GB/T 44766-2024Microwave circuits—Measuring methods for limiter (English PDF)
微波电路 限幅器测试方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 26, 2024
Implementation date
May 1, 2025
Scope
GB/T 44766-2024 is the English-translated version of 微波电路 限幅器测试方法.
GB/T 44766-2024 is the Chinese national standard covering the bench measurement of a microwave limiter — the test conditions and instruments, the insertion loss and its flatness, the input and output standing wave ratios, the limiting level, the peak and flat leakage power and the peak energy that get through to whatever sits behind the limiter, the power handling, the 1 dB compression point, the response and recovery times, the reflected power and the third order intermodulation. It covers passive, semi-active and active limiters. First edition, under the Ministry of Industry and Information Technology. In force from 1 May 2025. Issued on 26 October 2024, it has been in force since 1 May 2025.
Document preview — GB/T 44766-2024
National Standard of the People's Republic of China
- ICS
- 31.200
- Classification
- L 58
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- PrefaceIII
- 1 Scope1
- 2 Normative references1
- 3 Terms and Definitions1
- 4 Test conditions, instruments and equipment2
- 4.1 Test Condition2
- 4.2 Test instruments and equipment3
- 4.3 Notes3
- 5 parameter test3
- 5.1 Insertion Loss (Li)3
- 5.2 Insertion loss flatness (deltaLi)5
- 5.3 Voltage Standing Wave Ratio (VSWRi, VSWRo)5
- 5.4 Limiting Level (Plim)6
- 5.5 Peak leakage power (Pleak(spike))7
- 5.6 Flat Leakage Power (Pleak(flat))8
- 5.7 Peak Energy (Wl)8
- 5.8 Power handling (Pcwm, Ppm)9
- 5.9 1dB compression output power (Po(1dB))10
- 5.10 Response Time (tres)11
- 5.11 Recovery time (tr)12
- 5.12 Reflected power (Pr)13
- 5.13 Third Order Intermodulation (IP3)14
- 5.14 Third-order intercept point power (POIP3)15
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee for Standardization of Integrated Circuits (SAC/TC599).
This document was drafted by: China Electronics Technology Group Corporation No. 55 Research Institute, China Electronics Technology Standardization Institute, Nanjing National Museum Electronics Co., Ltd., and the 13th Research Institute of China Electronics Technology Group Corporation.
The main drafters of this document are Du Xiaofan, Zhou Guanghui, Tang Shuo, Xiang Hu, Deng Shixiong, and Wu Weili.
Microwave Circuit Limiter Test Method
1 Scope
This document describes the test methods for the main electrical parameters of microwave circuit limiters.
This document applies to microwave circuit limiters, including passive limiters, semi-active limiters, active limiters, etc.
2 Normative references
GB/T 17573-1998
IEC 747
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Insertion loss
Li The ratio of input power to output power when the limiter is working with small signals.
3.2 deltaLi
The difference between the maximum and minimum insertion loss within the operating frequency band when the limiter is working with a small signal.
3.3 VSWR
On a uniform lossless transmission line, the ratio of the maximum voltage amplitude to the minimum voltage amplitude.
The voltage standing wave ratio VSWRi at the output end is the output voltage standing wave ratio VSWRo.
3.4 Plim
The maximum output power of the limiter within the specified input power range.
3.5 spikeleakagepower
Under pulse working conditions, the maximum output power generated at the moment when a high-power signal is input to the limiter.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.
Referenced standards
Normative references
GB/T 17573-1998 · IEC 747
Editions of GB/T 44766
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 44766-2024 | Microwave circuits - Measuring methods for limiter | current edition | Current |
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