Wideband Planar Hybrid With Ultralow Amplitude Imbalance
Journal article, 2017

We present a new design approach for the 90° directional coupler with very low amplitude imbalance. The primary feature of this quadrature coupler is the introduction of a controllable ripple in the operational band for achieving a better overall amplitude balance. This design concept is demonstrated through a 90° branch-line hybrid for the 4–7.9 GHz band (65% fractional bandwidth) using microstrip transmission lines. Our simulations indicate that the amplitude imbalance of the designed hybrid is better than 0.3 dB over the most of the 4–7.9 GHz band with a phase imbalance better than ±8.5°. Experimental verification of the hybrid shows excellent agreement with simulations.

Author

Hawal Marouf Rashid

Chalmers, Earth and Space Sciences, Advanced Receiver Development

Parisa Yadranjee Aghdam

Chalmers, Earth and Space Sciences, Advanced Receiver Development

Denis Meledin

Chalmers, Earth and Space Sciences, Advanced Receiver Development

Vincent Desmaris

Chalmers, Earth and Space Sciences, Advanced Receiver Development

Victor Belitsky

Chalmers, Earth and Space Sciences, Advanced Receiver Development

IEEE Microwave and Wireless Components Letters

1531-1309 (ISSN)

Vol. 27 3 230-232 7859487

Roots

Basic sciences

Infrastructure

Onsala Space Observatory

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

Nano Technology

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/LMWC.2017.2665547

More information

Created

10/7/2017