JPH05300044A - Command receiver - Google Patents
Command receiverInfo
- Publication number
- JPH05300044A JPH05300044A JP9812292A JP9812292A JPH05300044A JP H05300044 A JPH05300044 A JP H05300044A JP 9812292 A JP9812292 A JP 9812292A JP 9812292 A JP9812292 A JP 9812292A JP H05300044 A JPH05300044 A JP H05300044A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- converted
- high frequency
- command receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010355 oscillation Effects 0.000 claims abstract description 11
- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Superheterodyne Receivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無線受信機の周波数変
換手段に利用する。特に、衛星通信に利用するのに適す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as frequency conversion means of a radio receiver. Particularly, it is suitable for use in satellite communication.
【０００２】[0002]
【従来の技術】従来この種の受信機は、入力周波数を所
定の中間周波数に変換するように局部発振周波数が設定
されていた。そのために衛星搭載用として通常使用され
るように、２波の周波数を受信するには、図２に示すよ
うに、２台のコマンド受信機が必要になる。2. Description of the Related Art Conventionally, in this type of receiver, a local oscillation frequency is set so as to convert an input frequency into a predetermined intermediate frequency. Therefore, two command receivers are required to receive the frequencies of two waves, which are normally used for mounting on a satellite, as shown in FIG.
【０００３】[0003]
【発明が解決しようとする課題】このように従来例は、
２波の周波数を受信するのに２台の受信機を必要とする
ので、重量、容量および消費電力が大きい欠点があっ
た。As described above, the conventional example is as follows.
Since two receivers are required to receive the two frequencies, there is a drawback that the weight, capacity and power consumption are large.
【０００４】本発明は、このような欠点を除去するもの
で、２波の周波数を１台のコマンド受信機で受信できる
コマンド受信器を提供することを目的とする。The present invention eliminates such drawbacks, and an object of the present invention is to provide a command receiver which can receive two wave frequencies with a single command receiver.
【０００５】[0005]
【課題を解決するための手段】本発明は、周波数が異な
る２波の高周波信号のそれぞれに狭帯域に調整されたフ
ィルタと、所定の周波数の局部発振信号を発振する局部
発振器と、この局部発振器が発振する局部発振信号と高
周波信号とを混合して中間周波信号を生成するミクサと
を備えたコマンド受信器において、上記フィルタのそれ
ぞれを通過する高周波信号を合成し、この合成した高周
波信号を上記ミクサに与える高周波数信号合成器を備
え、上記局部発振器は、到来する２波の高周波信号のそ
れぞれの周波数のほぼ平均値に等しい局部発振信号を発
振する手段を含むことを特徴とする。DISCLOSURE OF THE INVENTION The present invention provides a filter adjusted to a narrow band for each of two high frequency signals having different frequencies, a local oscillator for oscillating a local oscillation signal of a predetermined frequency, and this local oscillator. In a command receiver equipped with a mixer for generating an intermediate frequency signal by mixing a local oscillation signal oscillating with a high frequency signal, a high frequency signal passing through each of the filters is synthesized, and the synthesized high frequency signal is It is characterized in that it comprises a high frequency signal synthesizer for supplying to the mixer, and the local oscillator includes means for oscillating a local oscillation signal which is approximately equal to an average value of respective frequencies of the two high frequency signals which arrive.
【０００６】[0006]
【作用】周波数ｆ1 の高周波信号と周波数ｆ2 の高周波
信号とを合成した高周波信号と周波数｜ｆ1 ＋ｆ2 ｜／
２の局部発振信号とを混合して周波数｜ｆ1 −ｆ2 ｜／
２の中間周波数信号を生成し、復調器に与える。[Action] frequency f 1 of the high-frequency signal and the high frequency signal and a frequency of the frequency f 2 and a high-frequency signal synthesized | f 1 + f 2 | /
The frequency | f 1 −f 2 | /
Two intermediate frequency signals are generated and provided to the demodulator.
【０００７】[0007]
【実施例】以下、本発明の一実施例について図面を参照
して説明する。図１はこの実施例の構成を示すブロック
図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of this embodiment.
