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Methods for Increasing RF Throughput Via Usage of Tunable Filters

a technology of tunable filter and throughput, which is applied in the field of rf (radio frequency) circuits, can solve the problems of increasing complexity of radio frequency (rf) devices such as cell phone transmitters, complex modulation schemes, and modulation bandwidths, and achieves the effects of reducing radio frequency interference, and reducing the interference of the transmitting rf signal

Inactive Publication Date: 2015-08-20
PSEMI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent describes a way to reduce interference between different RF systems in a circuit arrangement. This is achieved by using tunable notch filters that can be adjusted based on the characteristics of the RF signals from other systems to reduce interference with the system of interest. The technical effect is improved performance and reliability of RF circuits in arrangements with multiple RF systems.

Problems solved by technology

Radio frequency (RF) devices, such as cell phone transmitters, are becoming increasingly complex due to additional frequency bands, more complex modulation schemes, higher modulation bandwidths, and the introduction of data throughput improvement schemes such as simultaneous RF transmission and / or reception within a same or different, but closely spaced, bands or channels within a band (e.g. voice, data), and aggregate transmission wherein information is multiplexed over parallel RF transmissions.
Due to the high integration and closely spaced transmit / receive paths of a front-end stage used in such RF devices, RF signal interference from neighboring paths, either receive or transmit, can influence RF signal of a transmit / receive path (e.g. via intermodulation) and therefore affect (e.g. reduce) a corresponding throughput by increasing spectrum usage within a frequency band and therefore limiting the number of simultaneous RF transmission and / or reception (e.g. number of usable channels) within a frequency band.

Method used

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  • Methods for Increasing RF Throughput Via Usage of Tunable Filters
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  • Methods for Increasing RF Throughput Via Usage of Tunable Filters

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Embodiment Construction

[0028]Throughout this description, embodiments and variations are described for the purpose of illustrating uses and implementations of the inventive concept. The illustrative description should be understood as presenting examples of the inventive concept, rather than as limiting the scope of the concept as disclosed herein.

[0029]As used in the present disclosure, the terms “switch ON” and “activate” may be used interchangeably and can refer to making a particular circuit element electronically operational. As used in the present disclosure, the terms “switch OFF” and “deactivate” may be used interchangeably and can refer to making a particular circuit element electronically non-operational. As used in the present disclosure, the terms “amplifier” and “power amplifier” may be used interchangeably and can refer to a device that is configured to amplify a signal input to the device to produce an output signal of greater magnitude than the magnitude of the input signal.

[0030]The prese...

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PUM

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Abstract

Methods and devices are described for increasing RF throughput in a multiple RF paths RF transmit / receive system with a plurality RF transmit / receive systems. In one case a tunable notch filter is used to reduce channel interference between the plurality of RF transmit / receive systems.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application is related to U.S. patent application Ser. No. ______ entitled “Devices and Methods for Duplexer Loss Reduction” (Attorney Docket No. PER-100-PAP) filed on even date herewith and incorporated herein by reference in its entirety. The present application is also related to U.S. patent application Ser. No. ______ entitled “Integrated Tunable Filter Architecture” (Attorney Docket No. PER-115-PAP) filed on even date herewith and incorporated herein by reference in its entirety.[0002]The present application may be related to U.S. Pat. No. 6,804,502, issued on Oct. 12, 2004 and entitled “Switch Circuit and Method of Switching Radio Frequency Signals”, the disclosure of which is incorporated herein by reference in its entirety. The present application may also be related to U.S. Pat. No. 7,910,993, issued on Mar. 22, 2011 and entitled “Method and Apparatus for use in improving Linearity of MOSFET's using an Accumulated Cha...

Claims

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Application Information

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IPC IPC(8): H04B15/00H04B7/02H04B7/015
CPCH04B1/525H04B7/02H04B1/44H04B17/12H03F1/301H03F3/04H04B7/015H04B15/005H04B1/18H03F1/30H03F3/193H03F3/21H03F2200/451H03F2200/471H03F2200/555H03F3/195H03F3/213H03F2200/18H03F2200/456H04L27/20
Inventor NOBBE, DAN WILLIAM
Owner PSEMI CORP
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