JPH10224269A - Highly reliable radio receiver - Google Patents
Highly reliable radio receiverInfo
- Publication number
- JPH10224269A JPH10224269A JP2683797A JP2683797A JPH10224269A JP H10224269 A JPH10224269 A JP H10224269A JP 2683797 A JP2683797 A JP 2683797A JP 2683797 A JP2683797 A JP 2683797A JP H10224269 A JPH10224269 A JP H10224269A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- reception
- level
- noise amplifier
- pilot signal
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 239000002887 superconductor Substances 0.000 claims description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 10
- 238000000926 separation method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、例えば移動通信や
衛星通信等の基地局受信装置に適用され、高周波受信部
を冷却して、所望の信号を受信する高信頼無線受信機に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-reliability wireless receiver which is applied to, for example, a base station receiving apparatus for mobile communication and satellite communication and cools a high-frequency receiving section to receive a desired signal.
【0002】[0002]
【従来の技術】従来の高信頼無線受信機の基本構成を図
10に示す。この従来の高信頼無線受信機は、アンテナ
1と、アンテナ1で受信された信号を伝送するためのア
ンテナフィーダ2と、アンテナ2の出力を切り替える第
1切替手段(SW)3と、第1SW3の一方に接続され
た、所望の帯域の信号を選択する第1受信帯域フィルタ
(RXF)4と、第1RXF4の出力を所望のレベルま
で低雑音で増幅する第1受信低雑音増幅器(RA)5
と、第1RA5の出力信号が一方の入力端に入力される
第2切替手段(SW)6と、第2SW6により出力され
る信号を出力するための出力端子7とを備えている。第
2SW6の端子のうち、出力端子7と接続されていない
端子は終端器8及び9で終端されている。2. Description of the Related Art FIG. 10 shows a basic configuration of a conventional highly reliable radio receiver. This conventional high-reliability wireless receiver includes an antenna 1, an antenna feeder 2 for transmitting a signal received by the antenna 1, a first switching unit (SW) 3 for switching an output of the antenna 2, and a first SW3. A first reception bandpass filter (RXF) 4 for selecting a signal in a desired band, and a first reception low noise amplifier (RA) 5 for amplifying the output of the first RXF4 to a desired level with low noise, connected to one side.
And a second switching means (SW) 6 to which an output signal of the first RA 5 is inputted to one input terminal, and an output terminal 7 for outputting a signal outputted by the second SW 6. Of the terminals of the second SW 6, terminals that are not connected to the output terminal 7 are terminated by terminators 8 and 9.
【0003】第1RXF4及び第1RA5は、熱遮蔽函
10に封入され、外部と断熱されるとともに、冷却手段
11により冷却される。さらに、第1RA5に電力を供
給するための第1の電源端子12と冷却手段11に電力
を供給するための第2の電源端子13がそれぞれ設けら
れる。ここで図示していないが、第1RXF4と第1R
A5との間で整合をとるために、両者の間にアイソレー
タを設ける場合もある。[0003] The first RXF 4 and the first RA 5 are sealed in a heat shield box 10, insulated from the outside, and cooled by cooling means 11. Further, a first power supply terminal 12 for supplying power to the first RA 5 and a second power supply terminal 13 for supplying power to the cooling means 11 are provided. Although not shown here, the first RXF 4 and the first R
An isolator may be provided between A5 and A5 in order to achieve matching.
【0004】また、第1SW3のもう一方の端子に接続
された、第2受信帯域フィルタ(RXF)14と、第2
RXF14の出力信号を所望のレベルまで増幅する第2
受信低雑音増幅器(RA)15が設けられ、第2RA1
5の出力信号は第2SW6のもう一方の入力端子に入力
される。ここで、第2RXF14及び第2RA15の周
波数帯域は、第1RXF4及び第1RA5のそれらと同
一である。第2RA15には第3電源端子16を通して
電力が供給され、第1SW3及び第2SW6は制御端子
17を通して入力される制御信号により実線または点線
の位置に同時に切り替えられる。通常は第1SW3及び
第2SW6とも実線のように接続される。また、上記の
第1SW3,熱遮蔽函10,冷却手段11,第2SW
6,第2RXF14及び第2RA15は筐体18に収納
される。A second reception bandpass filter (RXF) 14 connected to the other terminal of the first SW 3 and a second reception band filter (RXF) 14
A second amplifying the output signal of the RXF 14 to a desired level
A receiving low noise amplifier (RA) 15 is provided, and a second RA1
5 is input to the other input terminal of the second SW6. Here, the frequency bands of the second RXF 14 and the second RA 15 are the same as those of the first RXF 4 and the first RA 5. Power is supplied to the second RA 15 through the third power supply terminal 16, and the first SW 3 and the second SW 6 are simultaneously switched to the position of the solid line or the dotted line by the control signal input through the control terminal 17. Normally, the first SW3 and the second SW6 are also connected as indicated by solid lines. Further, the first SW 3, the heat shielding box 10, the cooling means 11, the second SW
6, the second RXF 14 and the second RA 15 are housed in the housing 18.
【0005】第1RXF4及び第1RA5は、例えばデ
ュワー瓶等の熱遮蔽函10に封入され、冷却手段11の
冷却部材11aにより、例えば数10K程度といった極
めて低い温度に長時間安定して冷却される。ここで冷却
手段11は、例えばヘリウムガスの圧縮・膨張による熱
交換サイクルを利用する極低温冷凍機で構成され、これ
らは市販の製品を利用することができる。The first RXF 4 and the first RA 5 are sealed in a heat shielding box 10 such as a Dewar bottle, and are stably cooled to an extremely low temperature of, for example, about several tens K for a long time by the cooling member 11 a of the cooling means 11. Here, the cooling means 11 is composed of, for example, a cryogenic refrigerator using a heat exchange cycle by compression and expansion of helium gas, and these can be commercially available products.
【0006】このように、第1RXF4及び第1RA5
を長時間安定して極限的に冷却することにより、第1R
XF4及び第1RA5で発生する熱雑音を極限的に低減
するとともに、第1RXF4を構成する段数を増やして
も低温のため損失分が少なくてすむので減衰特性を急峻
にすることができる。その結果、図10に示した構成を
用いることにより、低いレベルの受信信号に対しても、
例えば規定されたC/N比(搬送波電力/雑音電力)の
受信出力を得ることができる。また、規定されたC/N
比受信出力を得るのに必要な送信側の送信電力が小さく
て済む。Thus, the first RXF4 and the first RA5
The first R
The thermal noise generated in the XF4 and the first RA5 can be reduced to the utmost, and even if the number of stages constituting the first RXF4 is increased, the loss can be reduced due to the low temperature, so that the attenuation characteristics can be sharpened. As a result, by using the configuration shown in FIG. 10, even for a low-level received signal,
For example, a reception output with a specified C / N ratio (carrier power / noise power) can be obtained. Also, the specified C / N
The transmission power on the transmission side required to obtain the specific reception output can be small.
