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Ceramic waveguide filter

A ceramic and waveguide technology, applied in the field of ceramic waveguide filter devices

Pending Publication Date: 2022-02-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, there are few options to reduce the CTE difference because from a filter design point of view, the lower the CTE that a CWG has, the more stable the performance of the CWG filter / duplexer over the entire temperature range, on the other hand, Cannot simply replace the current widely used RF PCB material (such as FR4 or Megatron 6) with any new lower CTE PCB material

Method used

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Embodiment Construction

[0032] The embodiments set forth below represent information to enable one skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of this disclosure.

[0033] At least some of the following abbreviations and terms may be used in the present disclosure.

[0034] • 2D two-dimensional

[0035] • 3GPP Third Generation Partnership Project

[0036] • 5G fifth generation

[0037] • AAS Advanced Antenna System

[0038] • ASIC application specific integrated circuit

[0039] • CWG ceramic waveguide

[0040] • FDD frequency division duplex

[0041] • BPF bandpass filter

[0042] • LPF low pass filter

[0043...

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PUM

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Abstract

A composite electronic device comprises a ceramic waveguide, CWG, device having at least two input / output, I / O, ports; and a ceramic stripline, CS, device comprising at least one stripline transmission paths having at least two I / O ports. The CS device is affixed to the CWG device such that at least one of the I / O ports of the CWG device is electrically connected to a corresponding one I / O port of the CS device.

Description

technical field [0001] The present disclosure relates to ceramic waveguide filter devices. Background technique [0002] Compared with other types of filters (such as air cavity filters, dielectric cavity filters and ceramic integral filters, etc.), due to its smaller size, lower weight and lower cost and its relatively high Q-factor, ceramic waveguide (CWG) filters are promising solutions for 5G Advanced Antenna System (AAS) radio front-end designs. [0003] figure 1 A typical frequency division duplex (FDD) type radio front end 100 is shown comprising a CWG duplexer 102 coupled to an antenna 104 . A power amplifier (PA) 106 is coupled to the CWG duplexer 102 via a transmit low pass filter (Tx LPF) 108 and a low noise amplifier (LNA) 110 is coupled directly to the CWG duplexer 102 or optionally via a receive low pass filter CWG duplexer 102 is coupled to CWG duplexer 112 . [0004] The CWG duplexer 102 is composed of a transmission bandpass filter (Tx BPF) 114 and a rec...

Claims

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Application Information

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IPC IPC(8): H01P1/213H01P1/20H01P5/08
CPCH01P1/2135H01P1/213H01P1/2002H01P5/087H01P3/08H01P3/16
Inventor 简春云周蜜
Owner TELEFON AB LM ERICSSON (PUBL)