Internal broadcast receiving system for mobile phone

A technology for broadcast reception and mobile phones, which is applied in transmission systems, circuits, rotating antennas, etc., and can solve the problems of increasing the weight and size of handheld devices

Inactive Publication Date: 2003-04-09
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of this external antenna is that it protrudes significantly and it adds weight and size to the handheld

Method used

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  • Internal broadcast receiving system for mobile phone
  • Internal broadcast receiving system for mobile phone
  • Internal broadcast receiving system for mobile phone

Examples

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Embodiment Construction

[0040] According to the invention, the basic components of the integrated FM / digital broadcast receiving system 1 consist of an antenna 10 directly connected to a pre-processing module 20 . The antenna 10 and the preprocessing module are configured on the substrate 5, such as Figure 2a with 2b shown. The antenna 10 may be printed on the substrate 5 or etched from the ground plane 60 of a printed circuit board (PCB) or a printed wiring board (PWB). Thus, the integrated receiving system 1 is easy to produce and install in a handheld telecommunication device like a mobile phone 100, as shown in Figures 1a-1c.

[0041] As shown in Figures 1a-1c, a mobile phone 100 has a phone body or housing 110, and a chassis 120 on which some or all of the electronic and telecommunications components are disposed. For example, a microprocessor or ASIC is mounted on the chassis 120 together with a display, SIM card reader, memory, battery, etc. The base plate is not part of the invention. Th...

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PUM

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Abstract

An integrated reception system for use in a mobile phone for receiving FM / digital broadcast signals. The reception system, which is installed within the phone body, includes a substrate, an antenna having a meandering pattern disposed on the substrate for receiving the broadcast signals, and a pre-processing module disposed on the substrate and connected to the antenna for pre-processing the received signals. The pre-processing module may include a passive filtering network for band-tuning, and an active amplifier for amplifying the received signals from the antenna. The mobile phone has components for converting the received signals into audio signals to produce audio sound.

Description

technical field [0001] The present invention relates generally to internal antennas for use in handheld devices such as a mobile telephone, and more particularly to internal receiving systems for receiving FM / digital broadcast signals. Background technique [0002] It is known that frequency modulated (FM) broadcast signals are usually transmitted using a carrier in the frequency range 88-108 MHz. FM broadcasting is also known as very high frequency (VHF) radio broadcasting. In order to receive FM broadcast signals, an antenna with a quarter wave of the order of 85 cm is required. To accommodate such lengths, handheld devices typically use external antennas, such as telescopic antennas and headsets, for FM broadcast reception. The main disadvantage of this external antenna is that it protrudes significantly and it increases the weight and size of the handheld device. In particular, when a mobile phone is equipped with an FM broadcast receiving system, it is not desirable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08H01Q1/24H01Q1/36H01Q1/38H01Q23/00
CPCH01Q1/362H01Q1/084H01Q23/00H01Q1/243H01Q1/38
Inventor I·T·科约拉M·J·托米宁
Owner NOKIA CORP
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