【0007】次に、この高信頼無線受信機の動作につい
て説明する。第1RA5で動作異常が発生すると、出力
端子7から伝送される受信信号が著しく劣化するか、或
いは受信不能という状態に陥る。そこで、例えば出力端
子7よりの受信信号を屋内装置(図示せず)で監視し、
受信信号が著しく劣化しているか、または、受信不能で
あると判断される場合、屋内装置から制御端子17を通
じて制御信号を送出し、第1SW3及び第2SW6が共
に点線の状態となるように切り替える。このとき、アン
テナ1よりの信号は第2RXF14及び第2RA15を
通じて出力端子7に供給される。つまり、第1RXF4
及び第1RA5の予備系である第2RXF14及び第2
RA15を通して信号が受信されることになる。第2R
XF14及び第2RA15は冷却されない構成となって
おり、第1RXF4及び第1RA5の場合と比較すると
冷却による雑音指数の改善効果はないものの、安価で簡
素に構成でき、かつ受信不能という状態を回避すること
が可能となる。Next, the operation of this highly reliable radio receiver will be described. When an operation abnormality occurs in the first RA5, the received signal transmitted from the output terminal 7 is significantly deteriorated or falls into a state where reception is impossible. Therefore, for example, a reception signal from the output terminal 7 is monitored by an indoor device (not shown),
When it is determined that the received signal is significantly degraded or unreceivable, a control signal is sent from the indoor device through the control terminal 17, and switching is performed so that both the first SW3 and the second SW6 are in the state of the dotted line. At this time, the signal from the antenna 1 is supplied to the output terminal 7 through the second RXF 14 and the second RA 15. That is, the first RXF4
And the second RXF 14 and the second
The signal will be received through RA15. 2nd R
The XF 14 and the second RA 15 are configured not to be cooled. Although the noise figure is not improved by the cooling as compared with the case of the first RXF 4 and the first RA 5, the XF 14 and the second RA 15 can be configured inexpensively and simply and avoid a state where reception is impossible. Becomes possible.
【0008】[0008]
【発明が解決しようとする課題】従来の高信頼無線受信
機において、第1RA5に障害が発生した場合の動作異
常検出方法として、出力端子7よりの受信信号のレベル
を観測し、そのレベルの低下をもって動作異常と判断す
る方法がある。しかし、このような受信信号のレベルに
依存する動作異常検出機能は、例えば送受信設備が移動
しない固定回線では、受信信号のレベルが一定であるこ
とから受信信号のレベルの低下により第1RA5の動作
異常を検出することができるが、携帯・自動車電話等の
移動通信方式用基地局装置では、通信相手が常に移動し
ているために受信信号レベルが大きく変化するので、第
1RA5の動作異常を受信信号のレベルの低下により検
出することはできないという問題があった。In the conventional high-reliability radio receiver, as a method for detecting an operation abnormality when a failure occurs in the first RA5, the level of a signal received from the output terminal 7 is observed and the level is reduced. There is a method of judging that the operation is abnormal by using However, such an operation abnormality detection function that depends on the level of the received signal is performed, for example, on a fixed line where the transmission / reception equipment does not move, because the level of the received signal is constant because the level of the received signal is constant. However, in a mobile communication system base station apparatus such as a cellular phone or a mobile phone, the reception signal level greatly changes because the communication partner is constantly moving, so that the first RA5 operation abnormality is detected. There is a problem that it cannot be detected due to a decrease in the level of
【0009】また、従来の高信頼無線受信機において
は、冷却手段11で発生する障害を直接検出することが
できないだけでなく、第1RA5に障害が発生した場合
に予備系として動作する第2RA15に関して、それが
正常であるかどうか、すなわち予備系として正しく機能
するかどうかを確認する手段がないという問題があっ
た。Further, in the conventional high-reliability radio receiver, not only the failure occurring in the cooling means 11 cannot be directly detected, but also the second RA 15 which operates as a standby system when a failure occurs in the first RA 5. However, there is a problem that there is no means for confirming whether it is normal, that is, whether it functions properly as a standby system.
【0010】本発明の目的は、高信頼無線受信機の第1
RA5または冷却手段11に障害が発生した場合に、確
実に予備系統に切り替えることにより受信不能となる状
態を回避することができるとともに、予備系である第2
RA15の動作を監視することのできる高信頼無線受信
機を提供することにある。[0010] An object of the present invention is to provide a first reliable radio receiver.
When a failure occurs in the RA 5 or the cooling means 11, it is possible to avoid a state in which reception is not possible by reliably switching to the standby system, and to prevent the second system being the standby system.
An object of the present invention is to provide a highly reliable wireless receiver capable of monitoring the operation of the RA15.
【0011】[0011]
(1)請求項1の発明は、アンテナと、アンテナフィー
ダと、そのアンテナフィーダからの信号が入力され、制
御信号により切り替えられる第1信号切替手段と、その
第1信号切替手段の一方に接続された第1受信帯域フィ
ルタと、その第1受信帯域フィルタに接続された第1受
信低雑音増幅器と、その第1受信低雑音増幅器の出力側
に設けられ、制御信号により切り替えられる第2信号切
替手段と、その第2信号切替手段よりの出力信号を出力
する出力端子と、第1信号切替手段のもう一方の接続端
子に接続された第2受信帯域フィルタと、その第2受信
帯域フィルタに接続され、第2信号切替手段のもう一方
の接続端子に接続された第2受信低雑音増幅器とを有
し、第1受信帯域フィルタ及び第1受信低雑音増幅器は
熱遮蔽函に封入されて冷却手段により冷却され、第1受
信低雑音増幅器、冷却手段及び第2受信低雑音増幅器に
それぞれ第1,第2及び第3電源端子を通して動作電力
が供給される高信頼無線受信機に関する。(1) The invention according to claim 1 is connected to an antenna, an antenna feeder, a first signal switching means to which a signal from the antenna feeder is input and switched by a control signal, and one of the first signal switching means. A first reception bandpass filter, a first reception low noise amplifier connected to the first reception bandpass filter, and a second signal switching means provided on the output side of the first reception low noise amplifier and switched by a control signal And an output terminal for outputting an output signal from the second signal switching means, a second reception band filter connected to the other connection terminal of the first signal switching means, and a second reception band filter connected to the second reception band filter. , A second reception low-noise amplifier connected to the other connection terminal of the second signal switching means, wherein the first reception band-pass filter and the first reception low-noise amplifier are enclosed in a heat shielding box. It is cooled by the cooling means, first receiving a low-noise amplifier, the first respectively the cooling means and the second reception low noise amplifier, to a high radio receiver operating power through the second and third power terminal is supplied.
