International Journal of RF and Microwave Computer-Aided Engineering
This article presents the design, simulation, fabrication, and measurement of a compact power-har... more This article presents the design, simulation, fabrication, and measurement of a compact power-harvesting circuit. A quadrature hybrid coupler is used for this harvesting circuit because of its advantageous matching, high isolation, and lossless characteristic. It properly feeds the bridge rectifier, combining the signals received with two antennas. The bridge rectifier component is a turnout full-wave rectification from a two-wire alternative current input. The measurements found output power to be −25.5 dBm using a 5 KΩ load resistor, at 5 GHz. The transmitter antenna input power level is 7 dBm, at 50 cm distance. Both results of the Friis Equation and the measurements are in agreement. According to the results, the power-harvesting circuit can operate for wireless local area network sensor applications.
A continuous-wave (CW) radar sensor design based on a millimetre-wave six-port interferometer is ... more A continuous-wave (CW) radar sensor design based on a millimetre-wave six-port interferometer is proposed. A complete sensor prototype is conceived of, fabricated and measured at 77 GHz for short-range professional and industrial applications. This sensor is designed to measure distances and Doppler frequencies with high accuracy, at a reasonable cost. Accurate phase measurements are also performed using the six-port technology, which makes it a promising candidate for CW radar sensing applications. Advances in the performance and functionality of six-port sensors are surveyed to highlight recent progress in this area. These include improvements in design, low power consumption, high signal to noise ratio, compactness, robustness and simplicity in realization. Given the fact that they are easy to fabricate, due to the lack of active circuits and being highly accurate, it is expected that six-port sensors will significantly contribute to the development of human tracking devices and ...
International Journal of Digital Multimedia Broadcasting
Millimeter-wave multiport transceiver architectures dedicated to 60 GHz UWB short-range communica... more Millimeter-wave multiport transceiver architectures dedicated to 60 GHz UWB short-range communications are proposed in this paper. Multi-port circuits based on90°hybrid couplers are intensively used for phased antenna array, millimeter-wave modulation and down-conversion, as a low-cost alternative to the conventional architecture. This allows complete integration of circuits including antennas, in planar technology, on the same substrate, improving the overall transceiver performances.
2006 Canadian Conference on Electrical and Computer Engineering, 2006
ABSTRACT The six-port technology, originally used to perform complex reflection coefficient measu... more ABSTRACT The six-port technology, originally used to perform complex reflection coefficient measurements of a microwave device, is an excellent candidate for the future millimeter-wave wireless communication systems. The millimeter-wave frequency conversion is performed using a passive circuit, the six-port, avoiding the conventional millimeter-wave active costly mixers. Basically, the six-port circuit is an additive mixer in which the resulting sum of millimeter-wave signals is nonlinearly processed using millimeter-wave detectors. A new V-band six-port circuit designed in MHMIC technology is presented in this paper. The operating principle of the proposed heterodyne receiver and demodulation results of V-band high-speed MPSK/QAM signals are presented and discussed. According to high-speed requirements of the IEEE 802.15.3.c wireless standard (100-400 Mb/s), the IF of this receiver was chosen at 900 MHz. A second frequency conversion using conventional means is used. Initial results show more that 70 dB of overall gain of the six-port heterodyne receiver
International Journal of RF and Microwave Computer-Aided Engineering
This article presents the design, simulation, fabrication, and measurement of a compact power-har... more This article presents the design, simulation, fabrication, and measurement of a compact power-harvesting circuit. A quadrature hybrid coupler is used for this harvesting circuit because of its advantageous matching, high isolation, and lossless characteristic. It properly feeds the bridge rectifier, combining the signals received with two antennas. The bridge rectifier component is a turnout full-wave rectification from a two-wire alternative current input. The measurements found output power to be −25.5 dBm using a 5 KΩ load resistor, at 5 GHz. The transmitter antenna input power level is 7 dBm, at 50 cm distance. Both results of the Friis Equation and the measurements are in agreement. According to the results, the power-harvesting circuit can operate for wireless local area network sensor applications.
A continuous-wave (CW) radar sensor design based on a millimetre-wave six-port interferometer is ... more A continuous-wave (CW) radar sensor design based on a millimetre-wave six-port interferometer is proposed. A complete sensor prototype is conceived of, fabricated and measured at 77 GHz for short-range professional and industrial applications. This sensor is designed to measure distances and Doppler frequencies with high accuracy, at a reasonable cost. Accurate phase measurements are also performed using the six-port technology, which makes it a promising candidate for CW radar sensing applications. Advances in the performance and functionality of six-port sensors are surveyed to highlight recent progress in this area. These include improvements in design, low power consumption, high signal to noise ratio, compactness, robustness and simplicity in realization. Given the fact that they are easy to fabricate, due to the lack of active circuits and being highly accurate, it is expected that six-port sensors will significantly contribute to the development of human tracking devices and ...
International Journal of Digital Multimedia Broadcasting
Millimeter-wave multiport transceiver architectures dedicated to 60 GHz UWB short-range communica... more Millimeter-wave multiport transceiver architectures dedicated to 60 GHz UWB short-range communications are proposed in this paper. Multi-port circuits based on90°hybrid couplers are intensively used for phased antenna array, millimeter-wave modulation and down-conversion, as a low-cost alternative to the conventional architecture. This allows complete integration of circuits including antennas, in planar technology, on the same substrate, improving the overall transceiver performances.
2006 Canadian Conference on Electrical and Computer Engineering, 2006
ABSTRACT The six-port technology, originally used to perform complex reflection coefficient measu... more ABSTRACT The six-port technology, originally used to perform complex reflection coefficient measurements of a microwave device, is an excellent candidate for the future millimeter-wave wireless communication systems. The millimeter-wave frequency conversion is performed using a passive circuit, the six-port, avoiding the conventional millimeter-wave active costly mixers. Basically, the six-port circuit is an additive mixer in which the resulting sum of millimeter-wave signals is nonlinearly processed using millimeter-wave detectors. A new V-band six-port circuit designed in MHMIC technology is presented in this paper. The operating principle of the proposed heterodyne receiver and demodulation results of V-band high-speed MPSK/QAM signals are presented and discussed. According to high-speed requirements of the IEEE 802.15.3.c wireless standard (100-400 Mb/s), the IF of this receiver was chosen at 900 MHz. A second frequency conversion using conventional means is used. Initial results show more that 70 dB of overall gain of the six-port heterodyne receiver
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