Title :
Novel phase noise reduction technique using HTSC-limiters
Author :
Massin, F. ; Christange, H. ; Knochel, R.
Author_Institution :
Lehrstuhl fur Hochfrequenztech., Kiel Univ., Germany
Abstract :
This work presents a novel technique for reducing oscillator phase noise. A high-temperature superconducting (HTSC) limiter is implemented in a feedback oscillator in order to operate the amplifier in its linear region. Less 1/f-noise is upconverted by the amplifier which leads to reduced phase noise in the oscillator. A decrease of phase noise up to 10 dB at 1 kHz offset from the carrier could be measured. The new device is well suited for integration in an HTSC microstrip resonator layout.
Keywords :
feedback oscillators; high-temperature superconductors; microwave limiters; microwave oscillators; phase noise; superconducting microwave devices; HTSC limiter; feedback oscillator; high temperature superconductor; microstrip resonator; phase noise; 1f noise; Bridge circuits; Noise reduction; Oscillators; Phase noise; Power amplifiers; Q factor; Semiconductor device noise; Semiconductor diodes; Superconducting device noise;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.604580
