The present invention relates to a broadband coupled-line coupler for antennas used in a wireless communications service and, more specifically, to a broadband coupled-line coupler which has open stubs individually connected to a main line and to a coupled line, and divides a single input signal...
The present invention discloses a miniature high directivity multi-band coupled-line coupler for RF power amplifier module application. The coupler utilizes a three-coupled-line structure, with a first RF line designated coupled line for the GSM 900 MHZ band, a second RF line designated coupled ...
A new approach for designing a parallel coupled-line coupler with controllable bandwidth is presented. The proposed circuit consists of one coupled-line section and four open- or short-circuited stubs tapped at the ends of coupled lines. The adjustable range of fractional bandwidth is from 7% to...
The design of coupled-line directional couplers having strong coupling requires, however, a multilayer technology to allow for sufficient mutual coupling of the coupler's conductors. The realization of such couplers has been widely described in a number of papers, where different dielectric structures ...
This study presents a novel planar coupled-line directional coupler with tunable both power division ratio and operating frequency, which is achieved using microstrip technology for the first time. Its tunability of the operating frequency and the power division ratio, or coupling ratio, can be indep...
Chapter7:DirectionalCoupler 1)2)3)4)5)6)7)8)CoupledLineEvenandOddModeCoupledLineEvenModeCoupledLineOddModeEvenandOddModeAnalysisCoupledLineDirectionalCouplersEvenandOddModeDCVoltageAnalysisDirectionalCouplerExample CoupledLine-EvenandOddMode coupledisolated 3 4 1 input 2 through Averycommontypeofpowerdivider...
Chapter7:DirectionalCoupler 1)2)3)4)5)6)7)8)CoupledLineEvenandOddModeCoupledLineEvenModeCoupledLineOddModeEvenandOddModeAnalysisCoupledLineDirectionalCouplersEvenandOddModeDCVoltageAnalysisDirectionalCouplerExample CoupledLine-EvenandOddMode coupledisolated 3 4 1 input 2 through Averycommontypeofpowerdivider...
The designed prototype is a 0-dB microstrip coupler over a wide bandwidth of 66% from 2GHz to 4GHz centered at 3GHz. The length of the coupled line is nearly λg/2 and length of the stubs is 2 mm, which make it more compact than other forward couplers have been proposed. To ...
A superconducting on-chip coiled coupled-line 90° hybrid coupler is made of a series array of repeated cells of coiled transmission lines that are inductively and capacitively coupl
An analysis is made of a three-section directional coupler which can be considered a series connection of three eight-terminal networks. Networks 1 and 3 c... AP Gorbachev,AM Kupriianov - 《Radioehlektronika》 被引量: 0发表: 1987年 Soliton switching in fiber nonlinear directional couplers Ti...