JPH04302543A - Maximum received electric field detecting circuit - Google Patents
Maximum received electric field detecting circuitInfo
- Publication number
- JPH04302543A JPH04302543A JP3091128A JP9112891A JPH04302543A JP H04302543 A JPH04302543 A JP H04302543A JP 3091128 A JP3091128 A JP 3091128A JP 9112891 A JP9112891 A JP 9112891A JP H04302543 A JPH04302543 A JP H04302543A
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- gain control
- received electric
- automatic gain
- analog
- 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
- 230000005684 electric field Effects 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 230000003321 amplification Effects 0.000 claims abstract 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract 2
- 238000001514 detection method Methods 0.000 claims description 10
- 238000011088 calibration curve Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Radio Transmission System (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ダイバーシティ受信装
置における各受信電界のうちの最大受信電界を検出する
最大受信電界検出回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maximum received electric field detection circuit for detecting the maximum received electric field among received electric fields in a diversity receiver.
【０００２】0002
【従来の技術】従来は、ダイバーシティ受信装置にいて
最大受信電界を検出する手段として、ダイオードが用い
られていた。図２に従来の最大受信電界検出回路をブロ
ック構成図で示す。2. Description of the Related Art Conventionally, a diode has been used as a means for detecting the maximum received electric field in a diversity receiver. FIG. 2 shows a block diagram of a conventional maximum received electric field detection circuit.
【０００３】図２において、受信アンテナ１１〜１ｎ（
ｎは自然数）で受信されたダイバーシティ受信信号は、
帯域ろ波器２１〜２ｎを通って低雑音増幅器３１〜３ｎ
に供給される。低雑音増幅器３１〜３ｎによって増幅さ
れた受信信号は、受信周波数変換器４１〜４ｎによって
中間周波数に変換される。周波数変換された受信信号は
自動利得制御増幅器５１〜５ｎに供給され、自動利得制
御が行われる。この自動利得制御が行われるときの自動
利得制御増幅器５１〜５ｎから、ダイオード６１〜６ｎ
によって自動利得制御電圧を検出し比較することによっ
て最大受信電界を検出するようにしていた。In FIG. 2, receiving antennas 11 to 1n (
The diversity reception signal received with n is a natural number is
Passes through bandpass filters 21 to 2n to low noise amplifiers 31 to 3n
supplied to The received signals amplified by the low noise amplifiers 31 to 3n are converted to intermediate frequencies by reception frequency converters 41 to 4n. The frequency-converted received signal is supplied to automatic gain control amplifiers 51 to 5n, where automatic gain control is performed. From the automatic gain control amplifiers 51 to 5n when this automatic gain control is performed, the diodes 61 to 6n
The maximum received electric field was detected by detecting and comparing the automatic gain control voltage.
【０００４】0004
【発明が解決しようとする課題】上述した従来の最大受
信電界検出回路では、自動利得制御増幅器５１〜５ｎの
特性の相違いによって自動利得制御電圧にバラツキがあ
り、同じ電圧値でもダイバーシティルートによって受信
電界の大きさが異なることがあり、最大受信電界を正確
に検出できないという問題点がある。[Problems to be Solved by the Invention] In the conventional maximum received electric field detection circuit described above, there are variations in the automatic gain control voltage due to differences in the characteristics of the automatic gain control amplifiers 51 to 5n. There is a problem that the magnitude of the electric field may differ, and the maximum received electric field cannot be detected accurately.
