子分类：
- H04B1/0003： .{软件定义的无线[SDR}系统,即系统里通常由硬件来实现的部件如滤波器或调制/解调器等,由软件来实现,例如,包括模数或数模转换这样的阶段,其中该阶段中至少部分信号处理是在数字域完成的(数字基带系统入H04L25/00; 数字调制/解调入H04L27/00;CDMA入H04B1/707;TDMA入 H04B7/2643; 图像传输入 H04N5/00) ]
- H04B1/005： .{使无线接收机、发射机和收发信机工作在两个或多个频带(即频率范围)上}
- H04B1/02： .发身机(用于生命体的无线电药丸中的组件电路的空间设备入A61B 5/07)
- H04B1/06： .接收机(放大控制入H03G;电视接收机入H04N5/44,H04N5/64)
- H04B1/38： .收发两用机,即发射机和接收机形成一个结构整体,并且其中至少有一部分用作发射和接收功能的装置
- H04B1/59： .应答器;发射机应答机(中继系统入H04B7/14)
- H04B1/60： .无人中继器的监视
- H04B1/62： .在发射机中提供预畸变信号,并在接收机中作相应的纠正,例如用以提高信噪比{(用于光发射机的入H04B10/155L)}
- H04B1/66： .用于减少信号带宽(在图象通信系统中的入H04N);用于提高传输效率(H04B 1/68优先;声码器入42T2B, G10L)
- H04B1/68： .用于全部或部分抑制载波或一个边带{或者借助使用特殊调制方法的 (调制电路入 H03C1/52, H03C1/60; 单边带接收机入 H04B1/302; 用于数据传输的入 H04L27/02)}
- H04B1/69： .扩频技术
- H04B1/72： .模拟天线(例如假天线)用的电路或部件(有耗波导终端器的入H01P1/26)
- H04B1/74： .用于增加可靠性,例如采用冗余或备用通道或设备{(用放大器备用设备的替换入 H03F1/52, H03F1/542)}
- H04B1/76： .控制传输或均衡用的导频发射机或接收机
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 261 | Satellite cellular dual-mode mobile phone antenna system | JP52625197 | 1997-01-15 | JP2000503497A | 2000-03-21 | ハッサン，アマー; ヘイズ，ジェラード，ジェームズ; マー，ヤーウェイ; マクドナルド，ジェームズ，ディ．，ジュニア．; レインホールド，スタンレイ，エル． |
| (57)【要約】 主ハウジング、主ハウジングの内部に配置され、セルラーモードで携帯電話機を動作させる回路、主ハウジングの内部に配置され、衛星モードで携帯電話機を動作させる回路、セルラー回路に結合され、セルラーモードの信号を受信しかつ送信する第１のアンテナ、および衛星回路に結合され衛星モードの信号を受信しかつ送信する第２のアンテナを含むものとして、セルラーモードおよび衛星モードの通信で動作可能な携帯電話機が開示されている。 第２のアンテナは、携帯電話機の主ハウジングに搭載されてもよいし、主ハウジングに結合されるフリップカバーの内部に収容されてもよい。 フリップカバーが用意された場合、フリップカバーは、第１の軸の周りと、第１の軸と実質的に垂直な第２の軸の周りとを回転できるように、主ハウジングに結合される。 第１のアンテナは、主ハウジングから伸びてもよく、フリップカバーの表面に印刷されてもよく、第２のアンテナの近くのフリップカバーの内部に収容されてもよい。 | ||||||
| 262 | Receiver | JP13742497 | 1997-05-13 | JPH10313260A | 1998-11-24 | OTA GENICHIRO; IGAI KAZUNORI; SUDO HIROAKI; SASAKI FUJIO |
| PROBLEM TO BE SOLVED: To compensate an aperture effect caused by sampling in the receiver of a system where a reception signal is made discrete by sampling and a channel filter is configured with a discrete signal processing arithmetic operation. SOLUTION: A receiver circuit of the receiver is made up of a 1st filter (band-pass filter) 2 that eliminates a signal other than a frequency band given to an object communication system, an orthogohal detection/channel filter section 4 consisting of a sample-and-hold circuit 5, of a Hilbert converter 6, of 1st to Nth channel filters 7-9, and of a clock shaping/control section 15, an I signal root Nyquist filter 20, a Q signal root Nyquist filter 21 and a signal detection/demodulation section 25. Then the aperture effect due to sampling is compensated by adopting a characteristic opposite to the aperture characteristic by sampling for the band-pass filter 2. COPYRIGHT: (C)1998,JPO | ||||||
| 263 | Wideband frequency signal digitizer and method | JP52098196 | 1995-11-22 | JPH09510074A | 1997-10-07 | エルダー，ロバート・シー |
| (57)【要約】 広帯域周波数信号デジタイザおよび広帯域周波数信号の複数のバンドをデジタル化する方法を提供する。 このデジタイザおよび方法は、アナログ／デジタル・コンバータのナイキスト・バンド内に、広帯域周波数信号のセグメント（４０２）を最適に配置する。 広帯域周波数信号の残りのセグメント（４０２）は、第１セグメントに対して密に配置され、そのため広帯域周波数信号全体（４００）は、一つまたは複数のアナログ／デジタル・コンバータを利用して容易にデジタル化され、しかも望ましくないスプリアス信号を低減または除去する。 | ||||||
| 264 | Receiver, signal demodulating method, antenna system, reception system and antenna direction control method | JP9925395 | 1995-04-25 | JPH08293720A | 1996-11-05 | MITA HIROYUKI; KAJIWARA TADASHI; IDO TOSHIICHI |
| PURPOSE: To unnecessitate the direction control of a paraboloidal antenna corresponding to different satellites. CONSTITUTION: A control part 93 detects the direction of the parabolic antenna corresponding to the satellite from a bit error code outputted from a digital signal processing part 92. The control part 93 outputs a pulse signal corresponding to this detected result. Corresponding to the pulse signal supplied from the control part 93, a pulse modulation part 95 modulates the carrier of the frequency of 48kHz supplied from the digital signal processing part 92. This modulated signal is supplied through an IF cable 55 to a converter 52 of the paraboloidal antenna. At the converter 52, the modulated signal is separated by a band-pass filter 82 and this is detected by a detection circuit 83. Corresponding to the detected result, a drive circuit 84 drives an LED 54. The ON/OFF cycle of the LED 54 is changed corresponding to the direction of the paraboloidal antenna toward the satellite. COPYRIGHT: (C)1996,JPO | ||||||
