YD/T 1644.4-2020Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices - Human models, instrumentation, and procedures- Part 4: Procedure to determine the specific absorption rate (SAR) for limb-worn wireless communication (English PDF)
手持和身体佩戴使用的无线通信设备对人体的电磁照射 人体模型、仪器和规程 第4部分：肢体佩戴的无线通信设备的比吸收率（SAR）评估规程（频率范围30MHz～6GHz）
This is a limited preview
Buy now to download the full PDF (9 pages)
Need quotation for your management?
Get a formal quotation for YD/T 1644.4-2020 in 30 minutes.
Issued by
Ministry of Industry and Information Technology
Level / Type
National · Recommended
Issue date
December 9, 2020
Implementation date
January 1, 2021
Scope
YD/T 1644.4-2020 is the English-translated version of 手持和身体佩戴使用的无线通信设备对人体的电磁照射 人体模型、仪器和规程 第4部分：肢体佩戴的无线通信设备的比吸收率（SAR）评估规程（频率范围30MHz～6GHz）.
YD/T 1644.4-2020 — Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices - Human models, instrumentation, and procedures- Part 4: Procedure to determine the specific absorption rate (SAR) for limb-worn wireless communication
Found what you need?
Document preview — YD/T 1644.4-2020
National Standard of the People's Republic of China
- ICS
- 33.100
- Classification
- M 03
Issued by: Ministry of Industry and Information Technology
Contents
- Document data1
Document data
International classification (ICS): 33.100.
Chinese classification (CCS): M03.
Estimated length of the Chinese original: 13,169 words.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.
Referenced standards
How to Download YD/T 1644.4-2020
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
YD/T 1644.1-2007 — Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices-Human models, instrumentation, and procedures - Part 1: Procedure to determine the specific absorption rate (SAR) for hand-held devices used in close p
YD/T 1644.2-2011 — Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices-human models, instrumentation, and procedures. Part 2: Procedure to determine the specific absorption rate(SAR) for wireless communication devices used
YD/T 6486-2025 — General assessment method of data set quality for artificial intelligence - Overall requirements
Secure payment via Stripe
Payments accepted
YD/T 1644.4-2020
$264.00