【0012】請求項1では、第1及び第2受信帯域フィ
ルタの減衰帯域内の周波数を有するパイロット信号を発
生するパイロット信号発生手段と、第1受信帯域フィル
タ及び第1受信低雑音増幅器の間の経路に挿入された第
1パイロット信号注入手段と、第2受信帯域フィルタ及
び上記第2受信低雑音増幅器の間の経路に挿入された第
2パイロット信号注入手段と、第1受信低雑音増幅器の
出力側と第2信号切替手段の間であって、熱遮蔽函の外
側に挿入された第1分配手段と、第2受信低雑音増幅器
の出力側と第2信号切替手段の間に挿入された第2分配
手段とが設けられる。According to the present invention, a pilot signal generating means for generating a pilot signal having a frequency within the attenuation band of the first and second reception band filters is provided between the first reception band filter and the first reception low noise amplifier. First pilot signal injection means inserted into the path, second pilot signal injection means inserted into the path between the second reception bandpass filter and the second reception low noise amplifier, and the output of the first reception low noise amplifier Between the first side and the second signal switching means, the first distribution means inserted outside the heat shielding box, and the second distribution means inserted between the output side of the second reception low noise amplifier and the second signal switching means. Two distribution means are provided.
【0013】また、第1分配手段より分配された信号よ
りパイロット信号のレベルを検出する第1レベル検出手
段と、第2分配手段より分配された信号よりパイロット
信号のレベルを検出する第2レベル検出手段と、第1レ
ベル検出手段により検出されたパイロット信号のレベル
とあらかじめ設定されたしきい値とを比較し、パイロッ
ト信号のレベルがしきい値よりも低い場合に、第1及び
第2信号切替手段を切り替えるとともに第1警報信号を
送出し、第2レベル検出手段により検出されたパイロッ
ト信号のレベルとしきい値とを比較し、パイロット信号
のレベルがしきい値よりも低い場合に、第2警報信号を
送出する制御手段と、上記制御手段内において第1及び
第2信号切替手段を手動で切り替える手動切替手段とが
設けられる。Further, first level detecting means for detecting the level of the pilot signal from the signal distributed by the first distributing means, and second level detecting for detecting the level of the pilot signal from the signal distributed by the second distributing means. Means for comparing the level of the pilot signal detected by the first level detection means with a preset threshold value, and when the level of the pilot signal is lower than the threshold value, switching between the first and second signals. Switching the means and transmitting a first alarm signal, comparing the level of the pilot signal detected by the second level detection means with a threshold value, and when the level of the pilot signal is lower than the threshold value, Control means for transmitting a signal and manual switching means for manually switching the first and second signal switching means in the control means are provided.
【0014】第1受信帯域フィルタは超電導材料で構成
され、冷却手段により超電導状態とされている。 (2)請求項2の発明では、上記(1)において、第1
及び第3電源端子の代わりに共通の電源端子を設け、そ
の共通の電源端子から供給される電力を電源分配手段に
より分配して、第1及び第2受信低雑音増幅器に供給す
る。The first reception bandpass filter is made of a superconducting material, and is brought into a superconducting state by cooling means. (2) In the invention of claim 2, in the above (1), the first
In addition, a common power supply terminal is provided in place of the third power supply terminal, and the power supplied from the common power supply terminal is distributed by the power distribution unit and supplied to the first and second reception low noise amplifiers.
【0015】(3)請求項3の発明では、上記(2)の
第2電源端子を削除し、上記電力分配手段から冷却手段
にも動作電力を供給する。 (4)請求項4の発明では、上記(1)において、第1
及び第3電源端子が削除され、第2信号切替手段と出力
端子との間に挿入され、出力端子を介して供給された動
作電力を高周波の受信信号より分離する電力分離フィル
タと、その電力分離フィルタにより分離された電力を安
定化して第1及び第2受信低雑音増幅器へ供給する電力
安定化手段が設けられる。(3) According to the third aspect of the present invention, the second power supply terminal of (2) is deleted, and the operating power is also supplied from the power distribution means to the cooling means. (4) In the invention of claim 4, in the above (1), the first
And a power separation filter inserted between the second signal switching means and the output terminal, wherein the power separation filter separates the operating power supplied through the output terminal from the high-frequency reception signal, and the power separation filter. Power stabilization means is provided for stabilizing the power separated by the filter and supplying the stabilized power to the first and second receiving low noise amplifiers.
【0016】(5)請求項5の発明では、上記(4)に
おいて、第2電源端子が削除され、電力安定化手段から
冷却手段にも動作電力を供給する。 (6)請求項6の発明では、上記(1)乃至(5)の何
れかにおいて、熱遮蔽函内の温度を検出する温度検出手
段を設け、制御手段は、温度検出手段より熱遮蔽函内の
温度情報を得、その温度情報があらかじめ定められた温
度以上のとき、第1及び第2信号切替手段を切り替える
とともに、第3警報信号を送出する。(5) In the invention of claim 5, in the above (4), the second power supply terminal is deleted, and the operating power is supplied from the power stabilizing means to the cooling means. (6) In the invention according to claim 6, in any one of the above (1) to (5), a temperature detecting means for detecting a temperature in the heat shielding box is provided, and the control means is provided in the heat shielding box by the temperature detecting means. When the temperature information is equal to or higher than a predetermined temperature, the first and second signal switching means are switched and a third alarm signal is transmitted.
【0017】(7)請求項7の発明では、上記(6)に
おいて、温度検出手段は熱遮蔽函内の第1受信帯域フィ
ルタ、第1受信低雑音増幅器または冷却手段の冷却部材
の温度を検出する。 (8)請求項8の発明では、上記(1)乃至(7)の何
れかにおいて、第1及び第2レベル検出手段の代わりに
共通のレベル検出手段を設けるとともに、第1及び第2
分配手段よりの信号を切り替えて共通のレベル検出手段
に供給する第3信号切替手段が設けられる。(7) In the invention of claim 7, in the above (6), the temperature detecting means detects the temperature of the first receiving bandpass filter, the first receiving low noise amplifier or the cooling member of the cooling means in the heat shielding box. I do. (8) In the invention of claim 8, in any one of the above (1) to (7), a common level detecting means is provided instead of the first and second level detecting means, and the first and second level detecting means are provided.
Third signal switching means for switching the signal from the distribution means and supplying the signal to the common level detection means is provided.
【0018】(9)請求項9の発明では、上記(1)乃
至(7)の何れかにおいて、超電導材料は高温超電導体
で構成される。 (10)請求項10の発明では、上記(1)乃至(7)
の何れかにおいて、アンテナフィーダが省略されて、ア
ンテナが装置筐体に直結される。(9) In the ninth aspect of the present invention, in any one of the above (1) to (7), the superconducting material comprises a high-temperature superconductor. (10) According to the tenth aspect, the above (1) to (7)
In any one of the above, the antenna feeder is omitted, and the antenna is directly connected to the device housing.
