KR101417005B1 - signal processing module - Google Patents

Abstract

Embodiments provide a signal processing module capable of receiving and processing a frequency modulation (FM) signal and a radio signal. A signal processing module according to an embodiment of the present invention includes an antenna unit for receiving a first signal of a radio band, a filter unit for receiving a radio signal and filtering a second signal of the Bluetooth band, And a signal processing unit for receiving and processing the second signal from the filter unit.

Radio, Bluetooth

Description

A signal processing module

Embodiments provide a signal processing module capable of receiving and processing a frequency modulation (FM) signal and a radio signal.

Recently, as the spread of the mobile communication terminal has been increased and the functions thereof have been diversified, the application range of the terminal has been widening. Especially, the mobile communication terminal and peripheral device such as headset and printer can be wirelessly connected . For example, a bluetooth terminal configured by a combination of a mobile communication terminal and a headset can make a phone call with only a headset while the terminal is put in a pocket.

In recent years, as functions required by consumers for mobile communication terminals have diversified, mobile communication terminals and headsets are equipped with Bluetooth functions as well as other additional functions.

The embodiment provides a signal processing module having a radio listening function and a Bluetooth function.

A signal processing module according to an embodiment of the present invention includes an antenna unit for receiving a first signal of a radio band, a filter unit for receiving a radio signal and filtering a second signal of the Bluetooth band, And a signal processing unit for receiving and processing the second signal from the filter unit.

The embodiment has an effect of improving the space efficiency by configuring the signal processing module as a single module by mounting an antenna capable of receiving a radio signal.

In the embodiment, since the signal processing module has the built-in antenna, it is simple to use because it does not require an earphone, which is conventionally used as an antenna, and it is possible to directly listen to the radio without using the earphone.

Hereinafter, a mask according to an embodiment will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. I will say.

A signal processing module according to embodiments will be described in detail with reference to the accompanying drawings. Hereinafter, when referred to as "first "," second ", etc., it is not intended to define members but to indicate members having at least two members. Accordingly, it is evident that a plurality of members are provided as referred to as the "first "," second ", etc., and each member may be used selectively or interchangeably. In addition, the sizes (dimensions) of the respective components in the accompanying drawings are shown in an enlarged scale to facilitate understanding of the invention, and the ratio of the dimensions of the respective components shown may be different from the ratio of the actual dimensions. In addition, not all elements shown in the drawings are necessarily included in the present invention, and elements other than the essential features of the present invention may be added or deleted. In the description of embodiments according to the present invention, it is to be understood that each layer (film), region, pattern or structure may be referred to as being "on / above / over / upper" A region, a pad, a pattern, or a structure is directly formed on a substrate, each layer (film), a region, a region, May be interpreted as being formed in contact with a pad or patterns and may be interpreted as a case in which another layer (film), another region, another pad, another pattern or other structure is additionally formed therebetween. Therefore, the meaning should be judged by the technical idea of the invention.

1 is a block diagram schematically illustrating a signal processing module according to an embodiment.

Referring to FIG. 1, the signal processing module 100 according to the embodiment is a module for performing a Bluetooth function and a radio receiving function.

The signal processing module 100 may be mounted on at least one of a mobile communication terminal and a Bluetooth headset.

The signal processing module 100 includes a filter unit 110 for receiving a short range wireless signal and passing only a signal of a Bluetooth band to the signal processing unit 140.

The signal processing module 100 includes an antenna unit 120 for receiving a radio signal and a matching unit 130 for matching radio signals received from the antenna unit 120.

The signal processing module 100 further includes a signal processing unit 140 for processing a radio signal received from the filter unit 110 and a radio signal transmitted from the matching unit 130.

The filter unit 110 may include, for example, at least one band pass filter.

The radio signal may be, for example, an FM radio signal.

The signal processor 140 may be, for example, a Bluetooth chip.

The Bluetooth chip may further include a radio signal processor, for example, an FM processor capable of processing the radio signal.

The filter unit 110, the antenna unit 120, the matching unit 130, and the signal processing unit 140 may be implemented as a single module.

Therefore, when the signal processing module 100 according to the embodiment is implemented in a mobile communication terminal or a headset, not only a Bluetooth function but also a radio receiving function can be realized, and space efficiency can be maximized.

