Microstrip unequal Wilkinson power divider with 1:11 division ratio

This article introduces a modified Gysel power divider, providing high power division ratios, alongside the advantage of high power handling. To overcome fabrication limitations of high characteristic impedance line, caused by the anticipated high power division ratio, a coupled line structure with two shorts is used. This proposed structure makes closed‐form equations available for design and leads to a simple microstrip fabrication. A 10:1 unequal Gysel power divider is presented and fabricated as a design example and a satisfactory agreement between measurements and simulation results is verified. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2689–2692, 2016

Section: Simulation Results and Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 10:1 unequal gysel power divider/combiner

Kouhpayeh‐Zadeh‐Esfahani

Afrooz

Moradi

2016

“…In modern microwave systems, PDs with arbitrary power splitting ratios are widely applied in mixers, antenna arrays and various types of amplifiers. Many different structures have been proposed to design PDs with arbitrary power splitting ratios. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…Defected ground structure (DGS) and coupling structure are introduced in Refs. to design unequal PDs.…”

Section: Introductionmentioning

confidence: 99%

Filtering Gysel power divider with arbitrary power splitting ratio

Dong

Wang

Zhang

et al. 2018

A novel filtering Gysel power divider (PD) structure based on coupled lines is presented to realize arbitrary power splitting ratio and filtering response. The proposed filtering PD consists of three parallel‐coupled lines, two short‐circuited stubs, two stepped impedance stubs and two grounded isolation resistors. Two transmission zeros (TZs) are introduced by the stepped impedance stubs, which can greatly improve the passband selectivity and out‐of‐band rejection performances. Theoretically, closed‐form equations for the proposed structure are derived based on even‐odd mode method. For verification, two filtering Gysel PDs with equal and unequal power splitting ratios ( PnormalR=1 normalanormalnnormald PnormalR=2) are designed and experimentally demonstrated in this paper.

“…To avoid such fabrication limitations, several techniques have been proposed such as adopting defected ground structures (DGS) under the microstrip line, using coplanar waveguide (CPW) with electromagnetic band gap structures (EBGs), grooving substrate under the strip lines, exploiting coupled lines with two shorts or employing vias, stubs, and so forth. However, all of these techniques suffer from the restricted power division ratio as the highest realized splitting ratio using these techniques is 1:11 and there is no general solution for simplified design process. In this letter, a novel structure of the WPD with the ability to reduce the occupied area and provide high power‐dividing ratio possibility based on asymmetrical composite right/left‐handed (A‐CRLH) coupled transmission lines is proposed, analyzed and designed.…”

Section: Introductionmentioning

confidence: 99%

A compact 1:15 unequal Wilkinson power divider using A‐CRLH coupled lines

Torabi

Dadashzadeh

2017

A novel asymmetric composite right/left‐handed (A‐CRLH) coupled‐line circuit structure for a miniaturized unequal Wilkinson power divider (WPD) with arbitrary large power division ratio and reduced arm's length is proposed. Compared with the traditional unequal WPD, using the A‐CRLH coupled‐line section in the proposed power divider, due to its controllable phase response and characteristic impedances, not only leads to more compact layout but also results in a larger power‐dividing ratio with relaxed line width and separation. The simplified design procedure along with closed form equations based on c‐ and π‐mode analysis and transmission‐line‐based metamaterial theory is derived. For demonstration, a practical A‐CRLH WPD with a high power‐dividing ratio of 1:15 as a typical example, at 1.4 GHz is designed, simulated and fabricated. The occurred area of the implemented power divider is 58.7% smaller than that of the conventional one at the same frequency and its experimental results show good agreement with simulation data.