【0019】[0019]
【発明の実施の形態】請求項1の発明の実施例を図1
に、図10と対応する部分に同一の符号を付けて示す。
この実施例では、第1RXF4及び第2RXF14の減
衰帯域の範囲内のパイロット信号を発生するパイロット
信号発生手段21が熱遮蔽函10の外側に設けられ、パ
イロット信号発生手段21で発生されたパイロット信号
を第1RXF4と第1RA5の間及び第1RXF14と
第2RA15の間にそれぞれ注入する第1パイロット信
号注入手段22及び第2パイロット信号注入手段23が
設けられる。また、第1RA5と第2SW6の間に第1
分配手段24が設けられ、第2RA15と第2SW6の
間に第2分配手段25が設けられる。さらに、第1分配
手段24及び第2分配手段25で分配された信号からパ
イロット信号のレベルをそれぞれ検出する第1レベル検
出手段26及び第2レベル検出手段27が設けられる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
The same reference numerals are used to designate portions corresponding to those in FIG.
In this embodiment, a pilot signal generating means 21 for generating a pilot signal within the range of the attenuation band of the first RXF 4 and the second RXF 14 is provided outside the heat shielding box 10 and the pilot signal generated by the pilot signal generating means 21 is provided. A first pilot signal injecting means 22 and a second pilot signal injecting means 23 for injecting between the first RXF 4 and the first RA 5 and between the first RXF 14 and the second RA 15 are provided. Also, the first switch between the first RA5 and the second SW6.
Distributing means 24 is provided, and second distributing means 25 is provided between the second RA 15 and the second SW 6. Further, a first level detecting means 26 and a second level detecting means 27 for detecting the level of the pilot signal from the signals distributed by the first dividing means 24 and the second dividing means 25 are provided.
【0020】第1レベル検出手段26及び第2レベル検
出手段27の出力信号が制御手段28に入力される。さ
らにこの制御手段28には、手動にて第1SW3及び第
2SW6を切り替える手動切替手段29が設けられる。
パイロット信号発生手段21,第1分配手段24,第2
分配手段25,第1レベル検出手段26,第2レベル検
出手段27及び制御手段28は1つの筐体18に収納さ
れる。The output signals of the first level detecting means 26 and the second level detecting means 27 are input to the control means 28. Further, the control means 28 is provided with a manual switching means 29 for manually switching between the first SW3 and the second SW6.
Pilot signal generation means 21, first distribution means 24, second
The distribution unit 25, the first level detection unit 26, the second level detection unit 27, and the control unit 28 are housed in one case 18.
【0021】第1RXF4は超電導材料で構成され、冷
却手段11による冷却により超電導材料は超電導状態と
されている点が図10とは異なる。第1レベル検出手段
26及び第2レベル検出手段27は選択レベルメータ等
が利用できる。制御手段28は、あらかじめ設定された
しきい値電圧を発生する基準電圧発生手段とコンパレー
タ等で構成されるか、あるいは基本回路としてのマイク
ロプロセッサ、A/D変換器、ROM,RAM,D/A
変換器等により構成され、いずれの構成においても、第
1レベル検出手段26及び第2レベル検出手段27より
の信号を監視しつつ、あらかじめ設定されたしきい値と
比較し、しきい値よりも低い場合には第1SW3及び第
2SW6を切り替える、又は/及び、所定の警報信号を
送出する機能を有する。The first RXF 4 is made of a superconducting material, and differs from FIG. 10 in that the superconducting material is brought into a superconducting state by cooling by the cooling means 11. As the first level detecting means 26 and the second level detecting means 27, a selection level meter or the like can be used. The control means 28 is composed of a reference voltage generating means for generating a preset threshold voltage and a comparator, or a microprocessor as a basic circuit, an A / D converter, a ROM, a RAM, a D / A
In any configuration, while monitoring the signals from the first level detecting means 26 and the second level detecting means 27, the signals are compared with a preset threshold value, When it is low, it has a function of switching the first SW3 and the second SW6 and / or transmitting a predetermined alarm signal.
【0022】第1RXF4は、例えばマイクロストリッ
プラインで構成され、そのマイクロストリップラインを
構成するグランド層と信号線とがともに超電導材料で構
成され、これらが冷却手段11による冷却により超電導
状態とされているため、第1RXF4にて発生する熱雑
音が著しく小さく、従って受信機の雑音指数が改善され
る。The first RXF 4 is formed of, for example, a microstrip line, and the ground layer and the signal line forming the microstrip line are both formed of a superconducting material, and these are brought into a superconducting state by cooling by the cooling means 11. Therefore, the thermal noise generated in the first RXF 4 is extremely small, and thus the noise figure of the receiver is improved.
【0023】次に、本実施例の動作について説明する。
パイロット信号発生手段21で発生されたパイロット信
号は第1パイロット信号注入手段22により注入され
る。このとき、パイロット信号の周波数は第1RXF4
の減衰帯域になるように設定されているから、注入され
たパイロット信号は第1RXF4で反射され、第1RA
5に入力されるのでパイロット信号がアンテナ1から放
射されることはなく、他のシステムに妨害を与える心配
はない。パイロット信号が付加された受信信号は第1R
A5で増幅された後、第1分配手段24で分配され、第
1レベル検出手段26において、注入されたパイロット
信号のレベルが検出される。この検出されたパイロット
信号のレベルが制御手段28で監視され、あらかじめ設
定されたしきい値よりも低い場合には、第1SW3及び
第2SW6がそれぞれ実線の位置から点線の位置に切り
替えられるとともに、第1RA5の系統に障害が発生し
たことを表す第1警報信号が端子30を通して出力され
る。Next, the operation of this embodiment will be described.
The pilot signal generated by the pilot signal generation means 21 is injected by the first pilot signal injection means 22. At this time, the frequency of the pilot signal is the first RXF4
, The injected pilot signal is reflected by the first RXF 4 and the first RA
5, the pilot signal is not radiated from the antenna 1, and there is no fear of interfering with other systems. The received signal to which the pilot signal is added is the first R
After being amplified by A5, the signal is distributed by the first distributor 24, and the level of the injected pilot signal is detected by the first level detector 26. The level of the detected pilot signal is monitored by the control means 28, and when it is lower than a preset threshold value, the first SW 3 and the second SW 6 are respectively switched from the solid line position to the dotted line position, and A first alarm signal indicating that a failure has occurred in the 1RA5 system is output through the terminal 30.
