SU708262A1 - Arrangement for measuring directivity coefficient of directional coupler - Google Patents

Arrangement for measuring directivity coefficient of directional coupler Download PDF

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Publication number
SU708262A1
SU708262A1 SU762355686A SU2355686A SU708262A1 SU 708262 A1 SU708262 A1 SU 708262A1 SU 762355686 A SU762355686 A SU 762355686A SU 2355686 A SU2355686 A SU 2355686A SU 708262 A1 SU708262 A1 SU 708262A1
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SU
USSR - Soviet Union
Prior art keywords
directional coupler
attenuation
attenuator
switch
generator
Prior art date
Application number
SU762355686A
Other languages
Russian (ru)
Inventor
Евгений Анатольевич Власов
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Предприятие П/Я А-7544
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Application filed by Предприятие П/Я А-7544 filed Critical Предприятие П/Я А-7544
Priority to SU762355686A priority Critical patent/SU708262A1/en
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Publication of SU708262A1 publication Critical patent/SU708262A1/en

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Description

(54) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ КОЭФФИЦИЕНТА(54) DEVICE FOR MEASUREMENT OF COEFFICIENT

Claims (1)

НАПРАВЛЕННОСТИ НАПРАВЛЕННОГО ОТВЕТВИТЕЛЯ ключател  3 проходит на согласованную нагрузку 4 и. эассеиваетс . Затухание основного сигнала в тракте генератор 1-индикатор 5 составл ет К к. , где К„„ , где К коэффициент направленности направле ного ответвител  6; коэффициент св зи вторичного канала напра ленного ответвител . За счет конечной величины разв зк в переключателе нар ду с основньм присутствует паразитный сигнал. Его затухание к KP+D, к, где D - затухание аттенюатора PCadl разв зка между скоммутированньми каналами в переключателе 3 . В этом случае превышение основно го сигнала над паразитным составл е .+ 0 К.5,-К„-Ксь Кр-К ч- D И может быть достаточно большим за счет подбора ЕЧ . В режиме пр мого включени  напра ленного ответвител  6, когда он реа гирует на падающую волну, сигнал с генератора 1 подаетс  через контакт 3/2, 3/3 :переключател  3 (на чертеж показано tuTpTaxc) и аттенюатор 2 на направленный;ответвитель. Затухание основного сигнала при этом в тракте генератор 1 - индикатор 5 составл ет К2 где D2 - новое значение затухани  аттенюатора 2 Затухание паразитного сигнала KZ Кр- -Ксв- -К„. ,JA Превышение основного сигнала над паразитным Z у. При одинаковых показани х индикатора 5 в обоих режимах, что обеспечиваетс  за счет регулировки затухани  Da. аттенюатора 2, К К, т. е. D2-«-Kcfe или KH Dg, В этсм случае Кр, т, е. получаетс , достаточно большое превышение основного сигнала над пар зитным (у серийных переключателей К обычно не менее 20) , что повышает точность измерений. Формула изобретени  Устройство дл  измерени  коэффициента направленности направленного ответвител , содержащее генератор, аттенюатор и переключатель, к первому контакту которого подключена согласованна  нагрузка, а также индикатор , ко входу которого подключаетс  выход вторичного канала исследуемого направленного ответвител , отличающеес  тем, что, с . целью повышени  точности измерений, выход генератора подключен ко второму контакту переключател , а между третьим и четвертым контактами включены последовательно соединенные аттенюатор и основной канал исследуемого направленного ответвител . Источники информации, прин тые во внимание при экспертизе 1. Авторское свидетельство СССР 171032, кл. Н 01 Р 5/14, 1965 (прототип) .DIRECTIONS OF THE DIRECTED TILLER The key switch 3 passes on the agreed load 4 and. dissipated. Attenuation of the main signal in the path of the generator 1-indicator 5 is K k., Where K is „, where K is the directivity factor of the directional coupler 6; the coupling ratio of the secondary channel of the direct coupler. Due to the finite magnitude of the demodulation, a parasitic signal is present in the switch along with the main signal. Its attenuation is to KP + D, k, where D is the attenuation of the attenuator PCadl and the separation between the switched channels in switch 3. In this case, the excess of the main signal over the parasitic component is. + 0 К.5, -К „-Кс Кр-К ч-D И can be quite large due to the selection of ECH. In the direct switching mode of the directional coupler 6, when it responds to the incident wave, the signal from generator 1 is fed through contact 3/2, 3/3: switch 3 (the drawing shows tuTpTaxc) and attenuator 2 to the directional coupler. At the same time, the main signal attenuation in the path of the generator 1 - indicator 5 is K2 where D2 is the new attenuation value of the attenuator 2. The attenuation of the parasitic signal KZ Cr-Cs-C. , JA Excess of the main signal over the parasitic Z y. With the same indication of indicator 5 in both modes, this is ensured by adjusting the attenuation Da. Attenuator 2, KK, i.e. D2 - «- Kcfe or KH Dg, In the emsm case of Kp, t, i.e., a sufficiently large excess of the main signal over the pair of signals is obtained (for serial K switches usually not less than 20), which improves measurement accuracy. Claims An apparatus for measuring the directivity of a directional coupler, comprising a generator, an attenuator and a switch, to the first contact of which a matched load is connected, as well as an indicator, to the input of which the output of the secondary channel of the directional coupler to be investigated, characterized in that, c. In order to improve measurement accuracy, the generator output is connected to the second switch contact, and between the third and fourth contacts are connected in series the attenuator and the main channel of the directional coupler under study. Sources of information taken into account in the examination 1. USSR author's certificate 171032, cl. H 01 R 5/14, 1965 (prototype).
SU762355686A 1976-05-05 1976-05-05 Arrangement for measuring directivity coefficient of directional coupler SU708262A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762355686A SU708262A1 (en) 1976-05-05 1976-05-05 Arrangement for measuring directivity coefficient of directional coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762355686A SU708262A1 (en) 1976-05-05 1976-05-05 Arrangement for measuring directivity coefficient of directional coupler

Publications (1)

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SU708262A1 true SU708262A1 (en) 1980-01-05

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SU762355686A SU708262A1 (en) 1976-05-05 1976-05-05 Arrangement for measuring directivity coefficient of directional coupler

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113295940A (en) * 2021-04-25 2021-08-24 中国人民解放军陆军工程大学 Approximate estimation method for maximum value of directivity coefficient of equivalent antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113295940A (en) * 2021-04-25 2021-08-24 中国人民解放军陆军工程大学 Approximate estimation method for maximum value of directivity coefficient of equivalent antenna
CN113295940B (en) * 2021-04-25 2022-08-12 中国人民解放军陆军工程大学 Approximate estimation method for maximum value of directivity coefficient of equivalent antenna

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