公开(公告)号：US20160029066A1

公开(公告)日：2016-01-28

申请号：US14806164

申请日：2015-07-22

Applicant: Funai Electric Co., Ltd.

Inventor： Yoshiki Tanaka

IPC: H04N21/426 ,  H04N21/438

CPC classification number: H04N21/4263 ,  H03J1/0066 ,  H03J2200/32 ,  H04B1/006 ,  H04H40/00 ,  H04H40/18 ,  H04N5/455 ,  H04N5/50 ,  H04N21/42607 ,  H04N21/4383

Abstract: A broadcast receiver includes a processor that processes a broadcasting signal, a detector that detects a level of a signal of a first predetermined band of the broadcasting signal, and an adjuster that adjusts at least one of a characteristic and an operation of the processor based on the detected level.

Abstract translation: 广播接收机包括处理广播信号的处理器，检测广播信号的第一预定频带的信号电平的检测器以及基于以下的调整器调整处理器的特征和操作中的至少一个： 检测到的水平。

公开(公告)号：US20150147991A1

公开(公告)日：2015-05-28

申请号：US14612232

申请日：2015-02-02

Applicant: Silicon Laboratories Inc.

Inventor： Mustafa H. Koroglu ,  Yu Su

IPC: H04B1/00 ,  H04B1/16 ,  H03F3/19

CPC classification number: H04B1/005 ,  H03F1/565 ,  H03F3/19 ,  H03F3/193 ,  H03F2200/171 ,  H03F2200/294 ,  H03F2200/451 ,  H03H7/0169 ,  H03H7/09 ,  H03H7/46 ,  H03H11/1291 ,  H03H2210/025 ,  H03H2210/033 ,  H03J3/10 ,  H03J2200/32 ,  H04B1/16 ,  H04B1/1638 ,  H04B1/18

Abstract: A receiver includes a first amplifier having an input for receiving an RF signal, and an output for providing an amplified RF signal, a switch section that selectively switches the amplified RF signal onto a selected one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal. The first variable capacitor has a capacitance that varies in response to a tuning signal. The inductance leg includes a first inductor in series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter.

Abstract translation: 接收机包括具有用于接收RF信号的输入端的第一放大器和用于提供放大的RF信号的输出端，用于选择性地将放大的RF信号切换到多个节点中选定的一个节点的开关部分，以及包括 耦合到所述多个节点中的相应节点的多个滤波器。 多个滤波器的第一滤波器包括与多个节点中的相应一个节点之间的电感腿和电源电压端子并联耦合的第一可变电容器。 第一可变电容器具有响应于调谐信号而变化的电容。 电感腿包括与有效电阻串联的第一电感器，其中有效电阻具有与要由第一滤波器调谐的上截止频率相关的值。

公开(公告)号：US08159619B2

公开(公告)日：2012-04-17

申请号：US12574302

申请日：2009-10-06

Applicant: Yu-Tung Chen

Inventor： Yu-Tung Chen

IPC: H04N5/44

CPC classification number: H04N5/46 ,  H03J2200/32 ,  H04N21/42638

Abstract: A multi-standard integrated television receiver is disclosed. According to the invention, a RF tracking filter is provided to receive a RF signal and then filter out a fifth order and above harmonics and a band-pass filter is provided to further eliminate harmonics. Moreover, a double quadrature mixer is provided to remove third order harmonics. Accordingly, the quality factor requirement of the RF tracking filter and the linearity requirement of the band-pass filter are relaxed. Thus, the RF tracking filter and the band-pass filter can be fully integrated without any external components.

Abstract translation: 公开了一种多标准综合电视接收机。 根据本发明，提供RF跟踪滤波器以接收RF信号，然后滤出五阶以上谐波，并提供带通滤波器以进一步消除谐波。 此外，提供双正交混频器以去除三次谐波。 因此，放宽了RF跟踪滤波器的质量要求和带通滤波器的线性要求。 因此，RF跟踪滤波器和带通滤波器可以完全集成而无需任何外部组件。

公开(公告)号：US07852177B2

公开(公告)日：2010-12-14

申请号：US12258211

申请日：2008-10-24

Applicant: Masaki Yamamoto

Inventor： Masaki Yamamoto

IPC: H03J3/02

CPC classification number: H03J3/26 ,  H03H7/0161 ,  H03H2007/013 ,  H03H2210/012 ,  H03J3/185 ,  H03J2200/32

Abstract: In a double-tuning circuit including a primary tuning circuit having a first inductor and a first variable capacitive element connected in parallel and a secondary tuning circuit having a second inductor and a second variable capacitive element connected in parallel, a fixed part of a copper-foil pattern is connected to a connection point at which the double-tuning circuit is connected to an input terminal of a frequency mixing circuit, and a tip part of the copper-foil pattern extends to near the first inductor, whereby a trap circuit for attenuating an image frequency component is formed. A pattern is formed between a ground-side terminal of the first inductor and the ground, and a capacitor is connected between a connection point at which the first inductor is connected to one terminal of the pattern and a ground-side terminal of the second variable capacitive element.