2 is a block diagram illustrating a signal processing module according to an embodiment of the present invention.

Referring to FIG. 2, the signal processing module 100 according to the embodiment includes a filter unit 110 and a signal processing unit 140 for receiving and processing short-range wireless signals.

The signal processing module 100 further includes an antenna unit 120 for receiving a radio signal and a matching unit 130. A radio signal matched by the matching unit 130 is input to the signal processing unit 140, Lt; / RTI >

The filter unit 110 may include at least one filter, and the filter may be a band-pass filter. For example, the filter may be a SAW filter.

The filter unit 110 blocks the adjacent band signal and the noise component of the signal of the Bluetooth band and filters only the signal of the Bluetooth band and transmits the signal to the signal processing unit 140. [

The antenna unit 120 may include a conductor wire and a ground plate.

The length of the conductor wire and the area of the ground plate are determined by the frequency to be received.

For example, the FM radio signal received through the antenna unit 120 is transmitted to the matching unit 130.

The matching unit 130 performs impedance matching between the antenna unit 120 and the signal processing unit 140 and generates a stable signal and transmits the stable signal to the radio signal processing unit 147 of the signal processing unit 140. The radio signal processor 147 demodulates the radio signal and outputs it as an audio signal.

As described above, since the antenna unit 120 and the radio signal processing unit 147 are mounted in the signal processing module 100, it is unnecessary to use an earphone serving as an antenna. Therefore, The terminal can be implemented.

The signal processing unit 140 includes a switching unit 141 for separating a radio signal received from the filter unit 110 into a reception signal and a transmission signal, a reception signal processing unit 130 for processing the reception signal received from the switching unit 141, A transmission signal processing unit 145 for transmitting a transmission signal to the switching unit 141 and a radio signal processing unit 147 for processing the radio signal received from the matching unit 130.

The reception signal processing unit 143, the transmission signal processing unit 145 and the radio signal processing unit 147 are connected to the baseband processing unit 149.

The baseband processor 149 processes the transmitted data and includes an operation program for performing a control function. The baseband processor 149 processes a baseband frequency using a spread spectrum method. The baseband frequency refers to a frequency at which a digital signal can be transmitted / received without performing a frequency modulation process. The baseband processor 149 controls the reception signal processor 143, the transmission signal processor 145 and the radio signal processor 147 to control the Bluetooth function and the radio listening function to operate normally.

The signal processor 140 according to the embodiment may be implemented as a Bluetooth chip having a radio signal processing function.

The signal processing unit 140 according to an embodiment of the present invention is installed in a mobile communication terminal or a Bluetooth headset so that short-range wireless communication can be performed. The signal processing unit 140 processes a radio signal received by the antenna built in the signal processing module 100, So that it can be outputted as a signal.

Here, the Bluetooth system uses 2.4 GHz band among ISM (Industrial Scientific Medicine) bands, and supports a data channel and a voice channel. The data channel is an ACL (Asynchronous Connection-Less) channel, and the voice channel is a SCO (Synchronous Connection-Oriented) channel, and the data packet transmitted once is not retransmitted.

For example, the radio signal may be in the range of 88.1 MHz to 107.9 MHz in the case of an FM radio signal band.

3 is a perspective view of a signal processing module according to an embodiment.

3, the signal processing module 100 according to the embodiment may be implemented on a substrate 101 of a multi-layer structure, the signal processing unit 140 may be mounted on a substrate top layer in a chip form, The antenna unit 120 can be mounted around the signal processing unit 140.

In the inner layer of the substrate 101 of the multilayer structure, elements for implementing the filter unit 110 and the matching unit 130 may be disposed. The signal processing unit 140, (120) and the elements mounted on the substrate inner layer can be electrically connected through a via hole.

The antenna unit 120 may have various types of embodiments, and may include a conductor and a ground plate.

The multi-layered substrate 101 may be a PCB substrate or a ceramic substrate.

The ceramic substrate has a high electrical permittivity and a small electrical loss, which is advantageous in minimizing the size of passive elements (R, L, C, filters, balun, etc.) constituting the matching device. In addition, the ceramic substrate is generally manufactured by a low temperature co-fired ceramic (LTCC) substrate manufacturing technique, and the LTCC technique is a method of manufacturing a ceramic substrate It has the advantage of being able to implement passive elements (R, L, C) inside the module, thus enabling the complexity of components and lightness and simplicity.

