阅读说明：本技术 一种基于薄膜体声波谐振器技术的滤波器构成的双工器及设备 (Duplexer and equipment formed by filters based on film bulk acoustic resonator technology ) 是由 胡孝伟 代文亮 付董董 于 2020-06-15 设计创作，主要内容包括：本发明的一种基于薄膜体声波谐振器技术的滤波器构成的双工器,包括用于安装元器件的基板；安装于基板上的第一滤波器T2、第二滤波器T4、第一IPD封装器件T1和第二IPD封装器件T3；第一滤波器T2通过与第二端口之间的传输线等效电路T02与第二端口TX连接,第二滤波器T4通过与第三端口之间的传输线等效电路T03与第三端口RX连接,第一IPD封装器件T1和第二IPD封装器件T3通过与第一端口之间的传输线等效电路T01与天线端口ANT连接,第一IPD封装器件T1和第二IPD封装器件T3是由集总参数器件构成的滤波器,用于调整通过第一滤波器和第二滤波器的信号的相位,防止信号间互相干扰。(The invention relates to a duplexer formed by a filter based on the film bulk acoustic resonator technology, which comprises a substrate for mounting components; a first filter T2, a second filter T4, a first IPD packaged device T1 and a second IPD packaged device T3 mounted on the substrate; the first filter T2 is connected to the second port TX through a transmission line equivalent circuit T02 with the second port, the second filter T4 is connected to the third port RX through a transmission line equivalent circuit T03 with the third port, the first and second IPD packaged devices T1 and T3 are connected to the antenna port ANT through a transmission line equivalent circuit T01 with the first port, and the first and second IPD packaged devices T1 and T3 are filters formed of lumped parameter devices for adjusting phases of signals passing through the first and second filters to prevent mutual interference between the signals.)

1. A duplexer formed by a filter based on a film bulk acoustic resonator technology is characterized in that: comprises that

A substrate for mounting components;

a first filter T2, a second filter T4, a first IPD packaged device T1 and a second IPD packaged device T3 mounted on the substrate;

the first IPD package device T1 is connected to the first filter T2, the second IPD package device T3 is connected to the second filter T4, the first filter T2 is connected to the second port TX through the transmission line equivalent circuit T02 connected to the second port, the second filter T4 is connected to the third port RX through the transmission line equivalent circuit T03 connected to the third port RX, the first IPD package device T1 and the second IPD package device T3 are connected to the antenna port ANT through the transmission line equivalent circuit T01 connected to the first port, and the first IPD package device T1 and the second IPD package device T3 are filters formed by lumped parameter devices for adjusting phases of signals passing through the first filter and the second filter and preventing mutual interference between signals.

2. The duplexer of claim 1, wherein the duplexer comprises a filter based on film bulk acoustic resonator technology, and comprises: the first IPD package device T1 includes a first inductor L1, a second inductor L2 and a first capacitor C1, and two ends of the first capacitor C1 are grounded through a first inductor L1 and a second inductor L2, respectively.

3. The duplexer of claim 1, wherein the duplexer comprises a filter based on film bulk acoustic resonator technology, and comprises: the second IPD package device T3 includes a fifth inductor L5, a sixth inductor L6 and a second capacitor C2, and two ends of the second capacitor C2 are grounded through a fifth inductor L5 and a sixth inductor L6, respectively.

4. The duplexer of claim 1, wherein the duplexer comprises a filter based on film bulk acoustic resonator technology, and comprises: the first filter T2 includes four series-arm resonators, four parallel-arm resonators, a third inductance, and a fourth inductance, the four series-arm resonators are a first series-arm resonator Y1, a second series-arm resonator Y2, a third series-arm resonator Y3, and a fourth series-arm resonator Y4, the four parallel-arm resonators are a first parallel-arm resonator P1, a second parallel-arm resonator P2, a third parallel-arm resonator P3, and a fourth parallel-arm resonator P4, the third inductance L3 is provided between the first parallel-arm resonator P1, the second parallel-arm resonator P2, and a ground terminal, and the fourth inductance L4 is provided between the third parallel-arm resonator P3, the fourth parallel-arm resonator P4, and the ground terminal.

