| 摘要 |
A circular wave guide for transmitting the TE11 mode of propagation is manufactured such that it is suitable for winding on a drum. During manufacture, a flexible thin-walled conductive tube is reinforced by an outer protective covering of plastic material and by an inner reinforcing member also of plastic material. The inner reinforcing member may be of tubular cross-section as shown, or may have some other cross-section, e.g. cruciform. The inner reinforcing member may be made of a material which shrinks on heating so that it can be removed once the wave guide has been unwound from the drum employed during transport. The conductor tube may be periodically intended to improve its flexibility.
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