Abstract in simplified Chinese:本发明提供一种具弹性控制电压之相移器,其可用于所有平移RF信号相位之RF系统。根据本发明之相移器可包含当作开关组件的晶体管。于一方面,藉一正电压控制信号或一负电压控制信号,此相移器提供控制一相移器之选择。例如,包含于相移器内之晶体管的直流接地可为浮接的。晶体管的RF接地可借由频段内共振电容达成。因此,提供给晶体管的控制电压系弹性的,因为其可被连接至一正或负控制电压,或其可被连接至地,或其可从正控制电压摆动到负控制电压或反之亦然。
Abstract in simplified Chinese:一种设备包含一个射频滤波器和一介电材料,此介电材料被组态来改变射频滤波的频率响应,其中此介电材料位于此射频滤波器之周遭。此设备可以有效使用在卫星天线系统,其中此射频滤波器被组态成具有一初始的频率响应。此介电材料可被组态来把射频滤波器的频率响应从初始的频率响应到偏移到偏移后的频率响应。此介电材料可以是聚乙酰胺带(polymide tape)。用于修改非顺从的(non–compliant)印刷线路板(PWB)的方法也被提供,其中在一给予的射频输入信号下,此印刷线路板与一标准的频率响应是非顺从的,并且其中此印刷线路板包含一射频滤波器。此方法包含借着在射频滤波器附近增加一段聚乙酰胺带,以调整射频滤波器的频率响应之步骤。
Abstract in simplified Chinese:揭露一种能够操作在约五千兆赫(GHz)到约300GHz频段的超模压导线架(例如四方扁平无引脚(QFN))封装件,以及制造此QFN封装件之方法。此QFN封装件包含一电容引脚,用来适当地降低及/或抵销一或多条打线所产生的电感,其中上述打线系用来将封装件内的一集成电路(IC)芯片连接到一输入/输出(I/O)引脚。此IC芯片透过一或多条打线连接到电容引脚,然后此电容引脚再透过至少一第二打线连接到此I/O引脚。因此,在一信号从封装件传出及/或被IC芯片接收前,借此电容引脚来实质地降低及/或抵销封装件内一或多条打线所产生的电感。
Abstract:
An apparatus comprises a radio frequency filter and a dielectric material configured to alter the frequency response of the RF filter, wherein said dielectric material is located in proximity to said RF filter. The apparatus may be useful in a satellite antenna system wherein the RF filter is configured to have an initial frequency response. The dielectric material may be configured to shift the frequency response of the RF filter from the initial frequency response to a shifted frequency response. The dielectric material may be a polyimide tape. A method is also provided for reworking a non-compliant PWB, wherein the PWB is non-compliant with a standard frequency response to a given RF input signal, and wherein the PWB comprises an RF filter. The method comprises the step of adjusting the frequency response of the RF filter by adding a piece of polyimide tape in proximity to the RF filter.
Abstract:
In general, the present invention provides an RF signal amplification system having an improved layout. The size of the MMIC can be reduced without loss of functionality and/or additional functionality can be added to the MMIC without increasing the size of the MMIC. The MMIC is configured with an off-chip bias feed system. The MMIC is configured with landing zones (560) for receiving a bond wire (502) such that on-chip bias circuitry can be reduced and/or eliminated.
Abstract:
In general, the present invention provides an RF signal amplification system having an improved layout. The size of the NMIC can be reduced without loss of functionality and/or additional functionality can be added to the MMIC without increasing the size of the NMIC. The MMIC is configured with an off-chip bias feed system. The MMIC is configured with landing zones for receiving a bond wire such that on-chip bias circuitry can be reduced and/or eliminated.
Abstract:
An uplink power control system and method of the present invention includes a current sensing (332) technique for predicting the P1dB power compression point (Fig. 5). A DC current sensor (332) detets the level of DC current transmitted from a control unit to an antenna unit of the system. The current measurements are analyzed to generate a theoretical prediction of amplifier linearity as the power levels are increased. The change in DC current indicates an inflection point (404) where the amplifier no longer behaves linearly to an increase in RF power. The inflection point is found by determining the various derivatives of the DC current curve. Analyzing the derivatives not only provides an accurate and consistent assessment of the P1dB compression point, but also provides a prediction of the output power, and thus future performance of the system.