Abstract translation: 在包括具有并联连接的第一电感器和第一可变电容元件的初级调谐电路和具有并联连接的第二电感器和第二可变电容元件的二次调谐电路的双调谐电路中，铜 - 箔片图案连接到双调谐电路连接到混频电路的输入端子的连接点，并且铜箔图案的末端部分延伸到第一电感器附近，由此形成用于衰减的陷波电路 形成图像频率分量。 在第一电感器的接地侧端子和地之间形成图案，并且电容器连接在第一电感器连接到图案的一个端子的连接点和第二变量的接地侧端子之间 电容元件

公开(公告)号：US08666350B2

公开(公告)日：2014-03-04

申请号：US12954598

申请日：2010-11-24

Applicant: Ari Vauhkonen

Inventor： Ari Vauhkonen

IPC: H04B1/10

CPC classification number: H04B1/18 ,  H03G3/3068 ,  H03H7/0115 ,  H03H7/0161 ,  H03H7/1775 ,  H03H11/245 ,  H03J2200/10 ,  H03J2200/32

Abstract: A circuit includes, an attenuator responsive to an input signal and a feedback signal, a variable gain low-noise amplifier responsive to the attenuator and to the feedback signal, a tracking filter, a frequency converter, and an RSSI responsive to the variable gain amplifier to generate an output signal to which the feedback signal is responsive. The frequency converter may be a mixer having a single-ended input and a differential output. The circuit may further include an analog baseband block responsive to the mixer to filter out high frequency signals. The tracking tuner performs bandpass filtering operation on the output signals of the variable gain low-noise amplifier.

Abstract translation: 电路包括响应于输入信号和反馈信号的衰减器，响应衰减器和反馈信号的可变增益低噪声放大器，响应于可变增益放大器的跟踪滤波器，频率转换器和RSSI 以产生响应于该反馈信号的输出信号。 变频器可以是具有单端输入和差分输出的混频器。 电路还可以包括响应于混频器的模拟基带块，以滤掉高频信号。 跟踪调谐器对可变增益低噪声放大器的输出信号执行带通滤波操作。

公开(公告)号：US08145172B2

公开(公告)日：2012-03-27

申请号：US12277866

申请日：2008-11-25

Applicant: Ramin Khoini-Poorfard ,  Alessandro Piovaccari ,  Aslamali A. Rafi ,  Mustafa H. Koroglu ,  David S. Trager

Inventor： Ramin Khoini-Poorfard ,  Alessandro Piovaccari ,  Aslamali A. Rafi ,  Mustafa H. Koroglu ,  David S. Trager

IPC: H04B1/06

CPC classification number: H03J1/0008 ,  H03J2200/10 ,  H03J2200/32

Abstract: A receiver (400) includes a tracking bandpass filter (420) and a signal processing circuit (430-480). The tracking bandpass filter (420) has a first input for receiving a radio frequency (RF) signal, and an output, and includes a first portion (731) on a semiconductor die (730), and at least one inductor (721). The at least one inductor (721) is operatively coupled to the first portion of the tracking bandpass filter (420). The signal processing circuit (430-480) has an input coupled to the output of the tracking bandpass filter (420), and an output for providing a processed signal. The semiconductor die (730) and the at least one inductor (721) are integrated into a single multi-chip module (MCM) (710).

Abstract translation: 接收器（400）包括跟踪带通滤波器（420）和信号处理电路（430-480）。 跟踪带通滤波器（420）具有用于接收射频（RF）信号的第一输入和输出，并且包括半导体管芯（730）上的第一部分（731）和至少一个电感器（721）。 至少一个电感器（721）可操作地耦合到跟踪带通滤波器（420）的第一部分。 信号处理电路（430-480）具有耦合到跟踪带通滤波器（420）的输出的输入端和用于提供处理信号的输出端。 半导体管芯（730）和至少一个电感器（721）被集成到单个多芯片模块（MCM）（710）中。

公开(公告)号：US20100085490A1

公开(公告)日：2010-04-08

申请号：US12574302

申请日：2009-10-06

Applicant: Yu-Tung CHEN

Inventor： Yu-Tung CHEN

IPC: H04N5/44

CPC classification number: H04N5/46 ,  H03J2200/32 ,  H04N21/42638

Abstract: A multi-standard integrated television receiver is disclosed. According to the invention, a RF tracking filter is provided to receive a RF signal and then filter out a fifth order and above harmonics and a band-pass filter is provided to further eliminate harmonics. Moreover, a double quadrature mixer is provided to remove third order harmonics. Accordingly, the quality factor requirement of the RF tracking filter and the linearity requirement of the band-pass filter are relaxed. Thus, the RF tracking filter and the band-pass filter can be fully integrated without any external components.

