Filter, receiver, transmitter and transceiver

Abstract

The embodiment of the invention provides a filter, a receiver, a transmitter and a transceiver. The filter comprises a resonant cavity assembly, a micro-strip filer assembly and two connecting elements. The resonant cavity assembly includes at least two resonant cavities connected in parallel and each resonant cavity is provided with a resonator and a tuning screw; the micro-strip filer assembly includes a medium substrate and a micro strip arranged on the medium substrate; and one connecting element enables one end of the micro strip and the resonator of one resonant cavity to be connected in matching mode and the other connecting element enables the other end of the micro strip and the resonator of the other resonant cavity to be connected in a matching mode. The impedance of the resonant cavity assembly is less than that of the micro-strip filer assembly. According to the invention, the miniaturization of the general size can be realized and the power capacity index can also be ensured.

Description

technical field [0001] The present invention relates to the field of communication, and more particularly, to a filter, receiver, transmitter and transceiver. Background technique [0002] The duplexer of the transceiver module of the base station is composed of a radio frequency (Radio Frequency, referred to as "RF") cavity filter, which is generally located on the back structure of the transceiver board, and is used for single-channel high-power signal transmission, including Transmit channel filter and receive channel filter. [0003] With the development of multi-carrier and multi-standard mobile communications, the demand for miniaturization of radio frequency modules tends to be strong. There are metal cavity filters (commonly known as coaxial cavity filters) and non-metal cavity filters. For metal cavity filters, the metal cavity has good high-power characteristics and insertion loss, but its huge size poses a huge challenge to the competitiveness of next-generation ...

AI Technical Summary

Problems solved by technology

For metal cavity filters, the metal cavity has good high power characteristics and insertion loss, but its huge size poses a huge challenge to the competitiveness of next-generation products

There are many types of non-metal cavity filters. Although the volume is small, the power is low. For example, the integrated dielectric filter has a power of only 10~50W, and the SAW filter is below 1W.

Suspended microstrip filters have appeared in recent years. Since the power capacity of microstrip filters is limited by factors such as the temperature resistance of the plate, the width and thickness of the copper skin, it can only reach about 80W at present, and it is difficult to reach the average power of the cavity. 100W or more required

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