SU711488A1

SU711488A1 - Shf meter

Info

Publication number: SU711488A1
Application number: SU772447282A
Authority: SU
Inventors: Арнольд Ефимович Олейник; Владимир Тимофеевич Пустовой; Леонид Григорьевич Цыпкун
Original assignee: Предприятие П/Я А-3361
Priority date: 1977-01-26
Filing date: 1977-01-26
Publication date: 1980-01-25

Description

Изобретение относится к радиоизмеритёльной технике.The invention relates to radio metering technology.

Известно устройство для измерения сверхвысоких частот, содержащее два входных смесителя с общим входом, ⁵электронно-счетный частотомер, первый смеситель и блок сравнения [1].A device for measuring ultra-high frequencies is known, comprising two input mixers with a common input, ^{5 an} electronically counted frequency meter, a first mixer and a comparison unit [1].

Однако при использовании этого устройства процесс измерения является . сложным и требует большего времени. ^υЦель изобретения - упрощение процесса измерения и уменьшение времени измерения.However, when using this device, the measurement process is. complicated and takes more time. ^υ The purpose of the invention is to simplify the measurement process and reduce the measurement time.

Для этого в устройство для измерения сверхвысоких частот, содержащее 15 два входных смесителя с общим входом, электронно-счетный частотомер, первый смеситель и блок сравнения, введены коммутатор, который включен на входе электронно-счетного частотомера, первый, фильтр нижних частот и первый полосовый фильтр, подключенные к выходу первого входного смесителя, второй полосовой фильтр и второй фильтр нижних частот, подключенные к выходу второго смесителя, второй смеситель,» входы которого соответственно соединены а выходами фильтров нижних частот, а выход подключен к одному из входов блока сравнения, к другому входу которого подключен выход первого смесителя, входами которого являются выходы полосовых фильтров, при этом выходы первого фильтра нижних частот, первого полосового фильтра, первого и второго смесителей и блока сравнения подключены к соответствующим входам коммутатора.To this end, a device for measuring ultra-high frequencies, comprising 15 two input mixers with a common input, an electron-counting frequency meter, a first mixer and a comparison unit, has a switch that is connected to the input of an electron-counting frequency meter, a first, a low-pass filter and a first band-pass filter connected to the output of the first input mixer, the second bandpass filter and the second low-pass filter, connected to the output of the second mixer, the second mixer, the inputs of which are respectively connected to the outputs of the lower filters frequencies, and the output is connected to one of the inputs of the comparison unit, to the other input of which the output of the first mixer is connected, the inputs of which are the outputs of the bandpass filters, while the outputs of the first lowpass filter, the first bandpass filter, the first and second mixers and the comparison unit are connected to the corresponding switch inputs.

На чертеже приведена функциональная схема устройства.The drawing shows a functional diagram of the device.

Устройство для измерения сверхвысоких частот содержит два входных смесителя 1 и 2 с общим входом, элект ронно-счетный частотомер 3, первый смеситель 4, блок 5 сравнения, коммутатор 6, который включен на входе электронно-счетного частотомера 3, первый фильтр 7 нижних частот и первый полосоьый фильтр 8, подключенные к выходу первого входного смесителя 1, второй полосовой фильтр 9 и второй фильтр 10.нижних частот, подключенные к выходу второго входного смесителя “ 2, и второй смеситель 11, входы которого соответственно соединены с выходами фильтров. 7 и 10 нижних частот, а выход подключен к одному из входов блока 5 сравнения, к другому входу которого подключен выход первогоThe device for measuring microwave frequencies contains two input mixers 1 and 2 with a common input, an electronically counted frequency meter 3, a first mixer 4, a comparison unit 5, a switch 6, which is included at the input of an electronically counted frequency meter 3, a first low-pass filter 7 and the first bandpass filter 8 connected to the output of the first input mixer 1, the second bandpass filter 9 and the second low-pass filter 10. connected to the output of the second input mixer “2, and the second mixer 11, the inputs of which are respectively connected to the outputs of the filters. 7 and 10 low frequencies, and the output is connected to one of the inputs of the comparison unit 5, to the other input of which the output of the first

На второй вход входfo - опорсмесителя 4, входами которого являются выходы полосовых фильтров 8 и 9, при этом выходы первого фильтра 7 нижних частот, первого полосового фильтра 8, первого и второго смесителей 4 и 11 и блока 5 сравнения подключены к соответствующим входам коммутатора 6.At the second input, the input is an input-mixer 4, the inputs of which are the outputs of the bandpass filters 8 and 9, while the outputs of the first lowpass filter 7, the first bandpass filter 8, the first and second mixers 4 and 11, and the comparison unit 5 are connected to the corresponding inputs of the switch 6.

