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YD/T 2722-2014 English PDF (YDT2722-2014)

YD/T 2722-2014 English PDF (YDT2722-2014)

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YD/T 2722-2014: RF technical requirements and test methods for 60GHz radio equipment

This standard specifies the technical requirements and test methods for the equivalent isotropic radiation power, antenna port output power, transmitter spurious emission, receiver spurious emission, carrier frequency tolerance, out-of-band emission for radio equipment operating in the 60 GHz frequency band. This standard applies to radio equipment operating in the frequency range of 59 GHz ~ 64 GHz.
YD/T 2722-2014
YD
COMMUNICATION INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 33.060.20
M 36
RF technical requirements and test methods for
60GHz radio equipment
ISSUED ON: OCTOBER 14, 2014
IMPLEMENTED ON: OCTOBER 14, 2014
Issued by Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms, definitions and abbreviations ... 4
3.1 Terms and definitions ... 4
3.2 Abbreviations ... 5
4 Technical requirements ... 5
4.1 Environmental requirements ... 5
4.2 Conformity requirements ... 6
5 Test method ... 8
5.1 Environmental conditions of the test ... 8
5.2 Test results and uncertainty ... 8
5.3 Test configuration ... 9
Appendix A (Normative) Test field for radiation test ... 19
Appendix B (Normative) General test method for radiated spurious ... 21 References ... 23
RF technical requirements and test methods for
60GHz radio equipment
1 Scope
This standard specifies the technical requirements and test methods for the equivalent isotropic radiation power, antenna port output power, transmitter spurious emission, receiver spurious emission, carrier frequency tolerance, out- of-band emission for radio equipment operating in the 60 GHz frequency band. This standard applies to radio equipment operating in the frequency range of 59 GHz ~ 64 GHz.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this standard. For undated references, the latest version (including all amendments) applies to this document.
GB 9254-2008 Information technology equipment - Radio disturbance
characteristics - Limits and methods of measurement
ITU-R SM.1539-1 (2002) Variation of the boundary between the out-of-band and spurious domains required for the application of Recommendations ITU- R SM.1541 and ITU-R SM. 329
3 Terms, definitions and abbreviations
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.1.1
Equivalent isotropic radiated power
The product of the power output to the antenna relative to the antenna gain of the isotropic antenna in the specified direction.
4.2 Conformity requirements
4.2.1 Peak equivalent isotropic radiated power
4.2.1.1 Overview
The product of the peak power output to the antenna as relative to the antenna gain of the isotropic antenna in the specified direction.
4.2.1.2 Limits
When the transmitter is operating at the maximum power level, the peak
equivalent isotropic radiation power?€?s limit is 47 dBm.
4.2.2 Average equivalent isotropic radiated power
4.2.2.1 Overview
The product of the average power output to the antenna relative to the antenna gain of the isotropic antenna in the specified direction.
4.2.2.2 Limit value
When the transmitter works at the maximum power level, the average
equivalent isotropic radiation power?€?s limit is 44 dBm.
4.2.3 Antenna port output power
4.2.3.1 Overview
The peak power output to the antenna port.
4.2.3.2 Limit
When the transmitter is working at the maximum power level, the antenna port output power?€?s limit is 10 dBm.
4.2.4 Transmitter?€?s spurious emissions
4.2.4.1 Overview
Transmitter spurious emission refers to the unwanted emission in the spurious domain when the device is in the transmitting state. According to the provisions of ITU-R SM.1539-1, the start and end boundary of the spurious domain is defined as the sum of the center frequency of the current transmission channel and a specific offset. The relationship between the specific offset and the bandwidth occupied by the device is as shown in Table 1. The occupied
bandwidth is a -6 dB bandwidth of the transmitted signal.
The maximum allowable deviation of the center frequency of the frequency band occupied by the transmission from the claimed center frequency,
represented by 10-6.
4.2.6.2 Limit value
The limit of carrier frequency tolerance is: 500 x 10-6.
4.2.7 Out-of-band emission
4.2.7.1 Overview
The out-of-band emission in this standard specifically refers to the maximum power spectral density of the transmitter in the frequency range of 57 GHz ~ 59 GHz and 64 GHz ~ 66 GHz.
4.2.7.2 Limit value
The out-of-band emission limit is: -5 dBm/MHz
4.2.8 Integrated antenna
The device shall have an integrated antenna structure, to prevent users from disassembling the integrated antenna and installing antenna connectors to replace other antennas during use.
5 Test method
5.1 Environmental conditions of the test
The test items as defined in this standard shall be carried out under normal working environmental conditions. These environmental conditions shall be within the limit operating environment stated by the manufacturer.
5.2 Test results and uncertainty
The complete test result's expression shall consist of the following parts: - Measured value and corresponding limit;
- Measurement uncertainty.
The measurement uncertainty shall not be greater than the value in Table 4. - The channel with the lowest operating frequency;
- The channel with the highest operating frequency;
- A channel closest to the midpoint of the nominal operating frequency range; - During broadband transmission, if the device under test supports multiple bandwidths, tests shall be carried out for each bandwidth;
- If the device under test supports narrowband transmission, the transmission power of the device shall also be tested in narrowband mode;
- It shall calculate the channel spacing based on the minimum spacing (in MHz) between any two center channel frequencies in the channel plan;
- If the transmit power is adjustable, the highest available power level shall be used for all measurements;
