公开(公告)号：US11791810B2

公开(公告)日：2023-10-17

申请号：US17634590

申请日：2020-08-13

申请人： Nanowave Technologies Inc.

发明人： Charles William Tremlett Nicholls

IPC分类号： H03K5/1252 ,  H03D7/00 ,  H03K5/14 ,  H03D7/16 ,  H03D7/18 ,  H03B21/00 ,  H03B19/00 ,  H03B17/00

CPC分类号： H03K5/1252 ,  H03B19/00 ,  H03B21/00 ,  H03D7/00 ,  H03D7/161 ,  H03D7/18 ,  H03K5/14 ,  H03B17/00

摘要： A transposed delay line oscillator including a mode selection filter and a transposed delay line is provided. An output of the transposed delay line is coupled to an input of the mode selection filter to establish an oscillator loop. Based on the transposed delay line output, the mode selection filter generates a mode selection signal including an isolated oscillatory mode, in a Radio Frequency (RF) band. The transposed delay line receives the mode selection signal for transposition to an intermediate frequency of an intermediate frequency (IF) delay line. The IF delay line includes a delay filter and a phase noise suppression loop configured to suppress de-correlated transposition phase noise resulting from a delay of the delay filter. Suppression of phase noise in the IF delay line enables cancellation of transposition phase noise when transposing the IF delay line output to the RF band.

公开(公告)号：US20200007084A1

公开(公告)日：2020-01-02

申请号：US16421285

申请日：2019-05-23

申请人： ALi Corporation

发明人： CEDRIC LAMBERTET ,  Christian Eichrodt ,  Fabio Epifano ,  Claude-Alain Gobet ,  Alfredo Bautista ,  Jian-Xin Li

IPC分类号： H03D7/16 ,  H03D7/18 ,  H04N7/20 ,  H04H40/90

摘要： The disclosure provided a low noise block converter for converting RF signal received from a satellite into IF signal, where the image rejection of the RF signal is performed in two stages through a low noise amplifier (LNA) integrated circuit (IC). The disclosure reduced the number of discrete components by integrating electronic components onto one integrated circuit (or chip), and at the same, improves the noise figure of the LNB converter. The LNB IC comprises LNA circuits, RF path selector, and signal downconverter, where the image rejection is performed by a combination of the LNA circuits and the signal downconverter.

公开(公告)号：US10312862B2

公开(公告)日：2019-06-04

申请号：US15540682

申请日：2015-12-30

申请人： SOLiD, INC.

发明人： Jaehun Choi ,  Kyungeun Han

IPC分类号： H03D7/16 ,  H03D7/18 ,  H04B1/30

摘要： According to an embodiment of the inventive concept, an up-down converter includes a first mixer configured to convert an input radio frequency (RF) signal into an intermediate frequency (IF) signal using a first local signal; an IF filter configured to filter the IF signal converted by the first mixer; a second mixer configured to convert the IF signal, which has been filtered by the IF filter, into an output RF signal using a second local signal; and a local oscillator configured to control a frequency of the first local signal and the second local signal based on a frequency of the input RF signal.

公开(公告)号：US20170117879A1

公开(公告)日：2017-04-27

申请号：US15293255

申请日：2016-10-13

申请人： Texas Instruments Incorporated

发明人： Sudipto Chakraborty ,  Vinod Mukundagiri

IPC分类号： H03J3/02 ,  H04B1/10 ,  H04B5/00 ,  H03L7/099 ,  H03D7/18

CPC分类号： H03J3/02 ,  H03D7/165 ,  H03J1/0008 ,  H03J7/04 ,  H03J2200/10 ,  H03J2200/28 ,  H03J2200/29 ,  H03L7/0995 ,  H04B1/10 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0093

摘要： Methods and circuitry for calibrating inductive-capacitive resonant circuits are disclosed. An example of the circuitry includes an inductive-capacitive (L-C) resonant circuit operable to receive signals in response to induced electromagnetic signals transmitted on a carrier frequency. A demodulator has a signal source and is operable to demodulate signals generated by the L-C resonant circuit. Switching circuitry is operable to inject signals generated by the signal source into the L-C resonant circuit during a calibration mode. The calibration mode is for adjusting the capacitance in the L-C resonant circuit to tune the L-C resonant circuit to the carrier frequency.

