Patent ID: 7633452

Claim:
A hybrid antenna unit comprising: an antenna element; an antenna case in which said antenna element is inserted; a main circuit board mounted in said antenna case, said main circuit board having first and second surfaces opposite to each other; an antenna unit, mounted on the first surface of said main circuit board, for receiving a radio wave from artificial satellites; and a booster circuit, mounted on the second surface of said main circuit board, for use in said antenna element; wherein said antenna unit comprises: a first antenna unit for receiving a first radio wave from a first kind of artificial satellites; and a second antenna unit for receiving a second radio wave from a second kind of artificial satellites; wherein said first antenna unit comprises: a first auxiliary circuit board having a first main surface and a first rear surface which are opposite to each other; a first planar antenna element, mounted on the first main surface of said first auxiliary circuit board, for receiving the first radio wave from said first kind of artificial satellites; a first low noise amplifier circuit, mounted on the first rear surface of said first auxiliary circuit board, for amplifying a first received signal received by said first planar antenna element; and a first shielding case for shielding said first low noise amplifier circuit; and wherein said second antenna unit comprises: a second auxiliary circuit board having a second main surface and a second rear surface which are opposite to each other; a second planar antenna element, mounted on the second main surface of said second auxiliary circuit board, for receiving the second radio wave from said second kind of artificial satellites; a second low noise amplifier circuit, mounted on the second main surface of said second auxiliary circuit board, for amplifying a second received signal received by said second planar antenna element; and a second shielding case for shielding said second low noise amplifier circuit.