Title :
5 GHz Monolithic CMOS Transmitter and Antenna for Short-Range Communications
Author :
Shamim, A. ; Arsalan, Muhammad ; Roy, Langis
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, ON
Abstract :
A monolithically integrated Voltage Controlled Oscillator (VCO) transmitter (TX) for radiation sensor wireless readout is presented. The design is very well suited to wireless transmission of radiation sensor data in radiotherapy and to Extra Vehicular Activity Radiation Monitoring (EVARM) in space. The TX includes an on-chip loop antenna which also acts as the inductor for the VCO resonant tank circuit. The antenna dimensions of 0.5 mm2 are the smallest reported for an active antenna in the 5 GHz band. The VCO circuit is placed inside the loop antenna to optimize chip space. The complete TX chip size is only 1.5 mm2. The TX device consumes 3.3 mW of power and delivers -0.9 dBm of radiated power, sufficient to communicate with a low noise receiver connected to an off-chip patch antenna placed 1.38 m away.
Keywords :
CMOS integrated circuits; loop antennas; microwave antennas; radio transmitters; voltage-controlled oscillators; distance 1.38 m; extra vehicular activity radiation monitoring; frequency 5 GHz; low noise receiver; monolithic CMOS transmitter; monolithically integrated voltage controlled oscillator transmitter; off-chip patch antenna; on-chip loop antenna; power 3.3 mW; radiation sensor wireless readout; radiotherapy; resonant tank circuit; short-range communications; wireless transmission; On-chip antenna; integrated transmitter; wireless dosimeter readout;
Conference_Titel :
Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-0-86341-842-6
