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    DIRECT CONVERSION RF TRANSCEIVER FOR WIRELESS COMMUNICATIONS
    92.
    发明申请
    DIRECT CONVERSION RF TRANSCEIVER FOR WIRELESS COMMUNICATIONS 有权
    直接转换射频收发器用于无线通信

    公开(公告)号：US20070201565A1

    公开(公告)日：2007-08-30

    申请号：US11743143

    申请日：2007-05-01

    Applicant: Zhongming Shi ,  Ahmadreza (Reza) Rofougaran ,  Arya Behzad

    Inventor： Zhongming Shi ,  Ahmadreza (Reza) Rofougaran ,  Arya Behzad

    IPC: H04L27/00

    CPC classification number: H03G3/3042 ,  H03J7/04 ,  H04B1/04 ,  H04B1/30 ,  H04B1/408 ,  H04B2001/0416

    Abstract: A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down converted to base band frequencies and base band signals to be up converted to wideband RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning the LO frequency with the frequency of the received RF signals, signal power measuring circuitry for measuring the signal to signal and power ratio and for adjusting frontal and rear amplification stages accordingly, and finally, filtering circuitry to filter high and low frequency interfering signals including DC offset.

    Abstract translation: 单芯片无线电收发机包括使接收的宽带RF信号下变频到基带频率和基带信号在传输之前被上转换成宽带RF信号的电路，而不需要转换到中频。 该电路包括一个低噪声放大器，自动频率控制电路，用于将LO频率与接收到的RF信号的频率对准，信号功率测量电路，用于测量信号与信号和功率比，并相应地调整正面和后置放大级;以及 最后，滤波电路对高频和低频干扰信号进行滤波，包括直流偏移。

    RADIO OSCILLATING AND RADAR SYSTEMS
    93.
    发明申请
    RADIO OSCILLATING AND RADAR SYSTEMS 有权
    无线电振荡和雷达系统

    公开(公告)号：US20070166053A1

    公开(公告)日：2007-07-19

    申请号：US11619743

    申请日：2007-01-04

    Applicant: Jungo Kondo ,  Osamu Mitomi ,  Kenji Aoki ,  Takashi Yoshino ,  Keiji Matsuhiro

    Inventor： Jungo Kondo ,  Osamu Mitomi ,  Kenji Aoki ,  Takashi Yoshino ,  Keiji Matsuhiro

    IPC: H04B10/04

    CPC classification number: H04B1/408 ,  G01S7/35 ,  G01S13/345 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9325 ,  H04B1/04 ,  H04B2001/0491 ,  H04B2210/006

    Abstract: It is provided a practical radio oscillating system for a radar system to alleviate the necessity of a reception filter of severe specification of pass band and an oscillating system and an amplifier of high performance and high reliability. The radio oscillating system has an optical modulator 2 for oscillation; a modulating means 6 for modulating a carrier wave “P” passing through the optical modulator 2 so as to superimpose sideband waves “Q” and “R” onto the carrier wave; an optical receiver 7 for oscillation to receive outgoing light “B” from the optical modulator 2 and to convert the outgoing light into an electrical signal; and a radiating means 8 for radiating radio signal “C” based on the electrical signal.

    Abstract translation: 提供了一种用于雷达系统的实用的无线电振荡系统，以减轻严格规范的通带的接收滤波器以及具有高性能和高可靠性的振荡系统和放大器的必要性。 无线电振荡系统具有用于振荡的光调制器2。 调制装置6，用于调制通过光调制器2的载波“P”，以将边带波“Q”和“R”叠加到载波上; 用于振荡以从光调制器2接收出射光“B”并将出射光转换成电信号的光接收器7; 以及用于基于电信号辐射无线电信号“C”的辐射装置8。

    Direct conversion RF transceiver for wireless communications
    94.
    发明授权
    Direct conversion RF transceiver for wireless communications 有权
    直接转换RF收发器用于无线通信

    公开(公告)号：US07212586B2

    公开(公告)日：2007-05-01

    申请号：US10052870

    申请日：2002-01-18

    Applicant: Zhongming Shi ,  Reza Rofougaran ,  Arya Reza Behzad

    Inventor： Zhongming Shi ,  Reza Rofougaran ,  Arya Reza Behzad

    IPC: H03K9/00 ,  H04L27/16

    CPC classification number: H03G3/3042 ,  H03J7/04 ,  H04B1/04 ,  H04B1/30 ,  H04B1/408 ,  H04B2001/0416

    Abstract: A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down converted to base band frequencies and base band signals to be up converted to wideband RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning the LO frequency with the frequency of the received RF signals, signal power measuring circuitry for measuring the signal to signal and power ratio and for adjusting frontal and rear amplification stages accordingly, and finally, filtering circuitry to filter high and low frequency interfering signals including DC offset.

