A new low-power high-speed prescaler in GNSS receivers
A new prescaler based on new Source Coupled Logic(SCL) latch is proposed in this paper, supplying Local Oscillator (LO) for receivers. Compared to traditional static SCL latch, a clock-controlling transistor is added to reduce the time constant at sensing time, and as a result, the maximum operating...
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| Veröffentlicht in: | Dian zi yu xin xi xue bao = Journal of electronics & information technology 2010-07, Vol.32 (7), p.1752-1755 |
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| container_title | Dian zi yu xin xi xue bao = Journal of electronics & information technology |
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| creator | Yu, Yun-Feng Ma, Cheng-Yan Ye, Tian-Chun |
| description | A new prescaler based on new Source Coupled Logic(SCL) latch is proposed in this paper, supplying Local Oscillator (LO) for receivers. Compared to traditional static SCL latch, a clock-controlling transistor is added to reduce the time constant at sensing time, and as a result, the maximum operating frequency increases and the operating range is enlarged. A simple but to some extent accurate small signal model for this new architecture is developed, and the advantages of new design are described in detail. This prescaler's maximum operating frequency can reach to 6.9 GHz when its current is only 1.2 mA. The prescaler is manufactured in 0.18 mu m CMOS process, and it has been successfully applied to GPS receivers. |
| doi_str_mv | 10.3724/SP.J.1146.2009.00842 |
| format | Article |
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Compared to traditional static SCL latch, a clock-controlling transistor is added to reduce the time constant at sensing time, and as a result, the maximum operating frequency increases and the operating range is enlarged. A simple but to some extent accurate small signal model for this new architecture is developed, and the advantages of new design are described in detail. This prescaler's maximum operating frequency can reach to 6.9 GHz when its current is only 1.2 mA. 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| ispartof | Dian zi yu xin xi xue bao = Journal of electronics & information technology, 2010-07, Vol.32 (7), p.1752-1755 |
| issn | 1009-5896 |
| language | chi |
| recordid | cdi_proquest_miscellaneous_855716323 |
| source | Alma/SFX Local Collection |
| subjects | Electronics Geographic information systems Global Positioning System Latches Mathematical models Oscillators Prescalers Receivers Satellite navigation systems |
| title | A new low-power high-speed prescaler in GNSS receivers |
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