【0024】一方、パイロット信号は第1パイロット信
号注入手段と同様に第2パイロット信号注入手段23に
よって注入され、第2RA15で増幅された後、第2分
配手段25で分配され、第2レベル検出手段27におい
ても、注入されたパイロット信号のレベルが検出され
る。この検出されたパイロット信号のレベルが制御手段
28で監視され、あらかじめ設定されたしきい値よりも
低い場合には第2RA15の系統に障害が発生したこと
を表す第2警報信号が端子30を通して出力される。On the other hand, the pilot signal is injected by the second pilot signal injection means 23 in the same manner as the first pilot signal injection means, amplified by the second RA 15 and then distributed by the second distribution means 25 to obtain the second level detection means. Also at 27, the level of the injected pilot signal is detected. The level of the detected pilot signal is monitored by the control means 28. If the level is lower than a preset threshold value, a second alarm signal indicating that a failure has occurred in the system of the second RA 15 is output through the terminal 30. Is done.
【0025】また、手動にて第1SW3及び第2SW6
を切り替えることができるように手動切替手段29が制
御手段28に併せて設けられており、保守・点検時に
は、保守者がこの手動切替手段29を操作することによ
り、手動で予備系である第2RXF14及び第2RA1
5の経路に切り替えられる構成にもなっている。以上の
ように、受信信号とは独立したパイロット信号を用い、
かつ、パイロット信号のレベルをあらかじめ設定された
しきい値と比較することで、第1RA5及び第2RA1
5の動作異常を確実に検出できるとともに障害発生を表
す警報信号を送出することができる。その結果、制御手
段28により、または保守者が手動切替手段29を操作
することにより予備系に切り替わるので第1RA5の動
作異常時にも、また保守・点検時にも受信不能という状
態を回避することができる。The first SW3 and the second SW6 are manually operated.
A manual switching means 29 is provided in addition to the control means 28 so that the maintenance person can manually switch the second RXF 14 which is a standby system by operating the manual switching means 29 during maintenance and inspection. And the second RA1
The configuration is also such that the path can be switched to five. As described above, using a pilot signal independent of the received signal,
In addition, the first RA5 and the second RA1 are compared by comparing the level of the pilot signal with a preset threshold value.
5 can be reliably detected and an alarm signal indicating the occurrence of a failure can be transmitted. As a result, the system is switched to the standby system by the control unit 28 or the maintenance person operating the manual switching unit 29, so that a state in which reception is not possible even when the operation of the first RA 5 is abnormal or during maintenance / inspection can be avoided. .
【0026】なお、図1おいては、第1パイロット信号
注入手段22を冷却手段11で冷却しない例を記載して
いるが、第1パイロット信号注入手段22を冷却手段1
1により冷却する構成としてもよい。図2に示すよう
に、共通の電源端子12’及び電源分配手段31を通し
て第1RA5及び第2RA15のそれぞれに動作電力を
供給するようにしてもよく(請求項2)、この場合、電
源端子を節減することができる。Although FIG. 1 shows an example in which the first pilot signal injection means 22 is not cooled by the cooling means 11, the first pilot signal injection means 22 is not cooled by the cooling means 1.
1 may be used for cooling. As shown in FIG. 2, the operating power may be supplied to each of the first RA5 and the second RA15 through the common power supply terminal 12 'and the power distribution means 31 (claim 2). can do.
【0027】図3に示すように、共通の電源端子12’
及び電源分配手段31を通して第1RA5及び第2RA
15の他にさらに冷却手段11のそれぞれに動作電力を
供給するようにしてもよく(請求項3)、この場合、さ
らに電源端子を節減することができる。図4に示すよう
に、アンテナ1をアンテナフィーダ2を介さずに筐体1
8に直結してもよい(請求項10)。このようにアンテ
ナフィーダ2を除去することでアンテナフィーダ2の損
失分を低減することができ、結果として受信機全体の雑
音指数を改善できるので、さらに受信感度が改善され
る。図4は図1の実施例を基にしているが、勿論図2、
図3の実施例にも適用できる。As shown in FIG. 3, a common power supply terminal 12 '
And the first RA5 and the second RA through the power distribution means 31.
Operation power may be supplied to each of the cooling means 11 in addition to the cooling means 11 (claim 3). In this case, the number of power supply terminals can be further reduced. As shown in FIG. 4, the antenna 1 is connected to the housing 1 without the antenna feeder 2.
8 (claim 10). By removing the antenna feeder 2 in this manner, the loss of the antenna feeder 2 can be reduced, and as a result, the noise figure of the entire receiver can be improved, so that the reception sensitivity is further improved. FIG. 4 is based on the embodiment of FIG. 1, but of course FIG.
It can be applied to the embodiment of FIG.
【0028】図5は、請求項4の発明による高信頼無線
受信機の実施例を示す。この発明では、図1の実施例と
比較して、第1電源端子12及び第3電源端子16に代
えて、第2SW6と出力端子7の間であって筐体18の
内部に電力分離フィルタ41が設けられていること、ま
た電力分離フィルタ41の出力電力を安定化する電力安
定化手段42が熱遮蔽函10の外側に設けられている点
が異なる。FIG. 5 shows an embodiment of a highly reliable radio receiver according to the present invention. According to the present invention, as compared with the embodiment of FIG. 1, instead of the first power supply terminal 12 and the third power supply terminal 16, a power separation filter 41 is provided between the second SW 6 and the output terminal 7 and inside the housing 18. And that the power stabilizing means 42 for stabilizing the output power of the power separation filter 41 is provided outside the heat shielding box 10.
【0029】第1RA5及び第2RA15に電力を供給
する方法として、受信信号に直流または低周波電流を重
畳して屋内から送出する方法、すなわち、ファントム給
電方法も利用できる。この実施例は、第1RA5及び第
2RA15への給電方法として、ファントム給電がなさ
れた場合で、出力端子7に接続された伝送線(図示せ
ず)を通じて屋内の受信信号復調手段などが設けられて
いるところから、直流電流または低周波電流が前記伝送
線を通し、出力端子7から電力分離フィルタ41へ供給
されている。電力分離フィルタ41は、受信信号と直流
または低周波電流を分離する簡単な分波器で構成され
る。また、電力安定化手段42は電力分離フィルタ41
で分離された直流または低周波電流を安定化させるとと
もに所定の電圧の直流を安定に出力する手段であり、D
C−DCコンバータやスイッチング電源等により構成可
能である。このようにすることで、屋内からの電源ケー
ブルを低減しつつ、かつ高信頼無線受信機を構成するこ
とができるという利点がある。なお、本実施例を図4に
示したようにアンテナフィーダ2を除去し、アンテナ1
を筐体18に直結した構成に適用してもよい。As a method of supplying power to the first RA5 and the second RA15, a method of superimposing a DC or low-frequency current on a received signal and transmitting the signal indoors, that is, a phantom power supply method can also be used. In this embodiment, as a method of supplying power to the first RA5 and the second RA15, when phantom power is supplied, an indoor received signal demodulating means or the like is provided through a transmission line (not shown) connected to the output terminal 7. From there, a direct current or a low frequency current is supplied from the output terminal 7 to the power separation filter 41 through the transmission line. The power separation filter 41 is configured by a simple duplexer that separates a received signal from a DC or low-frequency current. Further, the power stabilizing means 42 includes a power separating filter 41.