5. The duplexer of claim 1, wherein the duplexer comprises a filter based on film bulk acoustic resonator technology, and comprises: the second filter T4 includes four series-arm resonators, four parallel-arm resonators, a seventh inductance, and an eighth inductance, the four series-arm resonators are a fifth series-arm resonator Y5, a sixth series-arm resonator Y6, a seventh series-arm resonator Y7, and an eighth series-arm resonator Y8, the four parallel-arm resonators are a fifth parallel-arm resonator P5, a sixth parallel-arm resonator P6, a seventh parallel-arm resonator P7, and an eighth parallel-arm resonator P8, the seventh inductance is provided between the fifth parallel-arm resonator P5, the sixth parallel-arm resonator P6, and the ground terminal, and the eighth inductance is provided between the seventh parallel-arm resonator P7, the eighth parallel-arm resonator P8, and the ground terminal.

6. The duplexer of claim 1, wherein the duplexer comprises a filter based on film bulk acoustic resonator technology, and comprises: the first filter T2 and the second filter T4 are film bulk acoustic wave resonators arranged in a ladder shape.

7. The duplexer of claim 1, wherein the duplexer comprises a filter based on film bulk acoustic resonator technology, and comprises: the first IPD packaging device T1 and the second IPD packaging device T3 are composed of capacitance and inductance elements which are different in combination.

8. An electronic device, characterized in that: comprising the duplexer of any one of claims 1 to 7.

Technical Field

The invention belongs to the technical field of duplexers, and particularly relates to a duplexer and equipment consisting of a filter based on a film bulk acoustic resonator technology.

Background

With the rapid development of wireless communication technology towards high frequency and high speed, and the development of electronic components towards miniaturization and low power consumption, Film Bulk Acoustic Resonator (FBAR) filters are increasingly used in wireless communication as new-generation wireless radio frequency filters, duplexers and multiplexer solutions. FBAR radio frequency filters employing silicon substrates and micro-electromechanical systems (MEMS) fabrication techniques are widely favored for superior performance and small device sizes.

With the increasingly stringent requirements for volume and performance in the consumer electronics industry, it is possible to embed miniature rf modules with more functions in portable consumer electronics products. The FBAR technology can realize a smaller size and higher performance, far superior to SAW (surface acoustic wave) and dielectric duplexer, etc., which compete therewith, and realize an extremely small volume. This volume advantage helps cell phone manufacturers to produce ultra-thin phones while facilitating the integration of advanced multimedia functions to meet the user's needs. The duplexer plays a key role in mobile phones and data cards, not only isolates input signals from output signals, but also can simultaneously realize bidirectional voice or data transmission.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to solve the problem that the existing duplexer is large in size and difficult to meet requirements.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a duplexer composed of a filter based on film bulk acoustic resonator technology, which comprises

A substrate for mounting components;

a first filter T2, a second filter T4, a first IPD packaged device T1 and a second IPD packaged device T3 mounted on the substrate;

the first IPD package device T1 is connected to the first filter T2, the second IPD package device T3 is connected to the second filter T4, the first filter T2 is connected to the second port TX through the transmission line equivalent circuit T02 between the second port, the second filter T4 is connected to the third port RX through the transmission line equivalent circuit T03 between the third port, and the first IPD package device T1 and the second IPD package device T3 are connected to the antenna port ANT through the transmission line equivalent circuit T01 between the first port.

Preferably, the first IPD package device T1 includes a first inductor L1, a second inductor L2 and a first capacitor C1, and two ends of the first capacitor C1 are grounded through a first inductor L1 and a second inductor L2, respectively. The circuit can realize link impedance matching, provide a phase matching function and realize good matching and lower insertion loss in a pass band.

Preferably, the second IPD package device T3 includes a fifth inductor L5, a sixth inductor L6 and a second capacitor C2, and two ends of the second capacitor C2 are grounded through the fifth inductor L5 and the sixth inductor L6, respectively. The circuit can realize link impedance matching, provide a phase matching function and realize good matching and lower insertion loss in a pass band.

