Apparatus and method for protecting a communication device operating in
an undesirable environment
    2.
    发明授权
    Apparatus and method for protecting a communication device operating in an undesirable environment 失效
    用于保护在不期望的环境中操作的通信设备的装置和方法

    公开(公告)号:US6018514A

    公开(公告)日:2000-01-25

    申请号:US106401

    申请日:1998-06-29

    IPC分类号: H03J7/18 H04B7/005 H04L1/00

    CPC分类号: H03J7/18 H04W52/36 H04W52/52

    摘要: A desirable operating condition is maintained in a communication device (100) that is operating in an undesirable environment by reducing the number of radio frequency signals being amplified and subsequently transmitted by the communication device (100). The remaining radio frequency signals transmitted will be transmitted at full power, so that coverage area is maintained in a tradeoff for reduced capacity.

    摘要翻译: 通过减少由通信装置(100)放大并随后发送的射频信号的数量,在不期望的环境中操作的通信装置(100)中维持期望的操作条件。 发送的剩余射频信号将以全功率发送,从而保持覆盖区域的权衡以降低容量。

    Unbalanced saw filter
    4.
    发明授权
    Unbalanced saw filter 失效
    不平衡锯式过滤器

    公开(公告)号:US5093638A

    公开(公告)日:1992-03-03

    申请号:US608866

    申请日:1990-11-05

    IPC分类号: H03H9/64

    CPC分类号: H03H9/009

    摘要: An unbalanced surface acoustic wave (SAW) resonator-filter is achieved by using a predetermined length of unbalanced transmission line to define a ground potential and permit two SAW resonators and such transmission line to function together as an unbalanced filter.

    摘要翻译: 通过使用预定长度的不平衡传输线来限定地电位并允许两个SAW谐振器和这种传输线一起作为不平衡滤波器来实现不平衡声表面波(SAW)谐振器滤波器。

    Broadband RF transformer
    5.
    发明授权
    Broadband RF transformer 失效
    宽带射频变压器

    公开(公告)号:US5015972A

    公开(公告)日:1991-05-14

    申请号:US395240

    申请日:1989-08-17

    IPC分类号: H03H7/38

    CPC分类号: H03H7/38

    摘要: A broadband RF transformer design is described that facilitates the construction of a broadband impedance transformer in a compact, planar format, while retaining ease of assembly and manufacture. Broadband operation is achieved through the use of a slotted low-impedance winding structure, common-manufacture ferrite elements, and the optional placement of reactive elements between winding turns. By virtue of construction, thermal performance is enhanced, allowing operation at power levels not previously possible. The invention accommodates functional tuning via laser or abrading techniques. Also, the winding configuration eliminates the need to access the center of a spiral for the purposes of establishing a ground connection.

    摘要翻译: 描述了宽带RF变压器设计,其便于以紧凑的平面格式构造宽带阻抗变压器,同时保持组装和制造的容易性。 通过使用开槽的低阻抗绕组结构,共同制造的铁素体元件以及在绕组匝之间可选地布置无功元件来实现宽带操作。 凭借结构,热性能得到提高,允许以前的功率水平运行。 本发明通过激光或研磨技术适应功能调谐。 此外,为了建立接地连接的目的,绕组配置消除了进入螺旋中心的需要。

    RF power device with on-chip digital control and optical interface
    6.
    发明授权
    RF power device with on-chip digital control and optical interface 有权
    射频功率器件具有片上数字控制和光接口

    公开(公告)号:US07113761B2

    公开(公告)日:2006-09-26

    申请号:US10680836

    申请日:2003-10-07

    IPC分类号: H04B1/28

    CPC分类号: H04B10/801

    摘要: RF power device module (500) having an RF power device chip (206) which integrates an RF power device (208) with at least one of DC detector circuits (201, 202), RF detector circuits (203, 204), and thermal detector circuit (235) which cooperate with optical emitter/detector components (213) that supports a bi-directional optical link (210) made through free space with diagnostic processing and control circuits implemented on a separate chip (214) mounted within the same enclosure (205). The bi-directional optical link (210) enables interpretation of detection signals (227) received from the RF power device chip (206) and the feed back of default or other management and control signals (229) sent back to the RF power device chip (206) in response to the detected and analyzed conditions. The RF power device module (500) can be used in RF power transistors, such used in a base station, or mobile or portable transmitters, used in telecommunications, or in RF power amplifiers and instrumentation amplifiers in general.

    摘要翻译: RF功率器件模块(500)具有RF功率器件芯片(206),其将RF功率器件(208)与DC检测器电路(201,202),RF检测器电路(203,204)和热 检测器电路(235),其与支持通过自由空间制成的双向光学链路(210)的光发射器/检测器部件(213)配合,诊断处理和控制电路实现在安装在同一外壳内的单独芯片(214)上 (205)。 双向光链路(210)使得能够解释从RF功率器件芯片(206)接收的检测信号(227)以及发送回RF功率器件芯片的默认或其他管理和控制信号(229)的反馈 (206)响应于检测和分析的条件。 RF功率器件模块(500)可用于RF功率晶体管,例如在通信中使用的基站或移动或便携式发射机中,或通常用于RF功率放大器和仪表放大器中。