A 5.2/5.8 GHz Dual Band On-Off Keying Transmitter Design for Bio-Signal Transmission
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Chang-Hsi Wu
,
Hong-Cheng You
Abstract
An architecture of 5.2/5.8-GHz dual-band on-off keying (DBOOK) modulated transmitter is designed in a 0.18-μm CMOS technology. The proposed DBOOK transmitter is used in the biosignal transmission system with high power efficiency and small area. To reduce power consumption and enhance output swing, two pairs of center-tapped transformers are used as both LC tank and source grounding choke for the designed voltage controlled oscillator (VCO). Switching capacitances are used to achieve dual band operations, and a complemented power combiner is used to merge the differential output power of VCO to a single-ended output. Besides, the linearizer circuits are used in the proposed power amplifier with wideband output matching to improve the linearity both at 5.2/5.8-GHz bands. The designed DBOOK transmitter is implemented by dividing it into two chips. One chip implements the dual-band switching VCO and power combiner, and the other chip implements a linear power amplifier including dual-band operation. The first chip drives an output power of 2.2mW with consuming power of 5.13 mW from 1.1 V supply voltage. With the chip size including pad of 0.61 × 0.91 m2, the measured data rate and transmission efficiency attained are 100 Mb/s and 51 pJ/bit, respectively. The second chip, for power enhanced mode, exhibits P1 dB of −9 dBm, IIP3 of 1 dBm, the output power 1 dB compression point of 12.42 dBm, OIP3 of about 21 dBm, maximum output power of 17.02/16.18 dBm, and power added efficiency of 17.13/16.95% for 5.2/ 5.8 GHz. The chip size including pads is 0:693 × 1:084mm2.
Acknowledgment
The authors would like to acknowledge the support of the National Science Council of Taiwan, under Contract No. NSC 102-2220-E-262-001. The authors would also like to thank the National Chip implementation Center (CIC) for technical support.
References
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Articles in the same Issue
- Chemical sensors based on surface charge transfer
- Computational approach to the study of morphological properties of polymer/fullerene blends in photovoltaics
- Grignard Reagents and Palladium
- A 5.2/5.8 GHz Dual Band On-Off Keying Transmitter Design for Bio-Signal Transmission
- Impacts of ESD Reliability by Different Layout Engineering in the 0.25-μm 60-V High-Voltage LDMOS Devices
- Erratum to: Theoretical Study of the Electronic States of Newly Detected Dications. Case of MgS2+ AND SiN2+
- Erratum to: Optical and Magnetic Properties of Free-standing Silicene, Germanene and T-graphene System
- Erratum to: Analytical Solution of Pantograph Equation with Incommensurate Delay
- Erratum to: Addressing the challenges of standalone multi-core simulations in molecular dynamics
- Erratum to: NanoSQUIDs: Basics & recent advances