- For the smart antenna system, the device under test shall be configured, to deliver the highest output power to the measuring device, meanwhile record the method in the test report;
- If an integrated antenna is used, meanwhile there is no suitable method for the conduction measurement of the equipment, the radiation measurement
shall be performed in all such cases.
5.3.3 Peak equivalent isotropic radiated power
The peak equivalent isotropic radiated power shall be measured using the test field as described in Appendix A and the method in Appendix B.
Use a suitable attenuator to connect the device under test to a matched diode detector or equivalent device. The output end of the diode detector shall be connected to the vertical channel of an oscilloscope or equivalent power measurement equipment.
The combination of diode detector and oscilloscope shall be able to accurately reproduce the duty cycle of the transmitter output signal. Observe the duty cycle of the transmitter and record it in the test report. For this test, the duty cycle of the device under test shall not be less than 0.1.
Use a spectrum analyzer to measure the output power of the transmitter. The integration factor of the spectrum analyzer shall exceed 5 times or more of the repetition period of the transmitter. Use the RMS detection method. At this time, the device under test shall use the highest power level to transmit. The observed value is recorded as "A" (expressed in dBm).
The peak equivalent isotropic radiated power Ppeak shall be calculated based The antenna port's output power Pant can be calculated according to formula (2),
Where:
Pant - Antenna port's output power
A - The measured output power, in (dBm)
x - Transmitter output signal's duty cycle
If the integrated design of the equipment cannot provide an antenna interface, formula (3) can be used to calculate the output power of the antenna port, Where:
Pant - Antenna port's output power, in (dBm);
Ppeak - Peak equivalent isotropic radiation power, in (dBm);
G - The maximum antenna gain on the frequency band where the device
can work (expressed in dBi).
5.3.6 Transmitter spurious emissions
5.3.6.1 Configuration requirements
Transmitter's unwanted emissions shall be measured using the test field as described in Appendix A and the method in Appendix B.
If the transmitter adopts an antenna array that distributes power symmetrically, if feasible, only one transmission link (antenna) shall be reserved, whilst the other transmission links (antennas) shall be disabled. If it is not feasible, it shall record the methods used in the test report.
If only one transmission link is tested, the test results shall be modified, to be adapted to the entire system (all transmission links). The transmit power (mW) of a transmit link needs to be multiplied by the number of transmit links, to obtain the total transmit power of the system.
The device under test shall be configured, to work under the state of the maximum duty cycle and maximum output power level.
5.3.6.2 Pre-scan
The following steps shall be used to accurately measure the single spurious emission found during the pre-scan measurement in 5.3.6.2.
For continuous emission signals, it is allowed to use the Video Average detector of the spectrum analyzer for measurement. Otherwise, only the "high level" part of the emission shall be tested.
Use the following spectrum analyzer settings to measure emission levels in the time domain:
- Center frequency: The frequency determined in the pre-scan process;
- Resolution bandwidth: If the center frequency is less than 1 GHz, it is 100 kHz; otherwise it is 1 MHz;
- Video bandwidth: If the center frequency is less than 1 GHz, it is 100 kHz; otherwise it is 1 MHz;
- Band width: 0 Hz;
- Scan time: Suitable for capturing a burst emission;
- Trigger: Video trigger;
- Detector: Average;
- Tracking method: Clear and write.
Fine tune the center frequency accordingly to capture the highest amplitude in the burst emission to be measured.
Change the detection method on the spectrum analyzer to Video average, at least 100 scans.
The measured value is the average spurious emission power of burst emission. This value shall be recorded and compared with the limit in Table 2.
5.3.7 Receiver spurious emissions
5.3.7.1 Configuration requirements
Receiver's unwanted emissions shall be measured using the test field as described in Appendix A and the method in Appendix B.
If the receiver uses an antenna array, if feasible, only one transmission link (antenna) shall be reserved, whilst the other transmission links (antennas) shall be disabled. If it is not feasible, the method used shall be recorded in the test report.
This section is to accurately measure the spurious emissions found in the spurious domain during the pre-scan process in 5.3.7.2.
The following spectrum analyzer settings shall be used:
- Center frequency: The frequency determined in the pre-scan process:
- Resolution bandwidth: If the center frequency is less than 1 GHz, it is 100 kHz; otherwise it is 1 MHz;
- Video bandwidth: If the center frequency is less than 1 GHz, it is 100 kHz; otherwise it is 1 MHz;
- Detector mode: RMS;
- Tracking method: Maximum hold.
The measured value is the average spurious emission power of burst reception. This value shall be recorded and compared with the limit in Table 3.
5.3.8 Carrier frequency tolerance
The carrier frequency tolerance shall use the test field as described in Appendix A.
The transmitter shall be adjusted to single carrier transmission mode.
Use a spectrum analyzer to read the maximum value f of the signal envelope; calculate the carrier frequency tolerance according to formula (4).
Where:
??f - Carrier frequency tolerance;
f - Maximum value f of signal envelope;
f0 - The nominal center frequency.
5.3.9 Out-of-band emission
Out-of-band emission shall be measured using the test field as described in Appendix A and the method in Appendix B.
The transmitter shall transmit at the nominal maximum power level.
The spectrum analyzer settings are as follows:

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