KR-20260064831-A - ANTENNA SWITCHING MODULE AND ELECTRONIC DEVICE INCLUDING IT

KR20260064831AKR 20260064831 AKR20260064831 AKR 20260064831AKR-20260064831-A

Abstract

The present invention relates to an antenna switching module and an electronic device, and more specifically, may provide an electronic device comprising: an antenna element; a first antenna switching module located between the antenna element and a first amplifier; and a second antenna switching module located between the antenna element and a second amplifier, wherein the first antenna switching module and the second antenna switching module may provide an electronic device in which a bonding wire circuit and a switching circuit are connected in parallel to an impedance matching circuit.

Inventors

박진석
이승찬
오의진
이원섭
임수빈
이민규
박하람

Assignees

전남대학교산학협력단

Dates

Publication Date: 20260508
Application Date: 20241029

Claims (16)

A first antenna switching module located between the antenna element and the first amplifier; and A second antenna switching module located between the antenna element and the second amplifier, comprising: The first antenna switching module above is A first bonding wire circuit connected to the above antenna element; A first impedance matching circuit connected between the first amplifier and the first bonding wire; and It includes a first switching circuit connected between the first bonding wire circuit and the first impedance matching circuit, and The above second antenna switching module is A second bonding wire circuit connected to the above antenna element; A second impedance matching circuit connected between the second amplifier and the second bonding wire; and An antenna switching module comprising a second switching circuit connected between the second bonding wire circuit and the second impedance matching circuit.
In Article 1, The above first bonding wire circuit is It includes two capacitors and one inductor, The above two capacitors and the above one inductor are an antenna switching module connected to a pi network.
In Article 1, The first bonding wire circuit is connected in parallel with the first switching circuit, and The first bonding wire circuit and the first switching circuit connected in parallel are an antenna switching module connected in series with the first impedance matching circuit.
In Article 1, The above first switching circuit is A first DC blocking capacitor connected to the first impedance matching circuit; A second DC blocking capacitor connected to ground; A transistor connected in series between the first and second DC blocking capacitors; and A plurality of resistors, each connected to the transistor or the first DC blocking capacitor or the second DC blocking capacitor. Antenna switching module including
In Article 4, The above first switching circuit is An antenna switching module further comprising a resonant inductor connected between the first and second DC blocking capacitors.
In Article 4, The above second bonding wire circuit is An antenna switching module with two capacitors and one inductor connected to a Pi network.
In Article 6, The second bonding wire circuit is connected in parallel with the second switching circuit, and The second bonding wire circuit and the second switching circuit connected in parallel are an antenna switching module connected in series with the second impedance matching circuit.
In Article 7, The above second switching circuit is Two DC blocking capacitors, each connected to the second impedance matching circuit and ground; A plurality of transistors connected in series between the two DC blocking capacitors and controlled by a second voltage; and An antenna switching module comprising a plurality of resistors connected between the transistor and the common voltage.
In Article 8, An antenna switching module in which the first voltage and the second voltage are applied at complementary levels.
In Article 9, The above common voltage is An antenna switching module having an intermediate level between the first voltage and the second voltage.
In Article 8, The above second switching circuit is An antenna switching module further comprising a resonant inductor connected between the two DC blocking capacitors.
In Article 1, An antenna switching module in which the on-off of the first switching circuit operates complementarily to the on-off of the second switching circuit.
Antenna element; A first antenna switching module located between the antenna element and the first amplifier; and A second antenna switching module located between the antenna element and the second amplifier, comprising: The first antenna switching module and the second antenna switching module are electronic devices in which a bonding wire circuit and a switching circuit are connected in parallel to an impedance matching circuit.
In Article 13, The first antenna switching module above is A first bonding wire circuit connected to the above antenna element; A first impedance matching circuit connected between the first amplifier and the first bonding wire; and It includes a first switching circuit connected between the first bonding wire circuit and the first impedance matching circuit, and The above second antenna switching module is A second bonding wire circuit connected to the above antenna element; A second impedance matching circuit connected between the second amplifier and the second bonding wire; and An electronic device comprising a second switching circuit connected between the second bonding wire circuit and the second impedance matching circuit.
In Article 13, The above-mentioned first amplifier is an electronic device that is a power amplifier.
In Article 13, The above second amplifier is an electronic device that is a low-noise amplifier.

Description

Antenna switching module and electronic device including the same The present invention relates to an antenna switching module and an electronic device, and more specifically, to an antenna switching module and an electronic device capable of minimizing insertion loss between a bonding wire and an antenna switch. As the information society develops, the demand for electronic devices capable of wireless communication is increasing in various forms. With the increasing functionality of multi-frequency bands in such electronic devices as mobile phones, the performance of high-frequency front-end circuits that process high-frequency signals is becoming critical. Meanwhile, the antenna of the electronic device is connected to the antenna switch via a bonding wire. In this case, since both the bonding wire and the antenna switch have insertion losses, a disadvantage arises in that the total insertion loss of the electronic device increases. In particular, the bonding wire has a problem in that its insertion loss increases as the communication frequency increases. In particular, as the next-generation mobile communication field demands high capacity, high-speed data transmission, and low latency, research is concentrating on high-frequency bands with millimeter wavelengths. To achieve this, the performance of transmitter and receiver components in the high-frequency band is critical. At this time, antenna switches that change the transmission and reception paths of wireless signals are becoming an essential component in next-generation communication because they are used for various purposes. In particular, since antenna switches are located at the end of the transmission path and the beginning of the reception path, significantly affecting the signal gain and noise characteristics of the entire electronic device, the insertion loss of the antenna switch is very important. FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention. FIG. 2 is a block diagram of an antenna switching module in an electronic device according to an embodiment of the present invention. FIG. 3 is a diagram showing a circuit of an antenna switching module in an electronic device according to an embodiment of the present invention. FIG. 4 is a diagram illustrating the operation of an antenna switching module in an electronic device according to an embodiment of the present invention. Figure 5 is a graph comparing the insertion loss when using the antenna switching module of the present invention and when using a conventional switch. Figure 6 is a graph showing the total insertion loss value of the present invention according to the change in inductance of the bonding wire. Figure 7 is the result of simulating the isolation degree according to frequency when using the antenna switching module of the present invention and when using a conventional switch. FIG. 8 is a diagram showing a circuit of an antenna switching module in an electronic device according to another embodiment of the present invention. Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description may be omitted. Where terms such as "comprising," "having," or "consisting of" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it may include a plural unless there is a special explicit description otherwise. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the present invention. These terms are used merely to distinguish the components from other components, and the essence, order, sequence, or number of the components are not limited by such terms. In describing the positional relationship of components, where it is stated that two or more components are "connected," "combined," or "joined," it should be understood that while the two or more components may be directly "connected," "combined," or "joined," they may also be "connected," "combined," or "joined" with other components "intervened." Here, the other components may be included in one or more of the two or more components that are "connected," "combined," or "joined" with one another. In describing the temporal flow relationship regarding components, methods of operation, or methods of production, for example, when the temporal or sequential relationship is described using "after," "following," "next," or "before," it may include cases where the relationship is not continuous u