Improving capability of frequency synchronizer with peak phase error detector for high rate WPAN systems

2005 ◽  
Author(s):  
Dong-Jun Cho ◽  
Mi-Jeong Kim ◽  
Hyoung-Kyu Song
Keyword(s):  
Phase Error ◽  
High Rate ◽  
Error Detector ◽  
Peak Phase

Adaptive DLL Update Scheme for Power Fluctuation Immunity Using Phase Error Detector

2021 ◽  
Author(s):  
Siman Li ◽  
Chris Eom ◽  
Jake Jung ◽  
Brian Lee ◽  
Edwin Kim ◽  
...  
Keyword(s):  
Phase Error ◽  
Power Fluctuation ◽  
Error Detector

A Novel GNSS Carrier Tracking Loop Design Based on Fuzzy Logical Control

2011 ◽  
Vol 130-134 ◽  
pp. 3451-3454 ◽  
Author(s):  
Jing Bo Zhang ◽  
Shu Fang Zhang ◽  
Qin Hu ◽  
Yi Jiang ◽  
Xiao Wen Sun
Keyword(s):  
Dynamic Performance ◽  
Phase Error ◽  
Noise Interference ◽  
Fast Tracking ◽  
Phase Jitter ◽  
Loop Design ◽  
Logical Control ◽  
Error Detector ◽  
High Dynamic ◽  
Fuzzy Logical

A differential phase error detector is inserted in the carrier loop structure for improving the dynamic performance of the loop in GNSS receiver in this paper. It is used to detect the abnormal phase jitter and amplify the adjusting increment for fast tracking. In order to avoid the differential detector amplifying noise interference in locking, fuzzy logical theory is introduced into the loop to control the amplification caused by the differential detector. Finally simulations show that the proposed design achieves high dynamic performance with effectively speeding up the tracking and widening the dynamic stress range.

Structure of Palladium Single-Crystal Films Prepared by Flash Evaporation onto (001) NaCl Substrates

1970 ◽  
Vol 28 ◽  
pp. 456-457
Author(s):  
L. E. Murr ◽  
G. Wong
Keyword(s):  
Single Crystal ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
High Rate ◽  
Flash Evaporation ◽  
Optimum Load ◽  
Single Crystal Films ◽  
Crystal Films ◽  
A Current

Palladium single-crystal films have been prepared by Matthews in ultra-high vacuum by evaporation onto (001) NaCl substrates cleaved in-situ, and maintained at ∼ 350° C. Murr has also produced large-grained and single-crystal Pd films by high-rate evaporation onto (001) NaCl air-cleaved substrates at 350°C. In the present work, very large (∼ 3cm2), continuous single-crystal films of Pd have been prepared by flash evaporation onto air-cleaved (001) NaCl substrates at temperatures at or below 250°C. Evaporation rates estimated to be ≧ 2000 Å/sec, were obtained by effectively short-circuiting 1 mil tungsten evaporation boats in a self-regulating system which maintained an optimum load current of approximately 90 amperes; corresponding to a current density through the boat of ∼ 4 × 104 amperes/cm2.

Rapid Freezing of Freeze-Etch Specimens

1980 ◽  
Vol 38 ◽  
pp. 752-755
Author(s):  
A. Elgsaeter ◽  
T. Espevik ◽  
G. Kopstad
Keyword(s):  
Low Temperature ◽  
Metal Surface ◽  
Relative Velocity ◽  
Thermal Contact ◽  
High Rate ◽  
Rapid Freezing ◽  
Temperature Decrease ◽  
Freeze Etching

The importance of a high rate of temperature decrease (“rapid freezing”) when freezing specimens for freeze-etching has long been recognized1. The two basic methods for achieving rapid freezing are: 1) dropping the specimen onto a metal surface at low temperature, 2) bringing the specimen instantaneously into thermal contact with a liquid at low temperature and subsequently maintaining a high relative velocity between the liquid and the specimen. Over the last couple of years the first method has received strong renewed interest, particularily as the result of a series of important studies by Heuser and coworkers 2,3. In this paper we will compare these two freezing methods theoretically and experimentally.

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