Устройство работает следующим образом.The device operates as follows.

На входы входных смесителей 1, 2 поступает сигнал с частотой f, подлежащей измерению ного смесителя 1 поступает сетка частот с интервалом fо , где ная частота, а на второй вход входного смесителя 2 - сетка частот с интервалом (f₀ + zxf) , где Δί « foНа выходе входного смесителя 1 присутствуют -сигналы с частотами * (± f ± nfj , где η-целые числа. На выходе входного смесителя 2 присутствуют сигналы с частотами [±f±n(f₀ + af) ] . На выходе фильтра 7 нижних частот, имеющего частоту среда f_o/2, присутствует сигнал с частотой (f — n(fo) , если (f—nifo) < (fo/2, или (ni+i-fo ~ f) г если f₀ > (f - nt f₀) > f₀/2.At the inputs of the input mixers 1, 2, a signal with a frequency f arrives, which is to be measured by the mixer 1, a frequency grid with an interval fо is received, where is the frequency, and the second input of an input mixer 2 receives a frequency grid with an interval (f ₀ + zxf), where Δί "Fo At the output of the input mixer 1 there are β signals with frequencies * (± f ± nfj, where η are integers. At the output of the input mixer 2 there are signals with frequencies [± f ± n (f ₀ + af)]. At the output of filter 7 low frequencies, having a medium frequency f _o / 2, there is a signal with a frequency (f - n (fo) if (f - nifo) <(fo / 2, or (ni + i-fo ~ f) g if f ₀ > (f - nt f ₀ )> f _0/2 .

На выходе полосового фильтра 8, имеющего полосу пропускания от fo/2 до fo присутствует сигнал с частотой (πϊ.₊₁ fo- f ), если (f — nif₀)4 ‘<f_c>/2 или (f — nif₀) _r если f₀>(f —At the output of the bandpass filter 8, having a passband from fo / 2 to fo, there is a signal with a frequency (πϊ. ₊₁ fo-f) if (f - nif ₀ ) 4 '<f _c > / 2 or (f - nif ₀ ) _r if f ₀ > (f -

- ntfo)> fo/2.- ntfo)> fo / 2.

На выходе фильтра 10' нижних частот, Имеющего частоту срез a fo^riniajrAf /2, где псгнц- максимальное значение п, присутствует сигнал с частотой [ f -nt (fo + Af) ) , если [f - пр ’(fo + Af) ]<.fo+Hmax'Af/2 г или [ni.+^ (f₀ + A f) - fl, если (fo + n_rpa_x · Af) > If ~ ni (fo + Af) IT’ > fo + nni_Qx-4f/2.At the output of the low-pass filter 10 ', having a cutoff frequency a fo ^ riniajrAf / 2, where psgc is the maximum value of n, there is a signal with the frequency [f -nt (fo + Af)) if [f - pr' (fo + Af )] <. fo + Hmax'Af / 2 g or [ni. + ^ (f ₀ + A f) - fl if (fo + n _r pa _x · Af)> If ~ ni (fo + Af) IT '> fo + nni _Q x-4f / 2.