公开(公告)号：US09571036B2

公开(公告)日：2017-02-14

申请号：US13496234

申请日：2012-02-07

申请人： Karl-Gösta Sahlman ,  Tomas Lieback

发明人： Karl-Gösta Sahlman ,  Tomas Lieback

IPC分类号： H04B1/10 ,  H03D7/18 ,  H04B1/06 ,  H04B1/00

CPC分类号： H03D7/18 ,  H04B1/0021 ,  H04B1/0046 ,  H04B1/06

摘要： A heterodyne receiver structure comprises a frequency conversion block arranged to convert an incoming analog radio frequency (RF) signal to an analog intermediate frequency (IF) signal; a filter block arranged to filter said analog IF signal; and an analog-to-digital (AD) converter block arranged to convert said filtered analog IF signal to a digital signal, wherein the AD converter block (309) is arranged to convert the filtered analog IF signal to the digital signal by using a sampling frequency (fs) which is at least N times a maximum bandwidth of the filtered analog IF signal, wherein the frequency spectrum from zero to the sampling frequency is divided into N frequency zones of equal width, wherein N is an even positive number higher than two; the frequency conversion block (304) is arranged to convert the incoming analog RF signal to the analog IF signal such that the analog IF signal is located in any of the N/2-1 frequency zones having lowest frequency; and the filter block (306-308) is arranged to low pass the analog IF signal such that any disturbing signal located in a zone, which would have a mirror image after the AD conversion in the zone, in which the analog IF signal is located, is filtered away, wherein the heterodyne receiver structure further comprises a digital signal processing block (311) arranged to filter said digital signal.

摘要翻译： 外差接收机结构包括频率转换块，其被布置为将输入的模拟射频（RF）信号转换为模拟中频（IF）信号; 滤波器块，布置成滤波所述模拟IF信号; 以及被配置为将所述滤波的模拟IF信号转换为数字信号的模数（AD）转换器模块，其中AD转换器模块（309）被布置成通过使用采样将滤波后的模拟IF信号转换为数字信号 频率（fs）至少为经滤波的模拟IF信号的最大带宽的N倍，其中从零到采样频率的频谱被分成相等宽度的N个频域，其中N是高于2的偶数正数 ; 变频块（304）被配置为将输入的模拟RF信号转换为模拟IF信号，使得模拟IF信号位于具有最低频率的N / 2-1频带中的任一个中; 并且滤波器块（306-308）被布置为使模拟IF信号低通，使得位于区域中的任何干扰信号将在模拟IF信号所在的区域中的AD转换之后具有镜像 被滤除，其中外差接收器结构还包括布置成滤波所述数字信号的数字信号处理块（311）。

公开(公告)号：US06963110B2

公开(公告)日：2005-11-08

申请号：US10198408

申请日：2002-07-19

申请人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

发明人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

IPC分类号： H01F17/00 ,  H01L23/50 ,  H01L23/522 ,  H01L23/60 ,  H01L23/62 ,  H01L27/02 ,  H01L27/08 ,  H03B5/12 ,  H03B5/36 ,  H03D7/16 ,  H03D7/18 ,  H03G1/00 ,  H03H11/12 ,  H03J1/00 ,  H03J3/04 ,  H03J3/08 ,  H03J3/18 ,  H03L7/10 ,  H03L7/23 ,  H04B1/28 ,  H01L29/72

CPC分类号： H01L23/50 ,  H01F17/0006 ,  H01F17/0013 ,  H01F2017/0053 ,  H01F2021/125 ,  H01L23/5227 ,  H01L23/60 ,  H01L27/0248 ,  H01L27/0251 ,  H01L27/08 ,  H01L2924/0002 ,  H01L2924/3011 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/364 ,  H03D7/161 ,  H03D7/18 ,  H03G1/0029 ,  H03H11/1291 ,  H03J1/0075 ,  H03J3/04 ,  H03J3/08 ,  H03J3/185 ,  H03J2200/10 ,  H03L7/10 ,  H03L7/23 ,  H04B1/28 ,  H01L2924/00

摘要： An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters integrated onto the substrate in conjunction with image reject mixers to provide sufficient image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. The filters utilize multi track spiral inductors. The filters are tuned using local oscillators to tune a substitute filter, and frequency scaling during filter component values to those of the filter being tuned. In conjunction with filtering, frequency planning provides additional image rejection. The advantageous choice of local oscillator signal generation methods on chip is by PLL out of band local oscillation and by direct synthesis for in band local oscillator. The VCOs in the PLLs are centered using a control circuit to center the tuning capacitance range. A differential crystal oscillator is advantageously used as a frequency reference. Differential signal transmission is advantageously used throughout the receiver. ESD protection is provided by a pad ring and ESD clamping structure that maintains signal integrity. Also provided are shunts at each pin to discharge ESD build up. The shunts utilize a gate boosting structure to provide sufficient small signal RF performance, and minimal parasitic loading.

公开(公告)号：US20050147184A1

公开(公告)日：2005-07-07

申请号：US10504742

申请日：2003-02-21

申请人： Noriaki Matsuno

发明人： Noriaki Matsuno

IPC分类号： H03D7/18 ,  H03D3/00 ,  H04B1/26 ,  H04B1/28 ,  H04L27/06

CPC分类号： H04B1/0007 ,  H03D3/007 ,  H04B1/28

摘要： A signal input into an input terminal 1 is input into mixers 2, 4, and down-converted with local signals having a phase difference of 90 degrees, respectively, whereby an I-signal and a Q-signal are obtained. An output signal from the mixer 4 is delayed 90 degrees in phase by a phase shifter 6. An adder 7 outputs a sum signal of the I-signal and the Q-signal, and a subtracter 8 outputs a subtracted signal between the I-signal and the Q-signal. The sum signal and the subtracted signal are input into band pass filters 9, 10, in which signals in undesired frequency band are cut, then converted into digital signals by AD converters 11, 12 and input into a signal processor 13. In the signal processor 13, a correlation signal of the sum signal and the subtracted signal is formed, and an image signal included in the sum signal is removed using the correlation signal and the subtracted signal.