Means for stabilizing the DC or low-frequency current separated by the DC and stably outputting a DC of a predetermined voltage.
It can be configured by a C-DC converter, a switching power supply, or the like. By doing so, there is an advantage that a highly reliable wireless receiver can be configured while reducing the number of indoor power cables. In this embodiment, the antenna feeder 2 is removed as shown in FIG.
May be applied to a configuration directly connected to the housing 18.
【0030】図6に示すように、電力安定化手段42を
通してさらに冷却手段11に動作電力を供給するように
してもよく(請求項5)、この場合、さらに電源端子を
節減することができる。勿論、本実施例を図4に示した
ようにアンテナフィーダ2を除去し、アンテナ1を筐体
18に直結した構成に適用してもよい。図7は請求項6
による発明の高信頼無線受信機の実施例を示す。この実
施例は図1の実施例と比較して熱遮蔽函10の内部の温
度を測定する温度検出手段51が熱遮蔽函10の内部に
設けられている点が異なる。As shown in FIG. 6, the operating power may be further supplied to the cooling means 11 through the power stabilizing means 42 (claim 5). In this case, the number of power supply terminals can be further reduced. Of course, the present embodiment may be applied to a configuration in which the antenna feeder 2 is removed as shown in FIG. FIG. 7 shows claim 6
1 shows an embodiment of a reliable wireless receiver according to the invention according to the present invention. This embodiment differs from the embodiment of FIG. 1 in that a temperature detecting means 51 for measuring the temperature inside the heat shield box 10 is provided inside the heat shield box 10.
【0031】制御手段28は、第1レベル検出手段26
及び第2レベル検出手段27よりの検出レベルだけでな
く、温度検出手段51で検出された熱遮蔽函10の内部
の温度も監視しつつ、温度検出手段よりの信号があらか
じめ設定されたしきい値よりも高くなる場合にも、第1
SW及び第2SW6を共に実線から点線の位置に切り替
えるとともに、冷却障害が発生したことを表す第3警報
信号が端子30を通して送出されるような構成となって
いる。The control means 28 includes a first level detecting means 26
While monitoring not only the detection level from the second level detection means 27 but also the temperature inside the heat shield box 10 detected by the temperature detection means 51, the signal from the temperature detection means is set to a predetermined threshold value. Higher than the first
Both the SW and the second SW 6 are switched from the solid line to the position indicated by the dotted line, and a third warning signal indicating that a cooling failure has occurred is transmitted through the terminal 30.
【0032】以上のような構成をとることにより、熱遮
蔽函10内の温度情報を得、これが所定値以上になる場
合にも、予備の受信系統に切り替わるので受信不能とい
う状態を回避することができるとともに、障害発生を表
す警報信号を送出することができる。なお、図7では図
1の構成例を基にしているが、図2乃至図6に示す構成
例を基にしても同様の効果が得られる。With the above configuration, the temperature information in the heat shielding box 10 is obtained, and even when the temperature information exceeds a predetermined value, the system is switched to the spare receiving system, thereby avoiding a state in which reception is impossible. In addition to this, an alarm signal indicating the occurrence of a failure can be transmitted. Although FIG. 7 is based on the configuration example of FIG. 1, similar effects can be obtained by using the configuration examples shown in FIG. 2 to FIG.
【0033】図8は請求項7による発明の高信頼無線受
信機の実施例を示す。この実施例では、図7の実施例と
比較して、図8(A)は第1RXF4の、図8(B)は
第1RA5の、図8(C)は冷却部材11aの温度をそ
れぞれ直接検出する点が異なる。このような構成をとる
ことにより冷却対象である第1RXF4,第1RA5ま
たは冷却部材11aで発生する温度障害をより正確に検
出することができる。FIG. 8 shows an embodiment of a reliable radio receiver according to the present invention. In this embodiment, as compared with the embodiment of FIG. 7, FIG. 8 (A) directly detects the temperature of the first RXF4, FIG. 8 (B) detects the temperature of the first RA5, and FIG. Is different. With such a configuration, a temperature failure occurring in the first RXF4, the first RA5, or the cooling member 11a to be cooled can be more accurately detected.
【0034】図9に示すように、制御手段28によって
切り替えられる第3信号切替手段(SW)61を設け、
共通のレベル検出手段26’によりパイロット信号のレ
ベルを検出してもよく(請求項8)。この場合、さらに
レベル検出手段を節減することができる。なお、図9で
は図1の実施例を基にしているが、図2乃至図8に示す
構成例においても同様の効果が得られる。As shown in FIG. 9, third signal switching means (SW) 61 switched by the control means 28 is provided.
The level of the pilot signal may be detected by the common level detecting means 26 '(claim 8). In this case, the level detecting means can be further reduced. Although FIG. 9 is based on the embodiment of FIG. 1, similar effects can be obtained in the configuration examples shown in FIGS.
【0035】また、図示していないが、第1RXF4を
構成する際、超電導材料として高温超電導体を成分に含
む材料を用いることができる(請求項9)。高温超電導
体としては、例えば銅酸化物を成分に含む超電導体があ
る。高温超電導体の中には超電導状態が達成される臨界
温度が100Kを超えるものもあり、このような超電導
体では、例えば液体窒素の沸点77.4K程度に冷却する
だけで超電導状態が得られるため、冷却手段11の冷却
能力を緩和できるとともに、より小形で、かつ安価な極
低温冷凍機が使用可能となる。その結果、高信頼無線受
信機を小形かつ安価に構成することができる。Although not shown, when forming the first RXF 4, a material containing a high-temperature superconductor as a component can be used as the superconducting material. Examples of the high-temperature superconductor include a superconductor containing copper oxide as a component. In some high-temperature superconductors, the critical temperature at which the superconducting state is achieved exceeds 100 K. In such a superconductor, for example, the superconducting state can be obtained only by cooling the liquid nitrogen to a boiling point of about 77.4 K. In addition, the cooling capacity of the cooling means 11 can be reduced, and a smaller and less expensive cryogenic refrigerator can be used. As a result, the high-reliability wireless receiver can be made small and inexpensive.
【0036】[0036]
【発明の効果】 以上述べたように、この発明では常時パイロット信
号を第1RA5に入力し、その出力レベルを監視するこ
とによって、第1RA5の障害を検出し、予備系に切り
替えることができる。 また、温度検出手段15を熱遮蔽函内に設けて、温
度監視することによって冷却手段11の障害を検出し、
予備系に切り替えることができる。As described above, according to the present invention, by constantly inputting a pilot signal to the first RA5 and monitoring its output level, it is possible to detect a failure in the first RA5 and switch to the standby system. Further, the temperature detecting means 15 is provided in the heat shielding box, and the temperature of the cooling means 11 is detected by monitoring the temperature.
