Feeding apparatus for monopole antenna and related analog broadcast player system and integration system
A feeding apparatus for a monopole antenna having a radiating unit and a grounding unit is for transmitting a multimedia signal to a multimedia player device coupled to the radiating unit. The feeding apparatus includes a first feeding unit coupled to an inner conductor of a coaxial cable for feeding the multimedia signal transmitted by the coaxial cable to the radiating unit, and a second feeding unit coupled to a conducting mesh of the coaxial cable for connecting to the grounding unit.
1. A feeding apparatus for a monopole antenna having a radiating unit and a grounding unit, for transmitting a multimedia signal to a multimedia player device coupled to the radiating unit, the feeding apparatus comprising:
a first feeding unit coupled to an inner conductor of a coaxial cable for feeding the multimedia signal transmitted by the coaxial cable to the radiating unit; and
a second feeding unit coupled to a conducting mesh of the coaxial cable for connecting to the grounding unit.
2. The feeding apparatus of claim 1 , wherein the monopole antenna is a frequency modulation (FM) antenna, and the multimedia player device is a vehicle FM player device.
3. The feeding apparatus of claim 1 , wherein the multimedia signal is an analog broadcast signal in an available FM frequency band and the analog broadcast signal is transformed from a digital satellite broadcast signal received by a digital satellite broadcast transformation device.
4. The feeding apparatus of claim 1 , wherein the first feeding unit makes metal contact with the radiating unit in order to feed the multimedia signal to the radiating unit.
5. The feeding apparatus of claim 4 , wherein the first feeding unit and the radiating unit are made of metal material.
6. The feeding apparatus of claim 1 , wherein the second feeding unit makes metal contact with the grounding unit.
7. The feeding apparatus of claim 6 , wherein the second feeding unit and the grounding unit are made of metal material.
8. The feeding apparatus of claim 1 , wherein the first feeding unit and the radiating unit are ¼ wavelength open circuit transmission lines respectively.
9. The feeding apparatus of claim 1 , wherein the second feeding unit and the grounding unit are ¼ wavelength open circuit transmission lines respectively.
10. The feeding apparatus of claim 1 , wherein the first feeding unit feeds the multimedia signal to the radiating unit by using electromagnetic coupling.
11. The feeding apparatus of claim 1 , wherein the second feeding unit is electromagnetically coupled to the grounding unit.