摘要翻译： 输入到输入端子1的信号被输入到混频器2,4中，并且分别用相位差为90度的本地信号进行下变频，由此获得I信号和Q信号。 来自混频器4的输出信号由移相器6相位延迟90度。 加法器7输出I信号和Q信号的和信号，减法器8在I信号和Q信号之间输出减法信号。 和信号和减法信号被输入到带通滤波器9,10中，其中切断了不想要的频带中的信号，然后由AD转换器11,12转换成数字信号并输入信号处理器13。 在信号处理器13中，形成和信号和相减信号的相关信号，并且使用相关信号和相减信号去除包括在和信号中的图像信号。

公开(公告)号：US20050143039A1

公开(公告)日：2005-06-30

申请号：US10448740

申请日：2003-05-29

申请人： Takatsugu Kamata ,  Kimitake Utsunomiya

发明人： Takatsugu Kamata ,  Kimitake Utsunomiya

IPC分类号： H04N5/44 ,  H03D7/18 ,  H03H11/04 ,  H03H11/12 ,  H04B1/26 ,  H04B1/10 ,  H04B1/18

CPC分类号： H03H11/1291 ,  H03H11/04 ,  H03H11/1213

摘要： An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer function. The image rejection filter has two sub-circuits, wherein the first sub-circuit produces the imaginary component of the transfer function, and the second sub-circuit produces the real component of the transfer function. The first sub-circuit receives the Q signal, and the second sub-circuit receives the I signal. In one embodiment, to create the fractional transfer function, a multi-feedback looped integrator is used.

摘要翻译： 图像抑制二次滤波器是可调谐的，以过滤宽频带上的图像频率。 在一个实施例中，镜像抑制滤波器包括同相和正交相位混频器。 镜像抑制具有分数传递函数。 图像抑制滤波器具有两个子电路，其中第一子电路产生传递函数的虚分量，第二子电路产生传递函数的实部分量。 第一子电路接收Q信号，第二子电路接收I信号。 在一个实施例中，为了创建分数传递函数，使用多反馈循环积分器。

公开(公告)号：US20050143031A1

公开(公告)日：2005-06-30

申请号：US10503789

申请日：2002-01-21

申请人： Oswald Moonen ,  Peter Rutten ,  Stephanus Crijns

发明人： Oswald Moonen ,  Peter Rutten ,  Stephanus Crijns

IPC分类号： H04B1/26 ,  H03D7/18 ,  H03J3/08 ,  H04B1/30 ,  H04B1/40 ,  H04B1/18

CPC分类号： H04B1/005 ,  H03J3/08 ,  H04B1/30 ,  H04B1/406

摘要： A multi-band receiver for receiving an input signal having a frequency situated either in a first band or in a second band. The receiver comprising a mixer for combining an amplified signal having substantially the same frequency as the input signal with a periodical signal generated by a local oscillator. The mixer generates an intermediate frequency signal, the intermediate frequency signal (IF) being inputted to an IF band-pass filter. A central frequency of the band-pass filter is substantially equal to a frequency of the intermediate frequency signal. The receiver is characterized in that the central frequency of the IF band-pass filter is substantially independent of a combining mode of the amplified signal and the periodical signal, the combining mode being selected from an upper heterodyning mode and a lower heterodyning mode.

摘要翻译： 一种用于接收具有位于第一频带或第二频带中的频率的输入信号的多频带接收机。 接收机包括用于将具有与输入信号基本上相同的频率的放大信号与由本地振荡器产生的周期信号组合的混频器。 混频器产生中频信号，中频信号（IF）被输入到IF带通滤波器。 带通滤波器的中心频率基本上等于中频信号的频率。 接收器的特征在于，IF带通滤波器的中心频率基本上与放大信号和周期信号的组合模式无关，组合模式选自上外插模式和下外插模式。

公开(公告)号：US06901248B1

公开(公告)日：2005-05-31

申请号：US09658745

申请日：2000-09-11

申请人： Nicholas P Cowley

发明人： Nicholas P Cowley

IPC分类号： H04N5/44 ,  H03D7/00 ,  H03D7/18 ,  H04B1/26

CPC分类号： H03D7/18

摘要： A single conversion frequency converter comprises an image reject mixer and a local oscillator. The local oscillator comprises a variable frequency oscillator and a variable divider. The variable divider supplies to the mixer a local oscillator signal whose frequency is a sub-multiple of the frequency of the variable frequency oscillator.

摘要翻译： 单个转换频率转换器包括图像拒绝混频器和本地振荡器。 本地振荡器包括可变频率振荡器和可变分频器。 可变分频器向混频器提供频率为可变频率振荡器频率的倍数的本地振荡器信号。