| 265 | Method and device for digital radio reception | JP29845093 | 1993-11-29 | JPH07154441A | 1995-06-16 | NAKATANI KAZUYOSHI; TABATA YOSHIYUKI |
| PURPOSE: To reduce the power consumption as much as possible while securing the sound quality. CONSTITUTION: An error rate calculating part 11 calculates the bit error rate of digital demodulation data. A sampling rate selecting part 12 selects the sampling rate so that the sampling rate is raised in the case of >10 -2 of bit error rate and is reduced in the case of <10 -3 of bit error rate. A sampling rate variable delay detector 3 performs digital demodulation of the DQPSK system with the selected sampling rate. Consequently, a required sound quality is secured because the error rate is kept within a prescribed range. Since the sampling rate is not raised more than necessary, the power consumption is reduced, and the consumption of a battery is suppressed. COPYRIGHT: (C)1995,JPO | ||||||
| 266 | Controller of audio visual equipment | JP17170890 | 1990-06-29 | JPH0460498A | 1992-02-26 | YAMAMOTO YASUYUKI; OSAKABE YOSHIO |
| PURPOSE:To enable simple and comprehensive operation control by providing an operation control means of an audio visual (AV) equipment which is selected through responding to demand signal from an input means of time that is input to a timer, a selection measures, a setting means, the timer and the like. CONSTITUTION:A controller 1 of which main constituent is a microcomputer 3, controls operation of an AV equipment system 50 via a bus interface 10 and a bus line which is shown as a bold line, following operation signal which is input from a remote control unit 100 via a light receiving part 7, and process procedures stored in a ROM 5. An equipment system 50 has an AV selector 50A by which signal to be output from a TV tuner 50a and so on, is selected and switched and thereafter is input to a TV monitor 13. While, at the selector 50A, output signal of the tuner 50a and so on is made to be able to be input to a VTR-A and the like, at an audio amplifier selector 50B, output signal of an audio tuner 50f and so on is made to be able to be input to a compact cassette recorder 50g and the like, as well as is made to be able to be dubbed between the recorder 50g and a digital audio tape recorder 50h. | ||||||
| 267 | JPS617779B2 - | JP4669178 | 1978-04-21 | JPS617779B2 | 1986-03-08 | MURASHITA HIDEYO |
| 268 | JPS6046898B2 - | JP5272278 | 1978-05-04 | JPS6046898B2 | 1985-10-18 | TOOYAMA EIJI |
| 269 | Interpolation receiving devices at voice short break time | JP4669178 | 1978-04-21 | JPS54139417A | 1979-10-29 | MURASHITA HIDEYO |
| PURPOSE: To delete the noise at the short break time by securing restoration of the aural signal through interpolation of the signals at the short break time based on the memory contents which is memorized in delay within the receiving device and also based on the reception signals at the time of non-short break time each. CONSTITUTION: In the communication of the aural signals, the input signals supplied from input terminal 1 are supplied to amplification demodulator circuit 4 as well as to short break detection circuit 5, and demodulation signal X of circuit 4 is delivered to delay memory circuit 6 and switch 9 each. Both the short break time and the short break restoration time of the input signal are detected via circuit 5, and also detection signal Z is applied to interpolation circuit 8 and switch 9. At the same time, signal T from circuit 4 and 8 is supplied to memory circuit 6, and the output is delivered to pitch cycle detector circuit 7 and circuit 8. And the pitch cycle or non-cycle are detected through circuit 7, and information V is delivered to circuit 8. Thus, signal Y interpolated at the short break time is supplied to switch 9 through circuit 8 and via information V from circuit 7 plus the memory signal from circuit 6. COPYRIGHT: (C)1979,JPO&Japio | ||||||
