Communication equipment and filter thereof
A filter and filter cavity technology, which is applied in the field of communication, can solve the problems of low isolation and poor out-of-band suppression performance, and achieve the effect of high isolation and reduced volume
Inactive Publication Date: 2021-06-29
ANHUI TATFOOK TECH CO LTD
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Problems solved by technology
[0004] The present application provides a filter to solve the technical problems of poor out-of-band suppression performance and low isolation between filtering branches of filters in the prior art
Method used
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[0066] The following detailed description will be made in conjunction with the accompanying drawings and examples. It is particularly pointed out that the following examples are intended to illustrate the present application, but the scope of the present application is not limited. Similarly, the following examples are only the various embodiments of the present application, not all of the embodiments, and those of ordinary skill in the art are in the scope of the present application without all other embodiments obtained without creative labor.
[0067] The description and claims of the present application and the terms "first", "second", "third", "fourth", etc. in the above drawings are used to distinguish similar objects without Describe a specific order or intern order. It is to be understood that the data such as use can be interchangeable in appropriate, so as to be described herein, for example, in addition to those other than those illustrated or described herein. Moreover...
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The invention discloses communication equipment and a filter thereof. The filter comprises a first filtering branch composed of eleven filtering cavities which are coupled in sequence; a second filtering branch consisting of nine filtering cavities which are coupled in sequence; a third filtering branch composed of eleven filtering cavities which are coupled in sequence; a fourth filtering branch composed of nine filtering cavities which are coupled in sequence; a fifth filtering branch composed of eleven filtering cavities which are coupled in sequence; a sixth filtering branch composed of nine filtering cavities which are coupled in sequence; a seventh filtering branch composed of eleven filtering cavities which are coupled in sequence; and an eighth filtering branch composed of nine filtering cavities which are coupled in sequence. The bandwidths of the first filtering branch, the third filtering branch, the fifth filtering branch and the seventh filtering branch are all located at 1804 Mhz to 1881 Mhz, and the bandwidths of the second filtering branch, the fourth filtering branch, the sixth filtering branch and the eighth filtering branch are all located at 1709 Mhz to 1786 Mhz. By means of the mode, the filter comprises the filtering branches with different bandwidths, and the isolation degree between the filtering branches is high.
Description
Technical field [0001] The present application relates to the field of communication technologies, and more particularly to a communication device and a filter thereof. Background technique [0002] In the mobile communication device, the required signal is modulated to form a modulated signal, and is mounted on a high-frequency carrier signal, and transmitted to the air by the transmitting antenna, and receives the signal received by the antenna, not only Includes the required signal, and also includes harmonics, noise signals of other frequencies. The signal received by the received antenna requires filtering out of the unwanted harmonics and noise signals with the filter. Therefore, the designed filter must accurately control its bandwidth. [0003] The inventors of the present application found in long-term R & D efforts, in order to reduce the volume of the filter, the two or more groups of different frequencies of different frequencies are typically composed of filters, but...
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Login to View More IPC IPC(8): H01P1/208H01P1/209
CPCH01P1/208H01P1/209
Inventor 张海峰杨绍春王磊谢新成
Owner ANHUI TATFOOK TECH CO LTD