    Abstract translation: 单芯片无线电收发机包括使接收的宽带RF信号下变频到基带频率和基带信号在传输之前被上转换成宽带RF信号的电路，而不需要转换到中频。 该电路包括一个低噪声放大器，自动频率控制电路，用于将LO频率与接收到的RF信号的频率对准，信号功率测量电路，用于测量信号与信号和功率比，并相应地调整正面和后置放大级;以及 最后，滤波电路对高频和低频干扰信号进行滤波，包括直流偏移。

    Direct conversion RF transceiver with automatic transmit power control
    95.
    发明授权
    Direct conversion RF transceiver with automatic transmit power control 有权
    直接转换RF收发器具有自动发射功率控制

    公开(公告)号：US07158762B2

    公开(公告)日：2007-01-02

    申请号：US10340419

    申请日：2003-01-10

    Applicant: Zhongming Shi ,  Ahmadreza Rofougaran ,  Arya Behzad

    Inventor： Zhongming Shi ,  Ahmadreza Rofougaran ,  Arya Behzad

    IPC: H04B1/40

    CPC classification number: H04B1/408 ,  H03G3/3042 ,  H03J7/04 ,  H04B1/04 ,  H04B1/30 ,  H04B2001/0416

    Abstract: A single chip radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning the LO frequency with the frequency of the received RF signals, received signal strength indicators for adjusting frontal and rear amplification stages accordingly, and, finally, filtering circuitry to filter high and low frequency interfering signals, including DC offset. A radio frequency (RF) variable gain amplifier (VGA) includes a power amplifier in a direct conversion radio transceiver that includes a gain determination module that reduces an input gain level to the power amplifier to adjust the output power level of the power amplifier according to temperature indications to maintain reliable operation or power level indications to maintain a constant output power level.

    Abstract translation: 单芯片无线电收发机包括使得接收的RF信号能够被下变频到基带频率的电路，并且基带信号在传输之前被上转换为RF信号，而不需要转换到中频。 该电路包括一个低噪声放大器，用于使LO频率与接收到的RF信号的频率对准的自动频率控制电路，用于相应地调节正面和后部放大级的接收信号强度指示器，以及最后滤波高低的滤波电路 频率干扰信号，包括直流偏移。 射频（RF）可变增益放大器（VGA）包括直接转换无线电收发器中的功率放大器，其包括增益确定模块，该增益确定模块将功率放大器的输入增益电平降低，以根据 温度指示维持可靠的运行或功率电平指示，以保持恒定的输出功率水平。

    E-band radio transceiver architecture and chip set
    96.
    发明授权
    E-band radio transceiver architecture and chip set 有权
    E波段无线电收发器架构和芯片组

    公开(公告)号：US07146136B2

    公开(公告)日：2006-12-05

    申请号：US10772050

    申请日：2004-02-04

    Applicant: Stephen James Consolazio

    Inventor： Stephen James Consolazio

    IPC: H04B1/28 ,  H04M1/00

    CPC classification number: H04B1/18 ,  H04B1/408

    Abstract: A GaAs E-Band transceiver front-end chip set is provided comprising three MMIC devices. The first device includes a circuit for receiving data at baseband, mixing the data with an LO signal having an E-Band frequency, and transmitting a resultant data stream at an upconverted E-Band frequency; a circuit for receiving data having an E-Band frequency, mixing the received data with an LO signal having an E-Band frequency, and downconverting the resultant mixed received signal to an IF; and a circuit for dividing a received LO signal at an E-Band frequency and communicating the LO signal to the transmission and receiver circuits. The second device comprises a circuit for receiving an LO signal at a reference frequency, and multiplying the LO signal to an E-Band frequency. The third device comprises a circuit for mixing the mixed received IF signal with an LO signal, and downconverting the resultant mixed received signal to a baseband frequency, and a circuit for generating an LO signal, communicating the LO signal to the second device, coupling the LO signal, dividing the coupled LO signal, and communicating the divided LO signal to the second downconversion circuit. The first and second devices may be manufactured by a p-HEMT process and the third device is manufactured by a MESFET process. Additionally, an E-Band communications system is provided which utilizes the aforementioned chip set.