| 270 | Digital data coupler | JP4417877 | 1977-04-19 | JPS52136539A | 1977-11-15 | CHIYAARUZU RUUFUASU UESUNAA |
| 271 | Amplitude phase modulation communication system | JP1631976 | 1976-02-16 | JPS52109811A | 1977-09-14 | HORIKAWA IZUMI; SAITOU YOUICHI |
| PURPOSE:To make simple for the constitution of modulation and demodulating unit, by using 4 notation system differential conversion logic circuit, in phase modulating system arranging the signal in lattice shape. | ||||||
| 272 | Transmission circuit | JP12227575 | 1975-10-09 | JPS5246710A | 1977-04-13 | OOSAWA MITSUO |
| PURPOSE: The demodulation circuit of both FM and stereo of AM/FM stereo radio receiver, etc. are made altogether into monolithic large-scale IC chip. So that there is no need to create a fixed current voltage again. COPYRIGHT: (C)1977,JPO&Japio | ||||||
| 273 | FRONT END MODULE AND COMMUNICATION APPARATUS | US16237797 | 2019-01-02 | US20190140670A1 | 2019-05-09 | Kunitoshi HANAOKA |
| A front end module that performs a CA method includes a signal path through which a signal of a first frequency band propagates, a signal path through which a signal of a second frequency band propagates, a switch module that includes antenna terminals and selection terminals and is connected to antenna elements, and a balun that is disposed at the signal path. First and second balanced terminals of the balun are connected to the selection terminals, and the balun causes a fundamental wave or harmonic of a transmission signal of the first frequency band input through an unbalanced terminal to branch into branch signals having opposite phases and outputs the branch signals to the first balanced terminal and the second balanced terminal. | ||||||
| 274 | Apparatus For Converting Broad Band Electromagnetic Energy To Narrow Band Electromagnetic Energy | US15668203 | 2017-08-03 | US20190044552A1 | 2019-02-07 | James F. Brown |
| An apparatus and method are provided for converting broad spectrum electromagnetic energy to useful, narrow bands of electromagnetic energy. The broad spectrum electromagnetic energy may be from the Sun or from combustion, and output from the apparatus may be bands of visible light, infrared, microwaves, or a combination thereof. The apparatus can function as part of a highly efficient plant growing system or may function as part of a heating or warming system. | ||||||
| 275 | FRONT-END CIRCUIT AND HIGH-FREQUENCY MODULE | US16144421 | 2018-09-27 | US20190029109A1 | 2019-01-24 | Takanori UEJIMA |
| A front-end circuit includes an insulating substrate, a power amplifier, a receiver circuit device, and a shielding conductor. The power amplifier and the receiver circuit device are mounted on a top surface of the insulating substrate. The shielding conductor covers a part of the insulating substrate at the top surface side. A transmitter circuit region (Retx) where the power amplifier is mounted is arranged closer to a first side surface side than a second side surface. A receiver circuit region (Rerx) where the receiver circuit device is mounted is arranged between the transmitter circuit region (Retx) and the second side surface. The shielding conductor includes a top surface side conductor covering the transmitter circuit region (Retx) and a first side surface side conductor covering the first side surface side of the transmitter circuit region (Retx). | ||||||
| 276 | AUTOMATIC TELEMETRY BAND SELECTION | US16128623 | 2018-09-12 | US20190010804A1 | 2019-01-10 | Matias Francisco Hernandez; Sandra Reyes |