Abstract translation: 公开了一种多标准综合电视接收机。 根据本发明，提供RF跟踪滤波器以接收RF信号，然后滤出五阶以上谐波，并提供带通滤波器以进一步消除谐波。 此外，提供双正交混频器以去除三次谐波。 因此，放宽了RF跟踪滤波器的质量要求和带通滤波器的线性要求。 因此，RF跟踪滤波器和带通滤波器可以完全集成而无需任何外部元件。

公开(公告)号：US20030220088A1

公开(公告)日：2003-11-27

申请号：US10384949

申请日：2003-03-10

Inventor： Nicholas Paul Cowley ,  Mark Stephen John Mudd

IPC: H04B001/26

CPC classification number: H03J5/244 ,  H03J1/0008 ,  H03J3/08 ,  H03J2200/32

Abstract: A tuner is provided for converting any selected channel in an input band to zero intermediate frequency. The tuner input is connected to the inputs of a plurality of input stages. Each input stage comprises tracking filters having a passband which is tunable across the tuning range of the input stage, where the tuning ranges of the stages form a contiguous or overlapping set so as to provide tuning across the whole of the input band. Only one of the input stages is enabled at a time with the disabled stages being depowered. A frequency changer converts the selected channel from the enabled input stage to substantially zero intermediate frequency.

Abstract translation: 提供调谐器用于将输入频带中的所选频道转换为零中频。 调谐器输入连接到多个输入级的输入端。 每个输入级包括跟踪滤波器，其具有跨越输入级的调谐范围可调谐的通带，其中级的调谐范围形成连续或重叠的集合，以便在整个输入频带上提供调谐。 只有一个输入阶段在禁用阶段被削弱的同时启用。 变频器将所选择的通道从使能的输入级转换为基本为零的中频。

公开(公告)号：US06327464B1

公开(公告)日：2001-12-04

申请号：US09587349

申请日：2000-06-05

Applicant: Kenichi Hayasaka

Inventor： Kenichi Hayasaka

IPC: H04B110

CPC classification number: H03L7/0805 ,  H03J3/185 ,  H03J3/20 ,  H03J7/08 ,  H03J2200/32 ,  H04B1/1036 ,  H04B1/28

Abstract: A frequency converting circuit which reduces the amount of leakage of oscillating signals to the output, includes a local oscillator; a mixer for mixing the input signal with the output of the local oscillator, and a variable trap circuit connected in the output of the mixer. The local oscillator includes a PLL circuit, and a tank circuit having a coil and a varactor diode whose capacity is controlled by the PLL circuit. The variable trap circuit also includes a coil and a varactor diode, and is controlled by the PLL circuit to resonate at an output frequency of the local oscillator.

Abstract translation: 将振荡信号的泄漏量减少到输出的变频电路包括本地振荡器; 用于将输入信号与本地振荡器的输出混合的混频器，以及连接在混频器输出端的可变陷波电路。 本地振荡器包括PLL电路和具有线圈的容性电路和容量由PLL电路控制的变容二极管。 可变陷波电路还包括线圈和变容二极管，并且由PLL电路控制以在本地振荡器的输出频率处谐振。

公开(公告)号：US08428526B2

公开(公告)日：2013-04-23

申请号：US12049995

申请日：2008-03-17

Applicant: Yongtao Wang ,  Khurram Muhammad

Inventor： Yongtao Wang ,  Khurram Muhammad

IPC: H04B1/04 ,  H04K3/00

CPC classification number: H04B1/1027 ,  H03J3/08 ,  H03J2200/32

Abstract: A system and method for tuning baseband filters in wireless transceivers. A method comprises coupling a radio frequency (RF) signal generated by the wireless transmitter at an input of a wireless receiver, the RF signal having a desired frequency, measuring a magnitude of the coupled RF signal at an output of an analog-to-digital converter at an output of an analog baseband filter, wherein the magnitude is measured at the desired frequency, and adjusting a corner frequency of the analog baseband filter in response to the determining that the measured magnitude differs from a specified value.

Abstract translation: 一种用于调谐无线收发器中基带滤波器的系统和方法。 一种方法包括在无线接收机的输入处耦合由无线发射机产生的射频（RF）信号，所述RF信号具有期望的频率，在模数转换器的输出处测量耦合RF信号的幅度 转换器，其中所述幅度以期望的频率被测量，并且响应于确定所测量的幅度与指定值的不同而调整所述模拟基带滤波器的转角频率。