【０００８】この実施例は、図１に示すように、周波数
が異なる２波の高周波信号のそれぞれに狭帯域に調整さ
れたフィルタ１および２と、所定の周波数の局部発振信
号を発振する局部発振器８と、この局部発振器８が発振
する局部発振信号と高周波信号とを混合して中間周波信
号を生成するミクサ５とを備え、さらに、本発明の特徴
とする手段として、フィルタ１および２のそれぞれを通
過する高周波信号を合成し、この合成した高周波信号を
ミクサ５に与える高周波数信号合成器３を備え、局部発
振器８は、到来する２波の高周波信号のそれぞれの周波
数のほぼ平均値に等しい局部発振信号を発振する手段を
含む。In this embodiment, as shown in FIG. 1, filters 1 and 2 each having a narrow band adjusted for each of two high frequency signals having different frequencies, and a local oscillator for oscillating a local oscillation signal having a predetermined frequency. 8 and a mixer 5 for generating an intermediate frequency signal by mixing a local oscillation signal oscillated by the local oscillator 8 and a high frequency signal. Further, as a feature of the present invention, each of the filters 1 and 2 is provided. The high-frequency signal synthesizer 3 for synthesizing the high-frequency signal passing through the mixer and giving the synthesized high-frequency signal to the mixer 5 is provided. It includes means for oscillating a local oscillator signal.
【０００９】次に、この実施例の動作を説明する。入力
端に二つの受信周波数ｆ1 およびｆ2 のそれぞれに調整
されたフィルタ１および２を配置する。入力信号は高周
波数信号合成器３および入力増幅器４を通り、ミクサ５
で周波数変換される。周波数ｆ1 を使用している場合は
局部発振器８の発振周波数（ｆ1 ＋ｆ2 ）／２により中
間周波数｜ｆ1 −ｆ2 ｜／２に変換される。また、周波
数ｆ2 を使用している場合も中間周波数｜ｆ1 −ｆ2 ｜
／２に変換される。中間周波数｜ｆ1 −ｆ2 ｜／２に変
換された信号は中間周波数増幅器６を通り、復調器７で
復調される。Next, the operation of this embodiment will be described. Placing the filter 1 and 2, which is adjusted to each of the two received frequencies f 1 and f 2 to the input end. The input signal passes through the high frequency signal synthesizer 3 and the input amplifier 4, and the mixer 5
The frequency is converted by. When the frequency f 1 is used, it is converted to an intermediate frequency | f 1 −f 2 | / 2 by the oscillation frequency (f 1 + f 2 ) / 2 of the local oscillator 8. Also, when the frequency f 2 is used, the intermediate frequency | f 1 −f 2 |
Converted to / 2. The signal converted to the intermediate frequency | f 1 −f 2 | / 2 passes through the intermediate frequency amplifier 6 and is demodulated by the demodulator 7.
【００１０】[0010]
【発明の効果】本発明は、以上説明したように、一つの
コマンド受信機で二つの受信信号を受信できるので、重
量、容量および消費電力を大幅に低減できる効果があ
る。As described above, according to the present invention, one command receiver can receive two reception signals, so that weight, capacity and power consumption can be greatly reduced.
【図１】本発明実施例の構成を示すブロック構成図。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
【図２】従来例の構成を示すブロック構成図。FIG. 2 is a block configuration diagram showing a configuration of a conventional example.
