Abstract: A super wide bandwidth coupling antenna comprises a first radiation portion made of electric conductor; the first radiation having a body and a feeding frame extending from a body of the first radiation portion; a second radiation portion formed by an electric conductor; a supporting frame extending from a body of the second radiation portion; a ground portion made of electric conductor; one end of the ground portion being connected to the supporting frame of the second radiation portion; a signal feeding wire having a main signal end wire which is electrically connected to the feeding frame of the first radiation portion; a ground end wire of the signal feeding wire being electrically connected to the ground portion; an isolation post for positioning the first radiation portion and second radiation portion with an insulating gap between the first radiation portion and second radiation portion.

Abstract: A super wide bandwidth coupling antenna comprises a first radiation portion made of electric conductor; the first radiation having a body and a feeding frame extending from a body of the first radiation portion; a second radiation portion formed by an electric conductor; a supporting frame extending from a body of the second radiation portion; a ground portion made of electric conductor; one end of the ground portion being connected to the supporting frame of the second radiation portion; a signal feeding wire having a main signal end wire which is electrically connected to the feeding frame of the first radiation portion; a ground end wire of the signal feeding wire being electrically connected to the ground portion; an isolation post for positioning the first radiation portion and second radiation portion with an insulating gap between the first radiation portion and second radiation portion.

Abstract: A retention structure for mounting an antenna to a device casing is disclosed, including an outer collar having an end forming a circumferential retention flange, a portion of which is axially extended to serve as a stop, as least one retention projection being formed on an outside surface of the collar and extending from the retention flange; and an inner sleeve rotatably received in the collar and having a first end to which the antenna is attached and a free second end from which two axially extending slots are defined to divide the sleeve into two spaced, resilient portions, a stop block formed on the sleeve to cooperate with the stop of the collar for limiting rotation angle of the sleeve with respect to the collar. The collar is attached to the casing, while the sleeve is attached to the antenna. By the fast and secure engagement between the sleeve and the collar, the antenna is readily and securely mounted to the casing.