Essays about: "hybrid coupler"

Found 4 essays containing the words hybrid coupler.

  1. 1. Hybrid Coupler for LMBA Input Match Using an Active Inductor

    University essay from Linköpings universitet/Elektroniska Kretsar och System

    Author : Karthik Doddanna; [2021]
    Keywords : LMBA; gyrator-c; active inductor; hybrid coupler; TSMC 0.18um.;

    Abstract : With the increase in demand for compact and high data rate communication systems, there is a need for high efficiency with modulated signals (PAPR 5-10 dB) for base-station power amplifiers. One of the famous architectures used to achieve this is Doherty architecture. READ MORE

  3. 2. Miniaturized quadrature hybrid and rat race coupler utilizing coupled lines for LTE frequency bands

    University essay from Fysik och elektroteknik; Tekniska högskolan

    Author : Masiur Rahman; [2013]
    Keywords : Coupler; quadrature hybrid coupler; rat race coupler; LTE frequecy band; miniaturization; coupled line; microwave communication etc.;

    Abstract : Nowadays, demands for fully integrated and miniaturized RFIC (Radio Frequency Integrated Circuits) have increased in wireless microwave communication system. Passive components such as coupler, divider and filters are always fabricated in outside of ICs due to their bulky sizes, which have been a great barrier to a realization of a fully integrated design. READ MORE

  4. 3. Design of Variable Attenuators Using Different Kinds of PIN-Diodes

    University essay from Fysik och elektroteknik; Tekniska högskolan

    Author : Imran Choudhury; [2013]
    Keywords : PIN diode; attenuator; variable attenuator; Imran choudhury;

    Abstract : Variable attenuators are important circuits that can be employed in many radio frequency (RF) applications, e.g., in automatic gain control (AGC) amplifiers, broadband gain-control blocks at RF frequencies or as broadband vector modulators. For any applications, low insertion phase shift and low power consumption are of interest. READ MORE

  5. 4. Integration of MIMO antenna with a fully 180o differential hybrid coupler

    University essay from Institutionen för teknik och naturvetenskap; Tekniska högskolan

    Author : Raj kumar Kallem; Sampath kumar Veerabomma; [2011]
    Keywords : ;

    Abstract : This thesis work proposes the integration of MIMO antenna (i.e., two bowtie dipole antennas) with a fully differential 180o hybrid coupler in the frequency range of 0.7-3 GHz which falls in the Ultra High Frequency (UHF) band as per the spectrum allocated by International Telecommunication Union (ITU). READ MORE