【０００５】本発明は、上記の問題点に鑑みてなされた
もので、自動利得制御増幅器の特性の違いによる受信電
界のバラツキに依存することなく、精度の高い最大受信
電界の検出を行うことを目的とする。The present invention has been made in view of the above-mentioned problems, and it is possible to detect the maximum received electric field with high accuracy without depending on variations in the received electric field due to differences in the characteristics of automatic gain control amplifiers. purpose.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に、本発明の最大受信電界検出回路は、受信されたダイ
バーシティ受信信号を自動利得制御増幅する複数の自動
利得制御増幅器と、自動利得制御増幅器の自動利得制御
電圧をアナログ−デジタル変換する複数のアナログ−デ
ジタル変換器と、ダイバーシティルートによって異なる
受信電界校正カーブが予め書き込んである複数の読取り
専用記憶装置を設け、アナログ−デジタル変換器の出力
を読取り専用記憶装置で校正した後に出力するように構
成されている。Means for Solving the Problems To achieve this object, the maximum received electric field detection circuit of the present invention includes a plurality of automatic gain control amplifiers that automatically gain control amplify a received diversity reception signal, and an automatic gain control A plurality of analog-to-digital converters for analog-to-digital conversion of the automatic gain control voltage of the amplifier and a plurality of read-only storage devices in which received electric field calibration curves that differ depending on the diversity route are written in advance are provided, and the output of the analog-to-digital converter is is configured to be output after being calibrated in a read-only storage device.
【０００７】[0007]
【作用】上記構成の最大受信電界検出回路においては、
ダイバーシティルートによって異なる受信電界を、読取
り専用記憶装置によって校正して出力し、校正した後に
比較検出することで、精度の高い最大受信電界の検出を
行う。[Operation] In the maximum received electric field detection circuit with the above configuration,
The received electric field, which differs depending on the diversity route, is calibrated and outputted using a read-only storage device, and the maximum received electric field is detected with high accuracy by comparing and detecting after the calibration.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１は、本発明による最大受信電界検出回路の一
実施例を示すブロック構成図である。Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. FIG. 1 is a block diagram showing an embodiment of a maximum received electric field detection circuit according to the present invention.
【０００９】図１において、受信アンテナ１１〜１ｎ（
ｎは自然数）で受信されたダイバーシティ受信信号は、
帯域ろ波器２１〜２ｎを通って低雑音増幅器３１〜３ｎ
に供給される。低雑音増幅器３１〜３ｎによって増幅さ
れた受信信号は、受信周波数変換器４１〜４ｎによって
中間周波数に変換される。周波数変換された受信信号は
自動利得制御増幅器５１〜５ｎに供給され、自動利得制
御が行われる。In FIG. 1, receiving antennas 11 to 1n (
The diversity reception signal received with n is a natural number is
Passes through bandpass filters 21 to 2n to low noise amplifiers 31 to 3n
supplied to The received signals amplified by the low noise amplifiers 31 to 3n are converted to intermediate frequencies by reception frequency converters 41 to 4n. The frequency-converted received signal is supplied to automatic gain control amplifiers 51 to 5n, where automatic gain control is performed.
【００１０】この自動利得制御が行われるときの自動利
得制御増幅器５１〜５ｎから、アナログ−デジタル変換
器７１〜７ｎによって自動利得制御電圧がアナログ−デ
ジタル変換されて読取り専用記憶装置８１〜８ｎに供給
される。読取り専用記憶装置８１〜８ｎには、ダイバー
シティルートによって異なる受信電界校正カーブが予め
書き込んである。従って、読取り専用記憶装置８１〜８
ｎからは校正された受信電界強度が得られ、これを最大
受信電界検出器９１で検出し比較することによって最大
受信電界が検出される。When this automatic gain control is performed, automatic gain control voltages are converted from analog to digital by analog-to-digital converters 71 to 7n from the automatic gain control amplifiers 51 to 5n and supplied to read-only storage devices 81 to 8n. be done. Reception electric field calibration curves that differ depending on the diversity route are written in advance in the read-only storage devices 81 to 8n. Therefore, read-only storage devices 81-8
A calibrated received electric field strength is obtained from n, and by detecting and comparing this with a maximum received electric field detector 91, the maximum received electric field is detected.