| A method for automatically selecting a frequency band for transmission of a telemetry signal includes transforming acquired measurements from a time domain to a frequency domain to obtain a spectrum of measurements. The spectrum of measurements is processed to compute a total energy in band and a standard deviation of the power spectral density in band for a plurality of frequency bands. A ratio of the total energy in band to the standard deviation acquiring a plurality of measurements of transmitted telemetry signals and of the power spectral density in band is computed for at least two of the plurality of frequency bands. The frequency band having the highest computed ratio is selected and automatically downlinked to a downhole transmitter. | ||||||
| 277 | Electronic device including waterproof structure | US15633667 | 2017-06-26 | US10134540B2 | 2018-11-20 | Jong-Min Choi; Daehyeong Park; Young-Sik Choi; Byoung-Uk Yoon |
| An electronic device including a waterproof structure is provided. The electronic device includes a housing, a window arranged in at least a part of the housing, a display module arranged in a rear surface of the window, a heat radiating member arranged in a rear surface of the display module, a polymer member arranged between a first surface of the heat radiating member and the rear surface of the display module, and a conductive member arranged in a second surface of the heat radiating member facing the first surface of the heat radiating member. A waterproof structure for the heat radiating member may be configured using at least one of the polymer member or the conductive member. | ||||||
| 278 | RADIO FREQUENCY FRONT END, TERMINAL DEVICE, AND CARRIER AGGREGATION METHOD | US15770969 | 2016-04-29 | US20180331716A1 | 2018-11-15 | Heping ZHANG; Jian CHEN; Guangsheng PAN; Dingjie WANG; Hugen QIN |
| Example radio frequency front ends, terminal devices, and carrier aggregation methods are provided. In one example, the radio frequency front end includes: P transmit branches, each transmit branch includes at least one transmit filter, N receive branches, where each receive branch includes at least one receive filter, and a switch circuit having L input ports and at least one output port, where the at least one output port is connected to an antenna or a back end circuit of an antenna, and where the L input ports are used to simultaneously connect a transmit branch of the P transmit branches and a receive branch of the N receive branches, where the transmit branch and the receive branch are corresponding to a same frequency band. | ||||||
| 279 | RADIO FREQUENCY FRONT-END CIRCUIT AND COMMUNICATION DEVICE | US16044679 | 2018-07-25 | US20180331703A1 | 2018-11-15 | Atsushi Horita; Hirotsugu Mori |
| A radio frequency front-end circuit performs, in a communication band made up of a plurality of communication channels within a particular frequency band used in a system, wireless communication through a use channel selected from among empty communication channels in the plurality of communication channels, the radio frequency front-end circuit including a transmission-side amplifier circuit and a transmission circuit both serving as a transmission-side circuit that produces, from a transmitted signal after being subjected to a predistortion process, a transmitted signal corresponding to the use channel, and a frequency variable filter serving as a tunable filter that attenuates a radio frequency signal of a spurious wave at least in an alternate adjacent channel relative to the use channel. | ||||||
| 280 | HIGH-FREQUENCY MODULE | US16043190 | 2018-07-24 | US20180331434A1 | 2018-11-15 | Masaki IIDUKA |
| A high-frequency module includes a first switch circuit including a first common terminal, a second common terminal, and selection terminals, and selectively connecting the first common terminal and the second common terminal to selection terminals different from each other among the plurality of selection terminals, and a matching circuit to be connected to the second common terminal without being connected to an antenna. | ||||||
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