Title :
A low noise microwave and millimeter wave source
Author :
Song, Yamei ; Li, Chunxiu ; Duan, Zequn ; Zhang, Yuan ; Zhang, Feifei
Author_Institution :
Res. Inst. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A wide frequency coverage signal generator featuring low phase noise is developed, based upon an extremely low noise 125 MHz reference source. The generator is aimed at providing a five point frequency signal (125 MHz, 500 MHz, 1 GHz, 10 GHz as well as 30 GHz) within microwave and millimeter wave bands. A frequency multiplier chain has been carefully designed to guarantee the pre-assigned low noise specification. Low noise Schottky diodes are employed to build the doublers in which high performance doubling is set in a bridge configuration. The phase noises at offset frequency of 100 kHz measured by an HP3047A reach -175,-161,-153, -131 and -121dBc/Hz at the above mentioned five point frequencies, respectively.
Keywords :
Schottky diodes; bridge circuits; crystal oscillators; frequency multipliers; microwave generation; millimetre wave generation; phase noise; signal generators; 1 GHz; 10 GHz; 125 MHz; 30 GHz; 500 MHz; bridge configuration doublers; frequency doublers; frequency multiplier chain; low noise Schottky diodes; low noise amplifier; low noise microwave wave source; low noise millimeter wave source; low noise multiplier; low phase noise crystal oscillator; wide frequency coverage signal generator; Bridges; Frequency measurement; Microwave generation; Millimeter wave measurements; Noise generators; Noise measurement; Phase measurement; Phase noise; Schottky diodes; Signal generators;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1495300
