Portable telephone with broadcast receiver
View Patent ↗To provide a cell phone equipped with a broadcast receiver that delivers a high receiving sensitivity and antenna performance in various usage states. A loop element 12 as an antenna for receiving television broadcast is arranged in a range (c) of an upper end portion of an upper housing 1 . An end part of an upper circuit board 6 is matched with a portion shown by (a) so that a conductor other than the antenna element does not exist in the range (c). A monopole element 19 for cell phone communication is arranged at a lower end portion of a lower housing 2.
1. A cell phone equipped with a broadcast receiver comprising:
a first housing;
a second housing;
a hinged part for rotatably connecting the first housing and the second housing;
a loop element comprising a first broadcast receiving antenna element provided at an end of the first housing opposite to an end where the hinged part is connected;
a cell phone communication antenna element provided at an end of the second housing opposite to an end where the hinged part is connected; and
a changing unit for changing resonance frequency of one of:
(1) the first broadcast receiving antenna element to a frequency higher than a radio frequency band of cell phone communications in case the cell phone communications is given a priority; and
(2) the cell phone communication antenna element to a frequency higher than a radio frequency band of television broadcasts in case the television broadcasts receiving performance is given a priority.
2. The cell phone equipped with a broadcast receiver according to claim 1 , wherein
the first broadcast receiving antenna element comprises a magnetic field antenna and
the cell phone communication antenna element comprises an electric field antenna.
3. The cell phone equipped with the broadcast receiver according to claim 1 , wherein
a circuit board and a conductor component are arranged closer to the hinged part than the first broadcast receiving antenna element in the first housing, and
a circuit board and a conductor component are arranged closer to the hinged part than the cell phone communication antenna element in the second housing.
4. The cell phone equipped with the broadcast receive according to claim 1 , wherein one end of a power feeding part of the loop element is connected to a section corresponding to high frequency ground potential of the first housing.
5. The cell phone equipped with the broadcast receiver according to claim 1 , wherein the cell phone communication antenna element comprises a monopole element.
6. The cell phone equipped with the broadcast receiver according to claim 1 further comprising:
a second broadcast receiving antenna element provided in close proximity to the end of the second housing where the hinged part is connected; and
a selecting unit for selecting either the first broadcast receiving antenna element or the second broadcast receiving antenna element or a diversity reception unit for performing diversity reception.
7. The cell phone equipped with the broadcast receiver according to claim 6 , wherein
the first broadcast receiving antenna element comprises a magnetic field antenna, and
the second broadcast receiving antenna comprises an electric field antenna.
8. The cell phone equipped with the broadcast receiver according to claim 7 , wherein the second broadcast receiving antenna element is a telescopic meander antenna or a helical antenna.
9. The cell phone equipped with the broadcast receiver according to claim 6 , further comprising:
an earphone cable antenna comprising a third broadcast receiving antenna element; and
wherein the selecting unit selecting one of the first broadcast receiving antenna element, the second broadcast receiving antenna element and the earphone cable antenna.
10. The cell phone equipped with the broadcast receiver according to claim 9 further comprising a diversity reception unit for performing diversity reception by using all or any two of the first broadcast receiving antenna element, the second broadcast receiving antenna element and the earphone cable antenna.