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Radio frequency power divider and combiner circuit

A power divider and circuit technology, applied in the direction of circuits, electrical components, waveguide devices, etc., can solve the problems of limited utilization, reduced isolation between ports, digital signal outflow and performance degradation, etc.

Inactive Publication Date: 2012-06-13
RFTELLIGENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a common via can be used, the isolation between ports will be reduced
Active inductors can be replaced, but the additional current draw and performance degradation of digital signals with envelope variations limits its utilization
[0009] Existing power divider circuits are disadvantageous in a number of different ways

Method used

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  • Radio frequency power divider and combiner circuit
  • Radio frequency power divider and combiner circuit
  • Radio frequency power divider and combiner circuit

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[0036] Generally, in the aforementioned architecture, the resonant capacitor 24 and the compensating resistor 26 are connected in parallel between the first inductor L1 and the second inductor L2 to define a parallel resonance. According to a first embodiment, the resonant capacitor 24 has a capacitance value of 1.55 picofarads. In the exemplary embodiment, the predetermined operating frequency is 2.45 GHz, and the parallel resonance isolates the first split port P1 from the second split port P2. The compensation resistor 26 is connected to the resonant capacitor 24 in series, and the first end 26 a of the compensation resistor 26 is connected to the second end 24 b of the resonant capacitor 24 . The value of the compensation resistor 26 is selected to maximize the isolation between the first split port P1 and the second split port P2, and in this embodiment, the compensation resistor 26 has a resistance value of 17 ohms. An embodiment of the present invention has a 20 dB iso...

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PUM

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Abstract

A radio frequency (RF) power splitter circuit is disclosed. The circuit has a predefined operating frequency, and includes a first split port, a second split port, and a common port. A first inductor is connected to the first split port and the common port, and a second inductor is connected to the second split port and the common port. Additionally, there is a resonant capacitor and a compensation resistor connected in parallel across the first split port and the second split port. A parallel resonant circuit is thus defined at the predefined operating frequency.

Description

[0001] Cross-Referenced Related Applications [0002] This application relates to and claims US Provisional Application No. 61 / 164,774, filed March 30, 2009, entitled RF Power Divider-Combiner on a Small Chip, which is hereby incorporated by reference. technical field [0003] The present invention relates generally to radio frequency (RF) devices, and more particularly to a small on-chip RF splitter and combiner circuit. Background technique [0004] Modern wireless communication systems employ various complex, tightly integrated radio frequency circuits, which are typically divided into multiple links, each processing the signals thereon separately. For example, a conventional mobile phone may use a single antenna to receive a wireless (802.11x) and a Bluetooth (802.15.11) signal, use a separate transceiver to down-convert the RF signal, demodulate the baseband signal, and decode the baseband The digital data represented by a signal. In order for the WLAN signal to be pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P3/08
CPCH03H7/48
Inventor 奥莱克桑德·戈尔巴乔夫
Owner RFTELLIGENT