The antenna unit 120 mounted on the substrate 101 may be formed on one side of the signal processing unit 140 and the antenna unit 120 may be formed on the inner layer of the multilayer substrate 101, A part of the antenna unit 120 may be formed, and another part of the antenna unit 120 may be formed on the substrate top layer, which is electrically connected to a part of the antenna unit 120. A part of the antenna unit 120 and another part of the antenna unit 120 may be electrically connected through a via hole. Thus, the length of the conductor of the antenna can be secured and the radio signal can be stably received.

Although not shown, elements such as a memory, an oscillator, and an electrostatic discharge (ESD) prevention circuit may be further mounted on the substrate 101.

4 is a perspective view of a signal processing module according to another embodiment.

4, the signal processing module 200 according to the embodiment may be implemented on a substrate 201 of a multi-layer structure, and the signal processing unit 240 may be mounted on a top layer of the substrate 201 in a chip form And the antenna unit 220 may be disposed on the top layer.

A signal processing unit 240 and a filter unit 210 for transmitting a radio signal to the signal processing unit 240 may be disposed on the substrate 201.

The antenna unit 220 includes a conductive wire 221, an antenna film 223 on which the conductive wire 221 is disposed, a shield film 225 interposed between the antenna film 223 and the substrate 201, ).

The conductor wirings 221 may be formed of metal wirings, for example, copper wirings.

The shield film 225 may be a dielectric film and shields an electric field generated from the substrate 201.

The antenna film 223 may be a conductive film.

A radio signal is captured and received through a conductor wire 221 formed on the antenna film 223 and the received radio signal is transmitted to a matching unit mounted on the substrate 201 via a feeding point .

In the above embodiments, the antennas receiving the radio signals, for example, the FM radio signals, may have a conductor wiring structure of a certain length and area according to design, and there may be various embodiments of such conductor wiring have.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments of the present invention can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

1 is a block diagram schematically illustrating a signal processing module according to an embodiment.

2 is a block diagram illustrating a signal processing module according to an embodiment of the present invention.

3 is a perspective view of a signal processing module according to one embodiment.

4 is a perspective view of a signal processing module according to another embodiment.

Description of the Related Art [0002]

100, 200: signal processing module 101, 201: substrate

110, 210: filter unit 120, 220: antenna unit

130: matching unit 140, 240: signal processing unit

141: switching section 143: received signal processing section

145: transmission signal processing unit 147: radio signal processing unit

149: Baseband processing section 221: Conductor wiring

223: Antenna film 225: Shield film

Claims (8)

An antenna unit for receiving a first signal of a radio band; A filter unit for receiving a wireless signal and filtering a second signal of the Bluetooth band; A signal processing unit for receiving the first signal from the antenna unit and demodulating the first signal into an audio signal, and receiving and processing the second signal from the filter unit; And And a multilayered substrate on which the filter unit is mounted on the inner layer and the antenna unit and the signal processing unit are mounted on a top layer, The antenna unit includes: An antenna film on which conductor wirings are mounted, and a shield film disposed between the antenna film and the substrate of the multilayer structure. The method according to claim 1, Further comprising a matching unit connected to the antenna unit for matching the impedance of the received first signal and transmitting the first signal to the signal processing unit. The method according to claim 1, Wherein the signal processing unit comprises: a switching unit for separating the second signal into a reception signal and a transmission signal; A received signal processing unit for processing the received signal; A transmission signal processing unit for processing the transmission signal; And Further comprising a baseband processing unit connected to the reception signal processing unit, the transmission signal processing unit, and the antenna unit. The method according to claim 1, Wherein the first signal is an FM radio signal. 3. The method of claim 2, Wherein the matching unit is mounted on an inner layer of the substrate of the multilayer structure, Wherein the matching unit is connected to the antenna unit and the filter unit is connected to the signal processing unit through a via hole formed in the substrate of the multi-layer structure. 3. The method of claim 2, Wherein the conductor wire captures a radio signal and the radio signal is transmitted to the matching section via a feeding point. The method according to claim 1, Wherein the conductor wiring is a copper wiring, Wherein the shield film is a dielectric film. The method according to claim 1, Wherein the filter section comprises a saw-tooth (SAW) filter.

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