in the radio-frequency (RF) domain with IEEE 802.11a compliant signals. Therefore, the RF part of this integrated circuit (IC) includes four low noise amplifiers (LNAs), vector modulators (VMs) and a signal combiner. These circuits can weight the incoming C-band (5.6 GHz) signals in their I- and Q-components with an 8-bit resolution before superposition and downcoversion. The baseband (BB) part of the applied zero-IF architecture integrates an 8th order switched-capacitor (SC) filter for channel selection and variable gain amplifiers (VGAs) for automatic gain control (AGC). Together with digital control logic the power consumption amounts to 350 mW at an area requirement of 7.5 mm2.
©[2012] by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Editorial
- Slew-Rate and Efficiency Trade-off in Slow Envelope Tracking Power Amplifiers
- A Four-Antenna 802.11a Receiver integrated in 0.25 µm SiGe BiCMOS with Spatial Weighting
- Investigation of GaN-HEMT Based Switches for Hybrid Switching Amplifier Supply-Modulators
- Reconfigurable 4 × 4 Switch Matrix for Ka-Band Geo-Stationary Satellite Mission
- On-Orbit Verification of a 4 × 4 Switch Matrix for Space Applications based on the Low Temperature Co-fired Ceramics Technology
- A Novel Sequential Monte Carlo Method Based Synthetic Aperture Reconstruction Approach for Real-Time 3D Wireless Local Positioning
- Extraction of Micro-Doppler Signatures using Automotive Radar Sensors
- Non-Contacting Moisture Sensing using a Dedicated UWB Time Domain Instrument
- Design and Test of an Imaging System for UWB Breast Cancer Detection
Articles in the same Issue
- Masthead
- Editorial
- Slew-Rate and Efficiency Trade-off in Slow Envelope Tracking Power Amplifiers
- A Four-Antenna 802.11a Receiver integrated in 0.25 µm SiGe BiCMOS with Spatial Weighting
- Investigation of GaN-HEMT Based Switches for Hybrid Switching Amplifier Supply-Modulators
- Reconfigurable 4 × 4 Switch Matrix for Ka-Band Geo-Stationary Satellite Mission
- On-Orbit Verification of a 4 × 4 Switch Matrix for Space Applications based on the Low Temperature Co-fired Ceramics Technology
- A Novel Sequential Monte Carlo Method Based Synthetic Aperture Reconstruction Approach for Real-Time 3D Wireless Local Positioning
- Extraction of Micro-Doppler Signatures using Automotive Radar Sensors
- Non-Contacting Moisture Sensing using a Dedicated UWB Time Domain Instrument
- Design and Test of an Imaging System for UWB Breast Cancer Detection