You can switch to the standby system.
【0037】 パイロット信号を予備系の第2RA1
5に入力し、その出力レベルを常時監視して正常か否か
を検知することにより、信頼性の高い保守を行うことが
できる。The pilot signal is transferred to the second RA1 of the standby system.
5 and constantly monitoring its output level to detect whether it is normal or not, it is possible to perform highly reliable maintenance.
【図1】請求項1の発明の実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図2】請求項2の発明の実施例を示すブロック図。FIG. 2 is a block diagram showing an embodiment of the invention of claim 2;
【図3】請求項3の発明の実施例を示すブロック図。FIG. 3 is a block diagram showing an embodiment of the invention of claim 3;
【図4】請求項10の発明の実施例を示すブロック図。FIG. 4 is a block diagram showing an embodiment of the invention according to claim 10;
【図5】請求項4の発明の実施例を示すブロック図。FIG. 5 is a block diagram showing an embodiment of the invention of claim 4;
【図6】請求項5の発明の実施例を示すブロック図。FIG. 6 is a block diagram showing an embodiment of the invention of claim 5;
【図7】請求項6の発明の実施例を示すブロック図。FIG. 7 is a block diagram showing an embodiment of the invention of claim 6;
【図8】請求項7の発明の実施例を示すブロック図。FIG. 8 is a block diagram showing an embodiment of the invention of claim 7;
【図9】請求項8の発明の実施例を示すブロック図。FIG. 9 is a block diagram showing an embodiment of the invention of claim 8;
【図10】従来の高感度無線受信機を示すブロック図。FIG. 10 is a block diagram showing a conventional high-sensitivity wireless receiver.
1 アンテナ 1a アンテナ結合部材 2 アンテナフィーダ 3 第1信号切替手段(SW) 4 第1受信帯域フィルタ(RXF) 5 第1受信低雑音増幅器(RA) 6 第2信号切替手段(SW) 7 出力端子 8,9 終端器 10 熱遮蔽函 11 冷却手段 12 第1電源端子 12’ 共通の電源端子 13 第2電源端子 14 第2受信帯域フィルタ(RXF) 15 第2受信低雑音増幅器(RA) 16 第3電源端子 17 制御端子 18 筐体 21 パイロット信号発生手段 22 第1パイロット信号注入手段 23 第2パイロット信号注入手段 24 第1分配手段 25 第2分配手段 26 第1レベル検出手段 26’ 共通のレベル検出手段 27 第2レベル検出手段 28 制御手段 29 手動切替手段 30 (警報)端子 31 電源分配手段 41 電力分離フィルタ 42 電力安定化手段 51 温度検出手段 Reference Signs List 1 antenna 1a antenna coupling member 2 antenna feeder 3 first signal switching means (SW) 4 first reception bandpass filter (RXF) 5 first reception low noise amplifier (RA) 6 second signal switching means (SW) 7 output terminal 8 , 9 Terminator 10 Heat shielding box 11 Cooling means 12 First power supply terminal 12 'Common power supply terminal 13 Second power supply terminal 14 Second reception bandpass filter (RXF) 15 Second reception low noise amplifier (RA) 16 Third power supply Terminal 17 Control terminal 18 Housing 21 Pilot signal generation means 22 First pilot signal injection means 23 Second pilot signal injection means 24 First distribution means 25 Second distribution means 26 First level detection means 26 'Common level detection means 27 Second level detecting means 28 Control means 29 Manual switching means 30 (Alarm) terminal 31 Power distribution means 41 Power separation unit Filter 42 the power stabilizing unit 51 temperature detecting means
Claims (10)
アンテナフィーダからの信号が入力され、制御信号によ
り切り替えられる第1信号切替手段と、その第1信号切
替手段の一方に接続された第1受信帯域フィルタと、そ
の第1受信帯域フィルタに接続された第1受信低雑音増
幅器と、その第1受信低雑音増幅器の出力側に設けら
れ、制御信号により切り替えられる第2信号切替手段
と、その第2信号切替手段よりの出力信号を出力する出
力端子と、上記第1信号切替手段のもう一方の接続端子
に接続された第2受信帯域フィルタと、その第2受信帯
域フィルタに接続され、上記第2信号切替手段のもう一
方の接続端子に接続された第2受信低雑音増幅器とを有
し、上記第1受信帯域フィルタ及び上記第1受信低雑音
増幅器は熱遮蔽函に封入されて冷却手段により冷却さ
れ、上記第1受信低雑音増幅器、冷却手段及び第2受信
低雑音増幅器にそれぞれ第1,第2及び第3電源端子を
通して動作電力が供給される高信頼無線受信機におい
て、 上記第1及び第2受信帯域フィルタの減衰帯域内の周波
数を有するパイロット信号を発生するパイロット信号発
生手段と、 上記第1受信帯域フィルタ及び上記第1受信低雑音増幅
器の間の経路に挿入された第1パイロット信号注入手段
と、 上記第2受信帯域フィルタ及び上記第2受信低雑音増幅
器の間の経路に挿入された第2パイロット信号注入手段
と、 上記第1受信低雑音増幅器の出力側と上記第2信号切替
手段の間であって、上記熱遮蔽函の外側に挿入された第
1分配手段と、 上記第2受信低雑音増幅器の出力側と上記第2信号切替
手段の間に挿入された第2分配手段と、 上記第1分配手段より分配された信号より上記パイロッ
ト信号のレベルを検出する第1レベル検出手段と、 上記第2分配手段より分配された信号より上記パイロッ
ト信号のレベルを検出する第2レベル検出手段と、 上記第1レベル検出手段により検出された上記パイロッ
ト信号のレベルとあらかじめ設定されたしきい値とを比
較し、上記パイロット信号のレベルが上記しきい値より
も低い場合に、上記第1及び第2信号切替手段を切り替
えるとともに第1警報信号を送出し、また、上記第2レ
ベル検出手段により検出された上記パイロット信号のレ
ベルと上記しきい値とを比較し、上記パイロット信号の
レベルが上記しきい値よりも低い場合に、第2警報信号
を送出する制御手段と、 上記制御手段に設けられた上記第1及び第2信号切替手
段を手動で切り替える手動切替手段とを具備し、 上記第1受信帯域フィルタは超電導材料で構成され、上
記冷却手段により超電導状態とされていることを特徴と
する高信頼無線受信機。1. An antenna, an antenna feeder, a first signal switching unit to which a signal from the antenna feeder is input and switched by a control signal, and a first reception band connected to one of the first signal switching units. A filter, a first reception low-noise amplifier connected to the first reception band-pass filter, a second signal switching means provided on an output side of the first reception low-noise amplifier, and switched by a control signal, An output terminal for outputting an output signal from the signal switching means, a second reception bandpass filter connected to the other connection terminal of the first signal switching means, and a second reception bandpass filter connected to the second reception bandpass filter; A second reception low-noise amplifier connected to the other connection terminal of the signal switching means, wherein the first reception band-pass filter and the first reception low-noise amplifier are enclosed in a heat shielding box The high-reliability radio receiver wherein the operating power is supplied to the first receiving low-noise amplifier, the cooling means, and the second receiving low-noise amplifier through the first, second, and third power supply terminals, respectively, and cooled by the cooling means. A pilot signal generating means for generating a pilot signal having a frequency within an attenuation band of the first and second reception band filters; and a pilot signal generation means inserted into a path between the first reception band filter and the first reception low noise amplifier. A first pilot signal injection means, a second pilot signal injection means inserted in a path between the second reception bandpass filter and the second reception low noise amplifier, and an output side of the first reception low noise amplifier. First distributing means inserted between the second signal switching means and outside the heat shielding box, an output side of the second receiving low noise amplifier, and the second signal switching means; A second distribution means inserted between the first distribution means, a first level detection means for detecting a level of the pilot signal from a signal distributed by the first distribution means, and a first level detection means for detecting a level of the pilot signal from the signal distributed by the second distribution means. Second level detecting means for detecting the level of the pilot signal; and comparing the level of the pilot signal detected by the first level detecting means with a preset threshold value. If the threshold value is lower than the threshold value, the first and second signal switching means are switched and a first alarm signal is transmitted, and the level of the pilot signal detected by the second level detection means and the threshold value are output. Control means for transmitting a second alarm signal when the level of the pilot signal is lower than the threshold value; And a manual switching means for manually switching between the first and second signal switching means. The first reception bandpass filter is made of a superconducting material, and is brought into a superconducting state by the cooling means. Reliable wireless receiver.
