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    • 4. 发明授权
    • Time-slot partitioning in a TDMA system
    • TDMA系统中的时隙划分
    • US07362734B1
    • 2008-04-22
    • US09980287
    • 2000-03-14
    • Konstantinos SamarasLouis Gwyn SamuelJian Jun WuRan-Hong Yan
    • Konstantinos SamarasLouis Gwyn SamuelJian Jun WuRan-Hong Yan
    • H04J3/00
    • H04B7/2643H04W72/0446
    • According to the present invention there is provided a method of transmitting user data in a TDMA system in which the number of channels is increased by partitioning at least one time-slot in a TDMA frame into at least two sub-time-slots. Each sub time-slot may be allocated to a different user. User data may be transmitted in each time slot in a burst structure, user data being transmitted in each sub time-slot in a corresponding burst structure. User data may be transmitted in each time slot in a burst structure having n bits and wherein each time slot is partitioned into m sub time slots, user data being transmitted in each sub time-slot in a corresponding burst structure having n/m bits.
    • 根据本发明,提供了一种在TDMA系统中发送用户数据的方法,其中通过将TDMA帧中的至少一个时隙划分成至少两个子时隙来增加信道数量。 每个子时隙可以被分配给不同的用户。 可以在突发结构中的每个时隙中发送用户数据,在相应的突发结构中的每个子时隙中发送用户数据。 可以在具有n位的突发结构中的每个时隙中发送用户数据,并且其中每个时隙被划分为m个子时隙,在具有n / m位的相应突发结构中的每个子时隙中发送用户数据。
    • 5. 发明授权
    • Frequency stable resonator with temperature compensating layers
    • 具有温度补偿层的频率稳定谐振器
    • US06580933B2
    • 2003-06-17
    • US09825030
    • 2001-04-03
    • Farhat AbbasRan-Hong Yan
    • Farhat AbbasRan-Hong Yan
    • H01P708
    • H01P7/10Y10S505/70Y10S505/866
    • A resonator for rf frequencies, especially microwave, in telecommunications systems, with an extremely stable resonant frequency over a desired operating temperature range, of predetermined width (Y) and thickness (X) and having a predetermined length (Z) in the direction of propagation for achieving a desired resonance, comprises a dielectric substrate of rutile, and first and second temperature compensating layers of sapphire on two opposite faces of the substrate and extending along the length of the substrate, these sapphire layers having a predetermined thickness, and first and second superconducting layers formed on the outer surfaces of the temperature compensating layers. The dielectric constant of rutile has an opposite temperature dependence to that of sapphire, and the thicknesses of the temperature compensating layers are selected such that the frequency of resonance of the resonator is maintained within a predetermined range over a predetermined temperature range, for example 1 part in 1015 over a temperature range of 1 mK0.
    • 在电信系统中用于频率特别是微波的谐振器,在预定宽度(Y)和厚度(X)的期望工作温度范围内具有非常稳定的谐振频率并且在传播方向上具有预定长度(Z) 为了实现期望的共振,包括金红石的电介质基底和在基底的两个相对面上的蓝宝石的第一和第二温度补偿层,并且沿着基底的长度延伸,这些蓝宝石层具有预定的厚度,第一和第二 形成在温度补偿层的外表面上的超导层。 金红石的介电常数与蓝宝石的温度依赖性相反,并且选择温度补偿层的厚度,使得共振器的谐振频率在预定温度范围内保持在预定范围内,例如1分 在1015℃,温度范围为1 mK0。