На выходе полосового фильтра 9, имеющего полосу пропускания от io^+rhnax Δ f/2 до (fo + nmax’Af) , присутствует сигнал с частотой. [n_VH(fo ⁺ A f) -fl, если [f - n< (f0 + a f) 1 <ib⁺RmaxAf/2или [f - П4 (fo + Af)l, если (¾)> >[f — ni (f0 + A f) 1 ^,nmox Af / 2 »At the output of the bandpass filter 9, having a passband from io ^{+ r} hnax Δ f / 2 to (fo + nmax'Af), a signal with a frequency is present. [n _V H (fo ⁺ A f) -fl if [f - n <(f0 + af) 1 <ib ⁺ RmaxAf / 2 or [f - П4 (fo + Af) l if (¾)>> [f - ni (f0 + A f) 1 ^{, n} mox Af / 2 ”

На выходе смесителя 4 присутствует сигнал с частотой η^-Δί, если (f — ηΐ ζ,) <fo/2, или nl-Af, если f₀ > (f - n.i f₀) > fo/2.At the output of mixer 4, there is a signal with a frequency η ^ -Δί if (f - ηΐ ζ,) <fo / 2, or nl-Af if f ₀ > (f - ni f ₀ )> fo / 2.

На выходе смесителя 11 присутствует сигнал с частотой η₄·Δί, если, (f - ni fo) < fo/2, или η<+ρΔί , если f₀ > f — η| f- 7 fo/2.At the output of mixer 11 there is a signal with a frequency η ₄ · Δί if (f - ni fo) <fo / 2, or η <+ ρΔί if f ₀ > f - η | f- 7 fo / 2.

Блок S сравнения и коммутатор ь построены так, что если частота сигнала с выхода смесителя 4 больше частоты сигнала с выхода смесителя 11, то на вход первой декады электрон, но-счетного частотомера 3 с выхода э фильтра 7 нижних частот поступает сигнал с частотой (f — ni f_c ) ,' a на вход m-ой декады электронно-счет' ного частотомера 3 со смесителя 11 поступает сигнал с частотой ni fo .The comparison unit S and the switch b are constructed so that if the frequency of the signal from the output of the mixer 4 is greater than the frequency of the signal from the output of the mixer 11, then the input of the first decade of the electron, but counting frequency meter 3 from the output of the low-pass filter 7 receives a signal with a frequency (f - ni f _c ), 'a signal with the frequency ni fo is received at the input of the mth decade of the electronically counted frequency counter 3 from mixer 11.

Если частота сигнала с выхода смесителя 4 меньше частоты сигнала с выхода смесителя 11, то на вход первой декады электронно-счетного 'частотомера 3 с выхода полосового фильтра 8 поступает сигнал с частотой (f—п< f₀), а на вход m-ой декады электронно-счетного частотомера 3 с выхода смесителя 4 поступает сигнал с частотой nt fc .If the frequency of the signal from the output of the mixer 4 is less than the frequency of the signal from the output of the mixer 11, then a signal with a frequency (f — n <f ₀ ) is received at the input of the first decade of the electronically counting frequency meter 3 from the output of the band-pass filter 8, and the input m decades of electronic counting frequency counter 3 from the output of the mixer 4 receives a signal with a frequency nt fc.

Предлагаемое устройство,по сравнению с прототипом,позволяет упростить процесс измерения и уменьшить время измерения.The proposed device, in comparison with the prototype, allows to simplify the measurement process and reduce the measurement time.

