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Antenna Calibration

Antenna Calibration and Measurement Services

National Institute of Metrology (NIM) http://www.nim.ac.cn/

A-INFO and National Institute of Metrology (NIM) has established long-term partnership to provide antenna accredited & traceable calibration service.

Founded in 1955, NIM is China's national metrology institute and a state-level metrology institute. NIM is member of International Committee of Weights and Measures (CIPM), by signing Mutual recognition Agreement (MRA) w/ all member countries' organization, the Calibration and Measurement Certificates Issued by NIM gets full accredit and traceability.

NIM's quality management system meets the ISO/IEC 17025 requirement. Its Calibration and Measurement Capabilities (CMCs) that are peer reviewed both by China National Accreditation Service for Conformity Assessment (CNAS) and the Asia Pacific Metrology Program (APMP), published in the International Bureau of Weights and Measures (BIPM) Key Comparison Database (KCDB).

Member of International committee of Weight & Measurement – Electronic, Magnetism & RF

Sub No	Comparison identifier	Description	Field	Parameter(s)	Pilot
1	APMP.EM- K4	capacitors	Electricity and Magnetism, Capacitance	Capacitance: 10 pF Frequency: 1592 Hz	Korea KRISS www.kriss.re.kr
2	APMP.EM- K4.1	capacitors	Electricity and Magnetism, Capacitance	Capacitance: 10 pF Frequency: 1592 Hz	Australia NMIA www.measurement.gov.au
3	APMP.EM- S1	capacitors	Electricity and Magnetism, Capacitance	Capacitance: 100 pF, 1 nF; Frequency: 1.592 kHz, 1 kHz	Korea KRISS www.kriss.re.kr
4	APMP.EM- S7	capacitors	Electricity and Magnetism, Capacitance	Capacitance: 100 pF; Frequency: 1.592 kHz, 1 kHz	Australia NMIA www.measurement.gov.au
5	APMP.EM.BIPM- K11	DC voltage, Zener diode	Electricity and Magnetism, DC Voltage and Current	DC voltage: 1.018 V and 10 V	Singapore SPRING Singapore www.spring.gov.sg
6	BIPM.EM- K10.a	DC voltage, Josephson standards	Electricity and Magnetism, DC Voltage and Current	DC voltage: 1.018 V	International BIPM http://www.bipm.org/
7	CCEM- K1	resistance standards	Electricity and Magnetism, Resistance	Resistance: 1 ohm and 10 kilohms	International BIPM http://www.bipm.org/
8	CCEM- K10	Comparison of resistance standards	Electricity and Magnetism, Resistance	Resistance: 100 ohms	Germany PTB www.ptb.de
9	CCEM- K11	AC/DC voltage transfer difference at low voltages	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Voltage: 10 mV and 100 mV Frequency: 1 kHz to 1 MHz	Sweden SP www.sp.se
10	CCEM- K2	Comparison of resistance standards	Electricity and Magnetism, Resistance	Resistance: 10 megohms and 1 gigaohms ； Voltage: 10 V, 50 V, 91 V or 100 V	US NIST www.nist.gov
11	CCEM- K3	Comparison of inductors	Electricity and Magnetism, Inductance	Inductance: 10 mH Frequency: 1 kHz	Germany PTB www.ptb.de
12	CCEM- K4	Comparison of capacitors	Electricity and Magnetism, Capacitance	Capacitance, 10 pF Frequency: 1592 Hz	US NIST www.nist.gov
13	CCEM- K5	AC power at 50/60 Hz	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Power factor: 1.0, 0.5 Lead, 0.5 Lag, 0.0 Lead, 0.0 Lag	US NIST www.nist.gov
14	CCEM- K6.a	Comparison of AC/DC voltage transfer standards	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Voltage: 3 V Frequency: 1 kHz, 20 kHz, 100 kHz and 1 MHz	Germany PTB www.ptb.de
15	CCEM- K6.b	Comparison of AC/DC voltage transfer standards	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Voltage: 500 V to 1000 V Frequency: 50 kHz to 100 kHz	France BNM-LNE www.lne.fr
16	CCEM- K7	AC voltage ratio	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Frequency: 1 kHz	UK NPL www.npl.co.uk
17	CCEM- K8	Comparison of DC voltage ratios	Electricity and Magnetism, DC Voltage and Current	Ratio: 1000 V / 10 V and 100 V / 10 V	Italy IEN www.ien.it
18	CCEM- K9	Comparison of high voltage AC/DC converters	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Voltage: 1000 V, 500 V and 200 V Frequency: 1 kHz, 10 kHz, 20 kHz, 50 kHz and 100 kHz	France BNM-LNE www.lne.fr
19	CCEM.M- K1	Comparison of low frequency magnetic flux density	Electricity and Magnetism, Magnetism	Frequency: DC to 20 kHz	Germany PTB www.ptb.de
20	APMP.EM- K10	Resistance standards	Electricity and Magnetism, Resistance	Resistance: 100 ohms	China NIM www.nim.ac.cn