源端子の代わりに共通の電源端子を設け、その共通の電
源端子から供給される電力を電源分配手段により上記第
1及び第2受信低雑音増幅器に供給することを特徴とす
る高信頼無線受信機。2. A power supply according to claim 1, wherein a common power supply terminal is provided in place of said first and third power supply terminals, and power supplied from said common power supply terminal is supplied to said first and second reception terminals by power distribution means. A highly reliable wireless receiver for supplying to a low noise amplifier.
削除し、上記電力分配手段から上記冷却手段にも動作電
力を供給することを特徴とする高信頼無線受信機。3. The high-reliability wireless receiver according to claim 2, wherein the second power supply terminal is deleted, and operating power is also supplied from the power distribution unit to the cooling unit.
源端子が削除され、 上記第2信号切替手段と上記出力端子との間に挿入さ
れ、上記出力端子を介して供給された動作電力を高周波
の受信信号より分離する電力分離フィルタと、 上記電力分離フィルタにより分離された電力を安定化し
て上記第1及び第2受信低雑音増幅器へ供給する電力安
定化手段が設けられていることを特徴とする高信頼無線
受信機。4. The operating power supply according to claim 1, wherein the first and third power supply terminals are deleted, and inserted between the second signal switching means and the output terminal, and supplied through the output terminal. And a power stabilizing means for stabilizing the power separated by the power separating filter and supplying the separated power to the first and second receiving low-noise amplifiers. Highly reliable wireless receiver.
削除し、上記電力安定化手段から上記冷却手段にも動作
電力を供給することを特徴とする高信頼無線受信機。5. The high-reliability wireless receiver according to claim 4, wherein said second power supply terminal is deleted, and operating power is also supplied from said power stabilizing means to said cooling means.
熱遮蔽函内の温度を検出する温度検出手段を設け、 上記制御手段は、上記温度検出手段により上記熱遮蔽函
内の温度情報を得、その温度情報があらかじめ定められ
た温度以上のとき、上記第1及び第2信号切替手段を切
り替えるとともに、第3警報信号を送出することを特徴
とする高信頼無線受信機。6. The temperature control device according to claim 1, further comprising a temperature detection unit configured to detect a temperature in the heat shielding box, wherein the control unit uses the temperature detection unit to detect temperature information in the heat shielding box. A high-reliability wireless receiver characterized in that when the temperature information is equal to or higher than a predetermined temperature, the first and second signal switching means are switched and a third alarm signal is transmitted.
上記熱遮蔽函内の上記第1受信帯域フィルタ、第1受信
低雑音増幅器または冷却手段の冷却部材の温度を検出す
ることを特徴とする高信頼無線受信機。7. The temperature detecting means according to claim 6, wherein the temperature detecting means detects a temperature of the first receiving bandpass filter, the first receiving low noise amplifier or the cooling member of the cooling means in the heat shielding box. Highly reliable wireless receiver.
信機において、上記第1及び第2レベル検出手段の代わ
りに共通のレベル検出手段を設けるとともに、上記第1
及び第2分配手段よりの信号を切り替えて上記共通のレ
ベル検出手段に供給する第3信号切替手段を設けたこと
を特徴とする高信頼無線受信機。8. The high-reliability wireless receiver according to claim 1, further comprising: a common level detecting unit in place of said first and second level detecting units;
And a third signal switching means for switching a signal from the second distribution means and supplying the signal to the common level detection means.
信機において、上記超電導材料は高温超電導体で構成さ
れることを特徴とする高信頼無線受信機。9. The high-reliability wireless receiver according to claim 1, wherein said superconducting material comprises a high-temperature superconductor.
受信機において、上記アンテナフィーダが省略されて、
上記アンテナが装置筐体に直結されていることを特徴と
する高信頼無線受信機。10. The reliable wireless receiver according to claim 1, wherein said antenna feeder is omitted.
A highly reliable wireless receiver, wherein the antenna is directly connected to a device housing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02683797A JP3616978B2 (en) | 1997-02-10 | 1997-02-10 | Highly reliable wireless receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02683797A JP3616978B2 (en) | 1997-02-10 | 1997-02-10 | Highly reliable wireless receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10224269A true JPH10224269A (en) | 1998-08-21 |
JP3616978B2 JP3616978B2 (en) | 2005-02-02 |
Family
ID=12204389
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JP02683797A Expired - Lifetime JP3616978B2 (en) | 1997-02-10 | 1997-02-10 | Highly reliable wireless receiver |
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JP (1) | JP3616978B2 (en) |
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WO2000022691A3 (en) * | 1998-09-22 | 2000-10-26 | Illinois Superconductor Corp | Dual operation mode filter using superconducting resonators |
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US6731960B2 (en) | 1998-09-22 | 2004-05-04 | Isco International, Inc. | Dual operation mode all temperature filter using superconducting resonators with superconductive/non-superconductive mixture |
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