    Abstract translation: 提供了一种GaAs E-Band收发器前端芯片组，包括三个MMIC器件。 第一装置包括用于在基带接收数据的电路，将数据与具有E波段频率的LO信号进行混合，并以上变频的E频带频率发送所得的数据流; 用于接收具有E频带频率的数据的电路，将接收到的数据与具有E频带频率的LO信号混合，并将所得到的混合接收信号下变频到IF; 以及用于将E波段频率的接收LO信号分频并将LO信号传送到发射和接收机电路的电路。 第二装置包括用于以参考频率接收LO信号并将LO信号与E频带频率相乘的电路。 第三装置包括用于将混合的接收IF信号与LO信号混合的电路，以及将所得到的混合接收信号下变频到基带频率，以及用于产生LO信号的电路，将LO信号传送到第二装置， LO信号，分频耦合LO信号，并将分频LO信号传送到第二下变频电路。 第一和第二器件可以通过p-HEMT工艺制造，并且第三器件由MESFET工艺制造。 此外，提供了利用上述芯片组的E波段通信系统。

    Single oscillator transceiver frequency plan
    97.
    发明授权
    Single oscillator transceiver frequency plan 有权

    公开(公告)号：US07116706B2

    公开(公告)日：2006-10-03

    申请号：US10233886

    申请日：2002-09-03

    Applicant: Dean Lawrence Cook ,  Kenneth V. Buer

    Inventor： Dean Lawrence Cook ,  Kenneth V. Buer

    IPC: H04B1/38

    CPC classification number: H04B1/408 ,  H04B1/403

    Abstract: A frequency plan is provided for particular use in a transceiver. Advantageously, a single oscillator may be used to generate desired frequency signals. One or more power splitters receive the signal and equally divide the signal into first and second signals having a frequency substantially equal to the original. Multipliers on each arm of the transceiver receive a signal and increase the frequency of the signal. In one exemplary embodiment, multiple signals having different frequencies may be transmitted over the same cable due in part to the generated frequency separation between the signals. In another exemplary embodiment, multiple signals may be transmitted over multiple cables. Additionally, multiple signals over one or more cables may be transmitted at or below 3 GHz.

    Half duplex radio transceiver with low IF receiver
    99.
    发明授权
    Half duplex radio transceiver with low IF receiver 失效
    具有低IF接收机的半双工无线电收发器

    公开(公告)号：US07065329B2

    公开(公告)日：2006-06-20

    申请号：US10095870

    申请日：2002-03-12

    Applicant: Christopher B. Marshall

    Inventor： Christopher B. Marshall

    IPC: H04B1/38 ,  H04B1/40 ,  H04B1/26

    CPC classification number: H04B1/408 ,  H04B1/30

    Abstract: A half duplex radio transceiver comprises a transmitter (100) and a low IF receiver (200). The difference between the transmit frequency and the receive frequency is equal to the low IF. A common frequency generator (300) is shared between the transmitter and receiver without needing to be retuned. An upconversion signal at the transmit frequency is used for down conversion in the receiver. Transceivers at opposite ends of a communication link, such as in a master/slave network, have their transmit and receive frequencies interchanged. Optionally a transceiver may be configurable to either form e.g. as either a master of a slave station. Channel sensing for Carrier Sense Multiple Access (CSMA) may be performed on the transmit frequency without retuning the receiver.

    Abstract translation: 半双工无线电收发器包括发射机（100）和低IF接收机（200）。 发射频率和接收频率之间的差值等于低IF。 公共频率发生器（300）在发射机和接收机之间共享，而不需要被重新调谐。 发射频率的上变频信号用于接收机中的下变频。 通信链路的相对端（如主/从网络）中的收发器将其发送和接收频率互换。 可选地，收发器可以被配置成例如形成。 作为奴隶站的主人。 可以在发送频率上执行用于载波侦听多路访问（CSMA）的信道感测，而不重新接收接收机。

    Miniaturized transmitter-receiver unit
    100.
    发明授权
    Miniaturized transmitter-receiver unit 失效

    公开(公告)号：US07046969B2

    公开(公告)日：2006-05-16

    申请号：US10195202

    申请日：2002-07-15

    Applicant: Shigehiro Ito ,  Yoshio Saito

    Inventor： Shigehiro Ito ,  Yoshio Saito

    IPC: H04B1/44

    CPC classification number: H04B1/408 ,  H05K1/16

    Abstract: A transmitter-receiver unit has an antenna patch and an IF circuit, between which there is a large frequency difference, on a first side of a multilayer substrate. A high frequency circuit (including a local oscillator and a demodulation unit) except for the IF circuit is provided on a second side of the multilayer substrate. A ground conductive pattern is provided in the interior of the multilayer substrate. The circuit conductive pattern exposed at the second side of the multilayer substrate and a feeding point of the antenna patch conduct to each other through a through hole.

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