Title :
Frequency stabilizing method using PSCL (phase slip-controlled loop)
Author :
Yamashita, K. ; Notsu, Y. ; Kirimura, M.
Author_Institution :
Japan Radio Co. Ltd., Tokyo, Japan
Abstract :
A novel frequency stabilizing method using PSCL (phase-slip-controlled loop) is presented for controlling the radio frequencies of cellular mobile radio units. In this method, two newly developed ICs, a crystal oscillator IC with a heat sensor and a control IC for the PSCL, are used. Experiments show that the radio frequency can be stabilized within ±0.3 ppm, while conventional crystal oscillators have a frequency stability of approx. 10 ppm in a range of -30°C to 90°C
Keywords :
cellular radio; frequency control; frequency stability; -30 to 90 degC; cellular mobile radio; control IC; crystal oscillator IC; frequency control; frequency stabilizing method; heat sensor; phase slip-controlled loop; temperature compensated crystal oscillator; Channel spacing; Frequency conversion; Land mobile radio; Oscillators; Phase control; Phase detection; Phase frequency detector; Radio frequency; Radiofrequency integrated circuits; Stability;
Conference_Titel :
Vehicular Technology Conference, 1989, IEEE 39th
Conference_Location :
San Francisco, CA
DOI :
10.1109/VETEC.1989.40077