１ フィルタ ２ フィルタ ３ 高周波数信号合成器 ４ 入力増幅器 ５ ミクサ ６ 中間周波数増幅器 ７ 復調器 ８ 局部発振器 1 Filter 2 Filter 3 High Frequency Signal Synthesizer 4 Input Amplifier 5 Mixer 6 Intermediate Frequency Amplifier 7 Demodulator 8 Local Oscillator
Claims (1)
ぞれに狭帯域に調整されたフィルタと、 所定の周波数の局部発振信号を発振する局部発振器と、 この局部発振器が発振する局部発振信号と高周波信号と
を混合して中間周波信号を生成するミクサとを備えたコ
マンド受信器において、 上記フィルタのそれぞれを通過する高周波信号を合成
し、この合成した高周波信号を上記ミクサに与える高周
波数信号合成器を備え、 上記局部発振器は、到来する２波の高周波信号のそれぞ
れの周波数のほぼ平均値に等しい局部発振信号を発振す
る手段を含むことを特徴とするコマンド受信機。1. A filter adjusted to a narrow band for each of two high-frequency signals of different frequencies, a local oscillator that oscillates a local oscillation signal of a predetermined frequency, and a local oscillation signal and a high frequency that the local oscillator oscillates. A command receiver including a mixer that mixes signals with each other to generate an intermediate frequency signal. A high frequency signal synthesizer that synthesizes high frequency signals that pass through each of the filters and provides the synthesized high frequency signal to the mixer. The command receiver, wherein the local oscillator includes means for oscillating a local oscillation signal that is substantially equal to an average value of respective frequencies of two high-frequency signals that arrive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9812292A JPH05300044A (en) | 1992-04-17 | 1992-04-17 | Command receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9812292A JPH05300044A (en) | 1992-04-17 | 1992-04-17 | Command receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05300044A true JPH05300044A (en) | 1993-11-12 |
Family
ID=14211492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9812292A Pending JPH05300044A (en) | 1992-04-17 | 1992-04-17 | Command receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05300044A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002217767A (en) * | 2001-01-17 | 2002-08-02 | Sony Corp | Signal detection device |
| US6553788B1 (en) | 1999-02-23 | 2003-04-29 | Nippon Sheet Glass Co., Ltd. | Glass substrate for magnetic disk and method for manufacturing |
| WO2006070642A1 (en) * | 2004-12-28 | 2006-07-06 | Matsushita Electric Industrial Co., Ltd. | Spectrum spread receiving apparatus |
| US7398075B2 (en) | 2002-08-09 | 2008-07-08 | Casio Computer Co., Ltd. | Radio wave reception device and radio wave clock |
-
1992
- 1992-04-17 JP JP9812292A patent/JPH05300044A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6553788B1 (en) | 1999-02-23 | 2003-04-29 | Nippon Sheet Glass Co., Ltd. | Glass substrate for magnetic disk and method for manufacturing |
| US6899943B2 (en) | 1999-02-23 | 2005-05-31 | Hoya Corporation | Glass substrate for magnetic disk and method for manufacturing |
| JP2002217767A (en) * | 2001-01-17 | 2002-08-02 | Sony Corp | Signal detection device |
| US7398075B2 (en) | 2002-08-09 | 2008-07-08 | Casio Computer Co., Ltd. | Radio wave reception device and radio wave clock |
| WO2006070642A1 (en) * | 2004-12-28 | 2006-07-06 | Matsushita Electric Industrial Co., Ltd. | Spectrum spread receiving apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH09275358A (en) | Multi-band mobile radio device | |
| JPH07221667A (en) | Method for generation of signal of different frequencies in digital radiotelephone | |
| US5657344A (en) | Transmitting/receiving signal processing circuit in digital cordless telephone | |
| JPH07245568A (en) | Radio receiver | |
| JPH11103325A (en) | Radios compatible with multiple communication systems | |
| JPH06296152A (en) | Time division multiplex transmitter-receiver | |
| JPH06216802A (en) | Transceiver | |
| US6021164A (en) | Digital radio communication system having reduced phase-locked loop, and its synchronization | |
| US6721551B2 (en) | Transmitting and receiving apparatus | |
| JPH11205172A (en) | Tuner for satellite broadcasting receiver | |
| JPH04160926A (en) | Transmitter-receiver | |
| JP3680927B2 (en) | Converter for satellite broadcasting reception | |
| JP2003087133A (en) | Receiving machine | |
| JP3464653B2 (en) | Satellite signal transmission system | |
| JP3452830B2 (en) | Satellite signal transmission system and block converter | |
| JP2776080B2 (en) | Radio selective call receiver | |
| JP3385917B2 (en) | Transceiver | |
| JP2592661B2 (en) | Microwave receiver | |
| JP4064764B2 (en) | Mobile phone | |
| JP3252211B2 (en) | Superheterodyne transceiver | |
| KR960000105Y1 (en) | Frequency synthesizer in radio telephone | |
| JPH10327090A (en) | Superheterodyne transceiver | |
| JPH10322239A (en) | Superheterodyne transceiver | |
| KR970063996A (en) | Multi-channel wireless paging terminal and data transmission method | |
| JPH11205174A (en) | Receiver |