21	APMP.EM- K8	DC voltage ratios	Electricity and Magnetism, DC Voltage and Current	Ratio: 1000 V / 10 V and 100 V / 10 V	China NIM www.nim.ac.cn
22	APMP.EM- K2	Resistance standards	Electricity and Magnetism, Resistance	Resistance: 10 megohms and 1 gigaohms	Korea KRISS http://www.kriss.re.kr/
23	EURAMET.EM- S36	Calibration of high voltage partial discharge measurement systems	Electricity and Magnetism, High voltage and current	-	Sweden SP www.sp.se
24	APMP.EM- S14	Earth-level DC magnetic flux density	Electricity and Magnetism, Magnetism	-	Vietnam VNIM vmi.gov.vn
25	CCEM.RF- K13.CL	Voltage measurements	Electricity and Magnetism, Radio frequencies	Voltage:1mV Frequency: 30 MHz	Germany PTB www.ptb.de
26	CCEM.RF- K15.CL	Attenuation measurements	Electricity and Magnetism, Radio frequencies	Frequency: 30 MHz	Germany PTB www.ptb.de
27	CCEM.RF- K16.CL	Measurement of reflection coefficient	Electricity and Magnetism, Radio frequencies	Frequency: 500 MHz, 3 GHz and 7 GHz	Germany PTB www.ptb.de
28	CCEM.RF- K19.CL	Attenuation in a 50 ohm coaxial line	Electricity and Magnetism, Radio frequencies	Frequency: 60 MHz and 5 GHz	UK NPL www.npl.co.uk
29	CCEM.RF- K2.W	Noise power in waveguide	Electricity and Magnetism, Radio frequencies	Frequency: 9 GHz, 10.5 GHz and 11.2 GHz	UK NPL www.npl.co.uk
30	CCEM.RF- K20	Measurements of electric field strength	Electricity and Magnetism, Radio frequencies	Frequency: 10 MHz to 1 GHz (13 discrete values among which four were selected for the K: 30 MHz, 100 MHz, 300 MHz, and 900 MHz)	Switzerland METAS www.metas.ch
31	CCEM.RF- K21.F	Comparison of antenna factors	Electricity and Magnetism, Radio frequencies	Frequency: 300 MHz and 900 MHz	UK NPL www.npl.co.uk
32	CCEM.RF- K23.F	Antenna gain	Electricity and Magnetism, Radio frequencies	Frequencies: 12.4 GHz, 15 GHz and 18 GHz	US NIST www.nist.gov
33	CCEM.RF- K24.F	Correction factor for E-field measurements	Electricity and Magnetism, Radio frequencies	Frequencies: 1 GHz, 2.45 GHz, 10 GHz and 18 GHz Indicated field levels: 10 V/m, 30 V/m and 100 V/m	UK NPL www.npl.co.uk
34	CCEM.RF- K4.CL	Voltage measurements	Electricity and Magnetism, Radio frequencies	Voltage: 1 V ； Frequency: 1 MHz to 300 MHz, 1 GHz (option)	US NIST www.nist.gov
35	CCEM.RF- K5.b.CL	Reflection coefficient / S parameters in type N connectors	Electricity and Magnetism, Radio frequencies	Frequency: 2 GHz to 18 GHz	UK NPL www.npl.co.uk
36	CCEM.RF- K5.c.CL	Reflection coefficient / S parameters in PC-3.5	Electricity and Magnetism, Radio frequencies	Frequency: 50 MHz to 33 GHz	Japan NMIJ www.nmij.jp
37	CCEM.RF- K8.CL	Power in 50 ohm coaxial lines	Electricity and Magnetism, Radio frequencies	Calibration factor of type-N and type-PC7 thermistor mounts Frequency: 10 MHz, 50 MHz, 1 GHz, 4 GHz, 8 GHz, 12 GHz, 15 GHz, and 18 GHz	Nederland NMI-VSL www.vsl.nl
38	CCEM.RF- K25.W	RF power from 33 GHz to 50 GHz in waveguide	Electricity and Magnetism, Radio frequencies	18 frequencies from 33 GHz to 50 GHz in the R400 waveguide band	Germany PTB www.ptb.de
39	APMP.EM.RF- K19.CL	Attenuation in a 50 ohm coaxial line	Electricity and Magnetism, Radio frequencies	Frequency: 60 MHz and 5 GHz	China NIM www.nim.ac.cn
40	APMP.EM.RF- K8.CL	Power in 50 ohm coaxial lines	Electricity and Magnetism, Radio frequencies	Frequency: 10 MHz, 50 MHz, 1 GHz, 4 GHz, 8 GHz, 12 GHz, 15 GHz, and 18 GHz	Japan NMIJ www.nmij.jp
41	APMP.EM-K5.1	AC power at 50 Hz/60 Hz	Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer	Power factor: 1.0, 0.5 Lead, 0.5 Lag, 0.0 Lead, 0.0 Lag	China NIM www.nim.ac.cn

The evaluation and expression of uncertainty of the calibration results are in line with the requirements of JJF1059 series standards.

Antenna Metrology System:

International Comparison: Top-level in the world

Standard Gain Horn Antenna Uncertainty Comparison

Country	NMIs	Chamber Size(m)	Frequency (GHz ）	Uncertainty (dB)
China	NIM	15.1x7.6 x 7.75	2 - 110	0.04 - 0.1
UK	NPL	15 x7.5 x 7.5	2 - 110	0.04-0.08
Russia	VNIIFTRI	10 × 5 ×4	16.7 - 118	0.15-0.25
USA	NIST	-	2 - 110	0.07-0.1

Contact Us

Beijing Office:	Tel: (0086)10-6266-7326 / (0086)10-6266-7327 Fax: (0086)10-6266-7379
Chengdu Office:	Tel: (0086)28-8519-2786 / (0086)28-8519-3044 Fax: (0086)28-8519-3068
Website: www.ainfoinc.com
Email: [email protected]

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