Title :
Design of a Millimeter-Wave CMOS Radiation Oscillator With an Above-Chip Patch Antenna
Author_Institution :
Graduate Sch., Hiroshima Univ.
Abstract :
This brief presents a design method of a millimeter-wave CMOS radiation oscillator for broadband short-range communication. An above-chip patch antenna is proposed for the radiation oscillator. The proposed antenna has a balanced port, which makes it suitable for the direct connection of CMOS cross-coupling transistors. The properties of the antenna are analyzed by an electromagnetic field solver, and, in particular, the input resistance is discussed in detail, so that the condition of millimeter-wave oscillation is satisfied even by CMOS FETs having gains lower than GaAs FETs. Furthermore, on/off-keying modulation can be carried out using switch transistors, and two switching techniques are used to realize a large data rate. A performance of 500 Mb/s and a total efficiency of 0.12, which includes both the antenna and the circuit efficiencies, are confirmed by circuit simulation
Keywords :
CMOS integrated circuits; integrated circuit design; microstrip antennas; millimetre wave integrated circuits; oscillators; CMOS FET; broadband short range communication; chip patch antenna; cross coupling transistors; electromagnetic field solver; millimeter wave CMOS radiation oscillator; Broadband communication; Design methodology; Electromagnetic analysis; FETs; Millimeter wave communication; Millimeter wave technology; Millimeter wave transistors; Oscillators; Patch antennas; Switches; Balanced structure; CMOS integrated circuit; broadband communication; microstrip patch antenna; millimeter-wave; radiation oscillator; short-range communication;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2006.882234
