Venkata Kishore Kothapudi ¹, Vijay Kumar ¹, Mukundala Sai Rohit ¹, Dangeti Anu Preetham ¹

Affiliations
1 School of Electronics Engineering, VIT University, Vellore - 632014, Tamil Nadu, IN

Abstract

Objectives: In this letter, the achievability of an unequal power divider utilizing a microstrip innovation as a part of the P/UHF band is designed. Methods/Statistical Analysis: Unequal power divider with 3-alternatives/approaches is composed in this research work, these are traditional microstrip configuration, power divider with input transformer and discretionary outline impedance (A-arbitary) is acquainted with control high impedance values and Power divider with general outline comparisons (Determination of Z1 or Z2 with required Impedances). Findings: At long last Power divider with general outline comparisons is figured it out. In this case the impedance of any one of the quarter wave impedance transmission line chosen is 30/35Ω which is most appropriate for impedance confinement of 10-60 ohm with a large power partitioning proportion radar applications where the side projection levels are most negative required. The unequal amplitudes of the 8-way power divider is designed utilizing Taylors 1-parameter method to get the side projections levels – 17 dB down from the fundamental beam. Application/Improvements: The 2-way and 8-way power divider was simulated using Method of Moments based Zealand IE3D software (MOM) an aggregate bandwidth of 40MHz was accomplished at an resonant frequency 0.43GHz. The simulated 2-way and 8-way unequal power divider is simulated and results are given. A prototype of 2-way unequal power divider with power levels P1 and P2 are 0.79622 and 0.89352 with power ratio of 1.1222 is fabricated to verify our proposed design. Measured results are given good agreement with simulated results to confirm our proposed design.

Keywords

Arbitary, Impedance, MOM, Unequal, Zealnd IE3D.

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Venkata Kishore Kothapudi ¹, Vijay Kumar ¹, Dangeti Anu Preetham ¹, Mukundala Sai Rohit ¹

Affiliations
1 School of Electronics Engineering, VIT University, Vellore - 632014, Tamil Nadu, IN

Abstract

Background/Objectives: This letter describes the design simulation and fabrication the design, simulation and fabrication of an P-band frequency band unequal amplitude 90° hybrid coupler. This hybrid coupler is used to design a feeder network with 4 output ports for T-Radar Wind Profiler Operating at 430MHz is achieved with a frequency bandwidth exceeding 50MHz. Methods/Statistical Analysis: The hybrid coupler is designed with the help of conventional microstrip technology. Measured and simulation results has been provided for the components (Equal amplitude hybrid couplers, Unequal amplitude hybrid coupler) used to implement the feeder network. The microstrip hybrid coupler with unequal amplitudes with 90° phase difference is achieved with varying impedances of the one of the arms in a hybrid coupler. Findings: The proposed coupler is easily fabricated on the glass epoxy PCB without any lumped element. There is a good agreement between measured, simulated and theoretical prediction validated the feasible configuration of the proposed coupler and amplitude weights are designed based on array synthesis so called Taylors 1-parameter method for side lobe level -17 dB down from the main beam. A full wave EM simulator zeland IE3D V12.02 and Ansoft designer is used for designing hybrid coupler. Applications/ Improvements: The fabricated coupler is best suited for shared aperture antenna beam forming network and Feeder network using hybrid coupler for 430 MHz Radar applications. To demonstrate our design theory, a practical unequal power hybrid coupler is designed, simulated and fabricated. The measured results shows that the Return losses are larger than 25dB. The power couplings S21 and S31 is -4.38 dB and -3.17 dB and the output phase difference is 88.3180 at the operating frequency.

Keywords

Coupling and Returnloss, IE3D, Troposphere, Unequal Hybrid Coupler.

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