KR950004635A - 3 perforated roof antenna - Google Patents

Abstract

The present invention provides a three-wave loop antenna for receiving a cellular radio telephone, an FM radio, and an AM radio. The antenna element 10 includes a conductor 15 on a coil over the insulator 16. It is constructed by rolling. The lower end thereof is a mold portion 14, and a trap coil 12 is provided. The electrical length from the antenna top 11 of the antenna element 10 configured as described above to the splice 17 is about 1/4 wavelength of the FM radio stand, and the electrical length from the splice 17 to the bottom of the trap coil. Is about a quarter wavelength of a cellular cordless phone. The first substrate 20 and the second substrate 21 are embedded in the cover 19 on which the antenna base is supported, and a matching circuit, a splitter, and an amplifier are installed on the first substrate 20 and the second substrate. have.

Description

3 perforated roof antenna

Since this is an open matter, no full text was included.

1 is a circuit diagram of a tri-pore loop antenna of the present invention, and FIG. 2 is an external view of a tri-pore loop antenna of the present invention.

Claims (14)

In a loop antenna having an antenna element in which a trap coil is inserted, and an antenna case in which a splitter, an amplifier, and a mixer are built-in, and fixed to a loop of the vehicle body, the antenna element from the antenna element to the trap coil of the antenna element is provided. The antenna element resonates with a first frequency signal, the electrical length from the antenna base end to the antenna top resonates with a second frequency signal, and receives the third frequency signal by the entire antenna element. The first frequency signal of the three frequency signals received in the antenna element by the splitter is divided and output as it is, and the second frequency signal and the third frequency are again output by the splitter. At the same time the signal is divided by the amplifier Three wave shared antenna loop, characterized in that by mixing the frequency signal and the frequency signal of the third of each of the amplified and amplified by the second mixer to the output from said antenna case. The three-wave wave according to claim 1, wherein the first frequency signal is a signal of a portable radio band, the second frequency signal is a signal of an FM radio band, and the third frequency signal is a signal of an AM radio band. Public loop antenna. 3. The three-phase hollow antenna according to claim 1 or 2, wherein the splitter, the amplifier, and the mixer are distributed on a plurality of circuit boards housed in the antenna case. The loop antenna of claim 3, wherein the splitter, the amplifier, and the mixer are incorporated in the antenna case having a capacity of about 30 cc or less. In a three-wave loop antenna for attaching an antenna element capable of receiving three waves to an antenna case fixed to a roof of a vehicle body, the antenna case is composed of a cover and a base, and the elements are closed from the cover to the outside. A plurality of tongues are provided by lowering a plurality of tongues by providing a rod-shaped engagement portion at the lower end of the connecting rod, electrically connecting the connecting fastener with a circuit board attached to the base, and inserting a slit in the radial direction of the connecting piece. The engagement portion provided on the engagement portion with the engagement portion is press-fitted to the engagement portion when the engagement portion facing toward the base is fitted to the base. Loop antenna for three-hole air, characterized in that it becomes. The loop antenna according to claim 5, wherein the antenna element is configured to receive frequency signals of a portable radio telephone, an FM radio, and an AM radio. The loop antenna of claim 6, wherein the splitter, the amplifier, and the mixer are incorporated in the antenna case having a capacity of about 30 cc or less. And an antenna case in which a trap coil is inserted in the middle, and an antenna case on which the antenna element is mounted, and in which a splitter, an amplifier, and a mixer are installed, and which is fixed to a loop of the vehicle body. The electrical length from the antenna proximal end of the element to the trap coil resonates with the first frequency signal, the electrical length from the antenna proximal end to the antenna top resonates with the second frequency signal, and the third frequency is caused by the entire antenna element. The antenna element is configured to receive a signal, and the antenna case is composed of a cover and a base, and a rod-shaped fitting portion is provided at a lower end of the element hinged member which is closed from the cover to the outside, and on the base. The connecting piece is electrically connected to the attached circuit board. By inserting the slits in the radial direction of the connecting piece fittings, a plurality of tongues are formed to engage the downwards, and when the cover is fitted to the base, the fittings provided in the engaging portions are provided in the fitting portions. By means of a press-fitting part, the element connecting rod is electrically connected to the circuit board, and the splitter divides the first frequency signal among the frequency signals of the three waves received in the antenna element and outputs the same. The second frequency signal and the third frequency signal are further divided by the splitter, and the divided frequency signal is amplified by the amplifier, respectively, and the second frequency signal and the third amplified by the mixer are used. A three-wave loop, characterized in that for mixing the three frequency signals to output from the antenna case Antenna. 9. The method according to claim 8, wherein the first frequency signal is a signal of a portable radio telephone set, the second frequency signal is a signal of an FM radio band, and the third frequency signal is a signal of the AM radio band. 3-pole loop antenna. The loop antenna according to claim 8 or 9, wherein the splitter, the amplifier, and the mixer are incorporated in the antenna case having a capacity of about 30 cc or less. 10. The loop antenna according to claim 8 or 9, wherein the splitter, the amplifier, and the mixer are distributed on a circuit board accommodated in a plurality of sheets in the antenna case. 12. The three-wave wave according to claim 11, wherein a plurality of stages of ring-shaped notches are provided inside the cover in a plane substantially parallel to the base, and the circuit board is accommodated in the cover so as to abut each of the notches. Public loop antenna. 13. The three-hole loop antenna according to claim 12, wherein the splitter, the amplifier, and the mixer are incorporated in the antenna case having a capacity of about 30 cc or less. 12. The loop antenna of claim 11, wherein the splitter, the amplifier, and the mixer are incorporated in the antenna case having a capacity of about 30 cc or less. ※ Note: The disclosure is based on the initial application.