Preferably, the internal components of the IPD package device are all composed of different combinations of capacitance and inductance elements. Different combination modes of the IPD packaging device can realize different link impedance matching, not only can provide a phase matching function, but also can realize good matching performance in a pass band so as to achieve lower insertion loss and return loss.

Preferably, the first filter T2 includes four series-arm resonators, four parallel-arm resonators, a third inductance L3 and a fourth inductance L4, the four series-arm resonators include a first series-arm resonator Y1, a second series-arm resonator Y2, a third series-arm resonator Y3 and a fourth series-arm resonator Y4, the four parallel-arm resonators include a first parallel-arm resonator P1, a second parallel-arm resonator P2, a third parallel-arm resonator P3 and a fourth parallel-arm resonator P4, the third inductance L3 is provided between the first parallel-arm resonator P1, the second parallel-arm resonator P2 and the ground terminal, and the fourth inductance L4 is provided between the third parallel-arm resonator P3, the fourth parallel-arm resonator P4 and the ground terminal.

Preferably, the second filter T4 includes four series-arm resonators, four parallel-arm resonators, a seventh inductance L7 and an eighth inductance L8, the four series-arm resonators are a fifth series-arm resonator Y5, a sixth series-arm resonator Y6, a seventh series-arm resonator Y7 and an eighth series-arm resonator Y8, the four parallel-arm resonators are a fifth parallel-arm resonator P5, a sixth parallel-arm resonator P6, a seventh parallel-arm resonator P7 and an eighth parallel-arm resonator P8, the seventh inductance is provided between the fifth parallel-arm resonator P5 and the sixth parallel-arm resonator P6 and the ground terminal, and the eighth inductance is provided between the seventh parallel-arm resonator P7 and the eighth parallel-arm resonator P8 and the ground terminal.

Preferably, the first filter T2 and the second filter T4 are both film bulk acoustic resonators arranged in a stepped manner.

Preferably, the transmission line equivalent circuit model T01 includes a ninth inductor L01 and a third capacitor C01, and one end of the third capacitor C2 is grounded through the ninth inductor L01; the equivalent circuit model T02 includes a tenth inductor L02 and a fourth capacitor C02, one end of the fourth capacitor C02 is grounded through the tenth inductor L02; the equivalent circuit model T03 includes an eleventh inductor L03 and a fifth capacitor C03, and one end of the fifth capacitor C03 is grounded through the eleventh inductor L03.

An electronic device, the duplexer of any preceding claim.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

the invention relates to a duplexer formed by a filter based on the film bulk acoustic resonator technology, which comprises a substrate for mounting components; a first filter T2, a second filter T4, a first IPD packaged device T1 and a second IPD packaged device T3 mounted on the substrate; the first IPD package device T1 is connected to the first filter T2, the second IPD package device T3 is connected to the second filter T4, the first filter T2 is connected to the second port TX through the transmission line equivalent circuit T02 between the second port, the second filter T4 is connected to the third port RX through the transmission line equivalent circuit T03 between the third port, the first IPD package device T1 and the second IPD package device T3 are connected to the antenna port ANT through the transmission line equivalent circuit T01 between the first port, and the first IPD package device T1 and the second IPD package device T3 are filters formed of lumped parameter devices for adjusting phases of signals passing through the first filter T2 and the second filter T4 to prevent mutual interference between the signals.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a block diagram of an internal circuit according to the first embodiment;

fig. 3 is a circuit diagram of different combinations of lumped elements inside an IPD package device according to the first embodiment;

FIG. 4 is a circuit diagram of a ladder filter according to the first embodiment;

fig. 5 is a diagram of a model of an equivalent inductance of the ground terminal of the ladder filter according to the first embodiment;

fig. 6 is a circuit diagram of different combinations of lumped elements inside the IPD package device according to the second embodiment;

fig. 7 is a diagram of an equivalent inductance model of the ground terminal of the ladder filter according to the second embodiment;

fig. 8 is a block diagram of an internal circuit of the second embodiment.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.