PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ
At present, the overload problem of pulsed radar receivers of signals reflected from targets is particularly relevant, which is caused by the appearance of new types of radio engineering systems for various purposes. To protect amplifiers against overload, a number of methods are used: automatic gai...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Akademperiodyka
2018-03-01
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| Series: | Радиофизика и электроника |
| Subjects: | |
| Online Access: | http://re-journal.org.ua/sites/default/files/file_attach/2018-1/3.pdf |
| _version_ | 1818488648446771200 |
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| author | I. M. Mytsenko D. D. Khalameyda |
| author_facet | I. M. Mytsenko D. D. Khalameyda |
| author_sort | I. M. Mytsenko |
| collection | DOAJ |
| description | At present, the overload problem of pulsed radar receivers of signals reflected from targets is particularly relevant, which is caused by the appearance of new types of radio engineering systems for various purposes. To protect amplifiers against overload, a number of methods are used: automatic gain control (AGC) depending on the level of the input signal, separation of the dynamic range into parts and multichannel amplification, the usage of amplifiers with a logarithmic amplitude characteristic, etc. Good results are obtained by a combination of logarithmic gain and signal AGC. The paper describes a pulsed logarithmic amplifier with inertial automatic adjustment of the signal gain factor, operating in the frequency range from 1 MHz to 8 GHz. The functional and the principal electrical circuits are shown. A small-scale experimental model of the device was developed using a modern element base which greatly expanded the possibilities of its application. The physical basis for selecting the necessary bandwidth, which allows avoiding the distortion of radio pulses spectra and the dynamic mode of operation of the inertial AGC, is considered. Experimentally obtained amplitude characteristics are given. The parameters of the layout are as follows: the gain factor K0 in the linear section ~53 dB; the dynamic range of input signals ~55 dB; input and output resistance Rin » Rout = 50 Ohm; supply voltage ±12 V (consumption current of 100 mA), ±5 V (consumption current of 20 mA) |
| first_indexed | 2024-12-10T16:53:55Z |
| format | Article |
| id | doaj.art-f7ee776b038940748d4be27329fa7e38 |
| institution | Directory Open Access Journal |
| issn | 1028-821X 2415-3400 |
| language | English |
| last_indexed | 2024-12-10T16:53:55Z |
| publishDate | 2018-03-01 |
| publisher | Akademperiodyka |
| record_format | Article |
| series | Радиофизика и электроника |
| spelling | doaj.art-f7ee776b038940748d4be27329fa7e382022-12-22T01:40:49ZengAkademperiodykaРадиофизика и электроника1028-821X2415-34002018-03-0123149https://doi.org/10.15407/rej2018.01.004PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZI. M. Mytsenko0D. D. Khalameyda1O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of UkraineO. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of UkraineAt present, the overload problem of pulsed radar receivers of signals reflected from targets is particularly relevant, which is caused by the appearance of new types of radio engineering systems for various purposes. To protect amplifiers against overload, a number of methods are used: automatic gain control (AGC) depending on the level of the input signal, separation of the dynamic range into parts and multichannel amplification, the usage of amplifiers with a logarithmic amplitude characteristic, etc. Good results are obtained by a combination of logarithmic gain and signal AGC. The paper describes a pulsed logarithmic amplifier with inertial automatic adjustment of the signal gain factor, operating in the frequency range from 1 MHz to 8 GHz. The functional and the principal electrical circuits are shown. A small-scale experimental model of the device was developed using a modern element base which greatly expanded the possibilities of its application. The physical basis for selecting the necessary bandwidth, which allows avoiding the distortion of radio pulses spectra and the dynamic mode of operation of the inertial AGC, is considered. Experimentally obtained amplitude characteristics are given. The parameters of the layout are as follows: the gain factor K0 in the linear section ~53 dB; the dynamic range of input signals ~55 dB; input and output resistance Rin » Rout = 50 Ohm; supply voltage ±12 V (consumption current of 100 mA), ±5 V (consumption current of 20 mA)http://re-journal.org.ua/sites/default/files/file_attach/2018-1/3.pdfautomatic gain controlpulse logarithmic amplifier |
| spellingShingle | I. M. Mytsenko D. D. Khalameyda PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ Радиофизика и электроника automatic gain control pulse logarithmic amplifier |
| title | PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ |
| title_full | PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ |
| title_fullStr | PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ |
| title_full_unstemmed | PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ |
| title_short | PULSE LOGARITHMIC AMPLIFIER WITH AUTOMATIC ADJUSTMENT OF AMPLIFICATION IN THE FREQUENCY RANGE FROM 1 MHZ TO 8 GHZ |
| title_sort | pulse logarithmic amplifier with automatic adjustment of amplification in the frequency range from 1 mhz to 8 ghz |
| topic | automatic gain control pulse logarithmic amplifier |
| url | http://re-journal.org.ua/sites/default/files/file_attach/2018-1/3.pdf |
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