【００１１】[0011]
【発明の効果】以上のように、本発明の最大受信電界検
出回路によれば、自動利得制御増幅器の特性の違いによ
る受信電界のバラツキがなくなり、精度の高い最大受信
電界の検出が可能となる。[Effects of the Invention] As described above, according to the maximum received electric field detection circuit of the present invention, variations in the received electric field due to differences in the characteristics of automatic gain control amplifiers are eliminated, and the maximum received electric field can be detected with high accuracy. .
【図１】本発明による最大受信電界検出回路の一実施例
を示すブロック構成図である。FIG. 1 is a block diagram showing an embodiment of a maximum received electric field detection circuit according to the present invention.
【図２】従来の最大受信電界検出回路の一例を示すブロ
ック構成図である。FIG. 2 is a block configuration diagram showing an example of a conventional maximum received electric field detection circuit.
１１〜１ｎ 受信アンテナ
２１〜２ｎ 帯域ろ波器
３１〜３ｎ 低雑音増幅器
４１〜４ｎ 受信周波数変換器
５１〜５ｎ 自動利得制御増幅器
７１〜７ｎ アナログ−デジタル変換器８１〜８ｎ
読取り専用記憶装置11-1n Reception antennas 21-2n Bandpass filters 31-3n Low-noise amplifiers 41-4n Reception frequency converters 51-5n Automatic gain control amplifiers 71-7n Analog-digital converters 81-8n
read-only storage
Claims (1)
自動利得制御増幅する複数の自動利得制御増幅器と、前
記自動利得制御増幅器の自動利得制御電圧をアナログ−
デジタル変換する複数のアナログ−デジタル変換器と、
ダイバーシティルートによって異なる受信電界校正カー
ブが予め書き込んである複数の読取り専用記憶装置を具
備し、前記アナログ−デジタル変換器の出力を前記読取
り専用記憶装置で校正した後に出力することを特徴とす
る最大受信電界検出回路。1. A plurality of automatic gain control amplifiers for automatic gain control amplification of received diversity reception signals, and automatic gain control voltages of the automatic gain control amplifiers are analog-amplified.
a plurality of analog-to-digital converters for digital conversion;
Maximum reception characterized by comprising a plurality of read-only storage devices in which reception electric field calibration curves different depending on the diversity route are written in advance, and outputting the output of the analog-to-digital converter after being calibrated with the read-only storage device. Electric field detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3091128A JPH04302543A (en) | 1991-03-29 | 1991-03-29 | Maximum received electric field detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3091128A JPH04302543A (en) | 1991-03-29 | 1991-03-29 | Maximum received electric field detecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04302543A true JPH04302543A (en) | 1992-10-26 |
Family
ID=14017900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3091128A Pending JPH04302543A (en) | 1991-03-29 | 1991-03-29 | Maximum received electric field detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04302543A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003021813A1 (en) * | 2001-08-31 | 2003-03-13 | Sanyo Electric Co., Ltd. | Radio apparatus, method for receiving its signal, method for measuring its filter coefficient, and program for measuring its filter coefficient |
| EP1309093A2 (en) * | 2001-10-31 | 2003-05-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for reducing the effect of AGC switching transients |
-
1991
- 1991-03-29 JP JP3091128A patent/JPH04302543A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003021813A1 (en) * | 2001-08-31 | 2003-03-13 | Sanyo Electric Co., Ltd. | Radio apparatus, method for receiving its signal, method for measuring its filter coefficient, and program for measuring its filter coefficient |
| US7110795B2 (en) | 2001-08-31 | 2006-09-19 | Sanyo Electric Co., Ltd. | Radio apparatus, method for receiving its signal, method for measuring its filter coefficient, and program for measuring its filter coefficient |
| EP1309093A2 (en) * | 2001-10-31 | 2003-05-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for reducing the effect of AGC switching transients |
| EP1309093A3 (en) * | 2001-10-31 | 2004-10-27 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for reducing the effect of AGC switching transients |
| US6963733B2 (en) | 2001-10-31 | 2005-11-08 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for reducing the effect of AGC switching transients |
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