The second embodiment is based on the configuration of {TAIL ~ the first embodiment}, and furthermore, a plurality of {HEAD ~ recesses} 36 are arranged, in addition to a recess 32, on a surface of an antenna structure support 27 which faces a wall 7 a of an attachment portion 7 as shown in FIG 9 
The second embodiment is based on the configuration of { TAIL ~ the first embodiment } , and furthermore , a plurality of { HEAD ~ recesses } 36 are arranged , in addition to a recess 32 , on a surface of an antenna structure support 27 which faces a wall 7 a of an attachment portion 7 as shown in FIG 9
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