What is BS 9220 N001 - (2:1) Rigid waveguide tubing specification about?
BS 9220 N001 discusses detailed specifications for ordinary rectangular (2:1) rigid waveguide tubing. Rectangular (2:1) rigid waveguide tubing is a hollow metal tube with a rectangular cross-section.
BS 9220 N001 specifies the standard wall thickness of an ordinary rectangular (2:1) rigid waveguide tubing. BS 9220 N001 also defines the general application of a rectangular (2:1) rigid waveguide tubing.
Who is BS 9220 N001 - (2:1) Rigid waveguide tubing specification for?
BS 9220 N001 on (2:1) Rigid waveguide tubing specification is useful for:
- Telecommunication component manufacturers
- Telecommunication equipment manufacturers
- Design engineers
- Quality control personnel
Why should you use BS 9220 N001 - (2:1) Rigid waveguide tubing specification?
The conducting walls of the waveguide confine the electromagnetic fields and thereby guide the electromagnetic wave. The rectangular waveguide is basically characterized by its dimensions i.e., length a, and breadth b. BS 9220 N001 describes the alternate sizes in the tables that have been chosen from two staggered series, each covering the frequency range in steps with a frequency ratio of approximately 1.5. The nominal frequency range is approximately from1.25Rc to 1.9Rc (Rc = cut-off frequency of dominant mode). For any particular type of application, the effective frequency range may be smaller or greater than the nominal frequency range.
The actual frequency range required in a specific case may not fall into the effective working frequency range of a waveguide size in one series. The other series will then generally be found suitable. In the table, the two series are combined. The values quoted are the theoretical breakdown values at a frequency 1.5 times the cut-off frequency (assuming breakdown in the air at N.T.P. to occur at 30 000 V/cm). The figures quoted include a power safety factor of two as well as an allowance for a voltage standing wave ratio of 0.5 (33 % voltage reflection coefficient). Using BS 9220 N001 you can understand the standard wall thickness of an ordinary rectangular (2:1) rigid waveguide tubing.
