Wideband passive circuits for sideband separating receivers
Paper in proceeding, 2018
In this work, we present the design and characterization a new generation of compact wideband quadrature hybrids operating both at room and cryogenic temperatures for prospective use in the IF chain of 2SB THz receivers. The compact wideband design employs a multi-section topology (coupled line coupler - Lange coupler- coupled line coupler) and thin-film technology with gold plated transmission lines and air bridges to connect the fingers of the Lange coupler (middle section). The hybrids were designed to have the amplitude and phase imbalance better than 0.6 dB and ±3° respectively over a 3.5-12.5 GHz and 4-16 GHz frequency bands. The experimental verification of the assembly at 293 K and 4 K shows very good agreement between the measurements and simulations with amplitude imbalance better 0.5 dB and maximum phase imbalance of ±1.5°.
Author
Hawal Marouf Rashid
Chalmers, Space, Earth and Environment, Advanced Receiver Development
Denis Meledin
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Vincent Desmaris
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Victor Belitsky
Chalmers, Space, Earth and Environment, Onsala Space Observatory
2018 29th IEEE International Symposium on Space Terahertz Technology, ISSTT 2018
195-200
29th IEEE International Symposium on Space Terahertz Technology, ISSTT 2018
Pasadena, USA,
Pasadena, USA,
Subject Categories
Aerospace Engineering
Other Physics Topics
Other Electrical Engineering, Electronic Engineering, Information Engineering