Dongguan Jie Tong Electronic Instrument Co., Ltd. 
 Tel: 13760331089 weeks students 

 Contact QQ: 1511158498 
 T: 0769-82086182 
 F: 0769-82086182 
 Zip Code: 523710 
 Address: Hung Lai Yuen Road, Zhenjiang Tangxia Garden 3 6F 



 Main purposes: 
 LCR bridge HP4191A: 
 Impedance of the test material Z, the admittance Y, inductance L, resistance R, the dielectric loss D, quality factor 
 RF impedance measuring instruments Verification System 
 Verification Scheme of RF 
 Impedance Measuring Instruments JJG 2011-87 
 Instead of: high frequency impedance value transfer system 
 RF impedance measuring instruments Verification System 
 The test system is suitable for injection (high) frequency lumped parameter impedance measurement apparatus (ie, detection of 20kHz-1GHz band R, L, C elements and electromagnetic properties of materials, equipment and measuring instruments of all things, standard parts), provides for radio frequency (used also known as high-frequency) impedance of the lumped parameter approach traceability, procedures and measuring instruments passing verification method. 
 First, the baseline measurement apparatus 
 1, the high impedance state lumped parameter measurement apparatus is the basis for reproduction and preservation of 20kHz-1000GHz high frequency impedance values ??(including the complex dielectric permittivity and complex permeability of soft magnetic materials) of the metering equipment and measuring tools. 
 2 shot (high) frequency lumped parameter impedance measurement apparatus base, including: 
 Impedance of air dielectric coaxial 2.1 benchmark, its resistance value by the coaxial line dimensions and electromagnetic properties of materials obtained by the theoretical calculation. It is the reflection coefficient for the calibration by using the principle of high frequency impedance of precision measuring devices. Air dielectric coaxial line is also the microwave impedance of national benchmarks, the test system moving with it, is conducive to fire (high) frequency, microwave impedance value of unity. In (1-1000) MHz band, the technical indicators are: 
 Reflection coefficient modulus | г |: 1.000 ± 0.002; phase angle: ± 180 ° ± 0.5 °. 
 2.2 The high frequency impedance high precision resistance measurement device, which is the use of high frequency from the U.S. introduction of the HP4191A impedance analyzer, after demonstration of accuracy, ensuring high-frequency lumped parameter impedance measurement of performance of the following: 
 Frequency: (1-1000) MHz 
 Reflection coefficient modulus | г |: 1.000 ± (0.003-0.007) 
 Phase angle θ: ± 180 ° ± 0.5 °; 
 Impedance modulus | Z |: 1Ω-10kΩ ± (0.5-10)% 
 Capacitor C: 10pF-100nF ± (0.2-10)%; 
 Inductance L: 10nH-100μH ± (0.2-10)% 
 Loss: tgδ (D) 0.001-0.5 ± <(0.002-0.05) 
 Second, the high frequency impedance of the standard lumped parameter 
 3, lumped parameter impedance standards include: 
 3.1 The high frequency impedance standard parts 50Ω, 0Ω, 0S. Their base by the state law through direct transfer of money than the technical characteristics are as follows: 
 50Ω: | г | ≤ 0.0025; 0Ω: residual resistance is less than 2mΩ; 0S: edge capacitance 0.080pF. 
 Calibration of these standard parts to design according to the principle of voltage and current than the high-frequency impedance analyzer, high-frequency LCR table and other general high-frequency impedance measurement equipment (calibration need to use the DC and low frequency impedance standards to Peter.) 50Ω impedance simulated by the loss of pieces of pieces composed of Q value calibration, tgδ value of the other standard equipment. 
 3.2 high frequency, low-frequency impedance analyzer. These are commercial products with high accuracy impedance measurement instruments, also used as a measurement standard equipment for calibration standards for low-impedance measuring accuracy. The technical indicators: