Patent ID: 6300909
Filing Date: 2001-10-09
Classification: H01Q

Abstract:
An antenna unit comprising:a basic body having first and second main surfaces and at least one surface extending between the main surfaces;a grounding electrode provided on the first main surface of the basic body;a first radiation electrode comprising a first antenna, having an open end at one end thereof, and provided on the second main surface of the basic body;a second radiation electrode comprising a second antenna, having an open end at one end thereof, and provided on the second main surface of the basic body;a first connecting electrode for connecting the first radiation electrode to the grounding electrode, and provided on an end surface of the basic body;a second connecting electrode for connecting the second radiation electrode to the grounding electrode, and provided on an end surface of the basic body;a feeding electrode for transmitting a signal to at least one of the first radiation electrode and the second radiation electrode, and provided on the basic body; anda control electrode on the basic body for providing coupling capacitances between the open end of the first radiation electrode and the control electrode and between the open end of the second radiation electrode and the control electrode, and provided so as to be close to each of the open ends.