Claims

This invention relates to a radio measuring technique. A device for measuring ultra-high frequencies is known, which contains two input mixers with a common input, an electron-counting frequency counter, a first mixer and a comparator unit 1. However, when using this device, the measurement process is complex and takes a long time. The purpose of the invention is to simplify the measurement process and reduce the measurement time. To do this, a device for measuring ultra-high frequencies, containing two input mixers with a common input, an electron-counting frequency meter, a first mixer and a comparison unit, is introduced a switch that is connected at the input of an electron-counting frequency meter, the first, a low-pass filter and the first band filter connected to the output of the first input mixer, the second band-pass filter and the second low-pass filter connected to the output of the second mixer, the second mixer, the inputs of which are respectively connected to the outputs of the filters. stot, and an output connected to one input of the comparison unit. To the other input of which the output of the first mixer is connected, input # 1 of which are the outputs of the bandpass filters, while the outputs of the first low-pass filter, the first band-pass filter, the first and second mixers and the comparison unit. connected to the corresponding inputs of the switch. The drawing shows a functional diagram of the device. The device for measuring ultra-high frequencies contains two input mixers 1 and 2 with a common input, an electron-counting frequency meter 3, the first mixer 4, a comparison unit 5, a switch 6 that is connected at the input of the electron-counting frequency meter 3, the first low-pass filter 7 and the first a band pass filter 8 connected to the output of the first input mixer 1, a second band pass filter 9 and a second low pass filter 10. connected to the output of the second input mixer 2, and a second mixer 11 whose inputs are respectively connected to the outputs of the filters. 7 and 10 are low frequencies, and the output is connected to one of the inputs of the comparison unit 5, to the other input of which the output of the first mixer 4 is connected, the inputs of which are the outputs of the bandpass filters 8 and the outputs of the first lowpass filter 7, the first bandpass filter 8, the first and second mixers 4 and 11 and the comparison unit 5 are connected to the corresponding inputs of the switch 6. The device operates as follows. The inputs of the input mixers 1, 2 receives a signal with a frequency f; subject to measurement. At the second input of the input mixer i, a grid of frequencies arrives with an interval of fо, where fo is the frequency reference, and a second input of the input mixer 2 is a grid of frequencies with an interval (fQ + d), where d "foOn the input of the mixer 1, there are signals with frequencies (± f ± nf), where n-integers. At the output of the input mixer 2 there are signals with frequencies ± f ± n (o + d). At the output of the low-pass filter 7, having a frequency of medium o / 2, there is a signal with a frequency (f - nifo) t if () Cfo / 2, or (pg + rfo - f), if f o (f - nl fo) fo / 2. At the output of the bandpass filter 8, having a bandwidth from fo / 2 to fo, a signal is present with a part of that (fo-f) if (f - nifo) or (f -nifo), if - nlfo) fo / 2. At the output of the filter 10, the lower parts have the cut-off frequency fo nftiax-Af / g, where P | gp) (maximum value n, there is a signal with frequency f - ni (fo + uf)) if f - nii (fo + Af). fo + nmax-Af / 5 f or ni, + / i {fo + l f) - f 1 if (fo + nrnux uf) Cf (fo + uf fo + Ptol-D / 2. Ha output of the band-pass filter 9, having a bandwidth from fo + nmQvAf / 2 to (fo + nmax-sf) / A signal is present with the frequency nv4-vi (fo Af) -f, if f - nt (fo + D f) o nmxxAf / 2 or f - five ( fo + d), (, xf - ni (fo + Af)) fomoxuf / 2 At the output of mixer 4, there is a signal with a frequency if (f - ni fo / 2, or n / i-uf, if fo (f - ni fo) fo / 2. Ha output mixer 11 signal is present with a frequency if, (f - ni fft) fo / 2, or if fo f - n f - 7 fo /

2. Comparison unit 5 and the switch are sharply so that if the frequency of the ignition signal from the output of mixer 4 is greater than the signal from the output of mixer 1, then the input of the first decade of the electron-counting frequency meter 3 from the output of the low 7 frequencies will receive a signal with a frequency (f - pii f ), and the input of the tenth decade of the electron-counting frequency meter 3 from mixer 11 receives a signal with a frequency n i fo. If the frequency of the signal from the output of the mixer 4 is less than the frequency of the signal from the output of the mixer 11, then the input of the first decade of the electron-counting frequency meter 3 from the output of the band-pass filter 8 receives a signal with frequency (fn fo), and the input of the second decade of the electron-counting frequency meter 3, the output of the mixer 4 receives a signal with a frequency p i fo. The proposed device, in comparison with the prototype, allows to simplify the Iomerenia process and reduce the measurement time. Apparatus of the Invention A device for measuring ultra-high frequencies, comprising two input mixers with a common input, an electron-counting frequency meter, a first mixer and a comparator unit, which has been inserted into the switchboard in order to simplify the measurement process and reduce the measurement time, a switch Which is included at the input of the electron-counting frequency meter. the first low-pass filter and the first band-pass filter connected to the output of the first input mixer, the second band-pass filter and the second low-pass filter connected to the output of the second input mixer, the second mixer whose inputs are respectively connected to the low-pass filter outputs and the output connected to one from the inputs of the comparator unit, to the other input of which the output of the first mixer is connected, the inputs of which are subscale filters, while the outputs of the first low-pass filter are persoro bandpass filter the tra, the first and second mixers, and the comparison unit are connected to the corresponding inputs of the switch. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 319906, cl. G 01 R 23/00, 1970 (prototype).