Patent
Receiving circuit including balun circuit and notch filter and operating method thereof
TLDR
In this article, a transformer converts a single input signal to a differential input signal using a first tap, and a notch filter blocks a specific frequency band by connecting a second tap with the first tap using a condenser.Abstract:
Provided are a receiving circuit including a balun circuit and a notch filter, and an operating method thereof. The receiving circuit includes a transformer, a notch filter, and a mixer. The transformer converts a single input signal to a differential input signal using a first tap. The notch filter blocks a specific frequency band of the single input signal by connecting a second tap with the first tap of the transformer using a condenser.read more
Citations
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Patent
Multiple-input and multiple-output carrier aggregation receiver reuse architecture
TL;DR: In this article, a wireless communication device configured for receiving a wireless multiple-input and multiple-output signal is presented, which includes a first MIMO carrier aggregation receiver reuse architecture.
Patent
Low noise amplifiers for carrier aggregation
TL;DR: In this article, the first and second amplifiers of a carrier aggregation LNAs are described. But the first amplifier stage receives and amplifies an input radio frequency (RF) signal and provides a first output RF signal to a first load circuit when the first stage is enabled.
Patent
Signal splitting carrier aggregation receiver architecture
TL;DR: In this article, a wireless communication device configured for receiving a multiple carrier signal is described, which includes a primary signal splitting carrier aggregation (PSBA) architecture and a transceiver chip.
Patent
Carrier aggregation receiver architecture
TL;DR: In this paper, a receiver architecture for carrier aggregation is described, which includes a plurality of low-noise amplifiers (LNAs), switches, and at least one downconverter.
Patent
Single-chip signal splitting carrier aggregation receiver architecture
TL;DR: In this article, a single-chip signal splitting carrier aggregation (SSECA) receiver architecture was proposed for multiple-carrier wireless communication, which includes a primary antenna, a secondary antenna, and a transceiver chip.
References
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Patent
Frequency and q-factor tunable filters using frequency translatable impedance structures
TL;DR: In this paper, a system consisting of an input node, a frequency translatable impedance (FTI) filter, and a radio frequency (RF) downconverter module is described.
Patent
Transformer-based multi-band RF front-end architecture
TL;DR: In this paper, an apparatus and method for allowing two different signal paths to be coupled to a multi-tap transformer balun is presented. Butts et al. proposed a method to reduce the number of external components and integrated circuit package pins, and reduce the area required for each signal path on an integrated circuit die, a printed circuit board, or the like.
Patent
Mixer circuit with on-chip transformer
TL;DR: In this paper, an apparatus for modifying a radio frequency signal includes a mixer core, an input circuit and an interface circuit, which is interposed between the mixer core and the input circuit.
Patent
Integrated balanced-filters
Lap K. Yeung,Ke-Li Wu +1 more
TL;DR: In this article, an integrated balanced-filter which acts as a matching network, a balun and an extracted-pole bandpass filter is disclosed, which can be implemented in a multi-layered substrate, thereby reducing the size of the balanced filter.
Patent
Compensation scheme for reducing effective transformer leakage inductance
TL;DR: In this paper, a transformer having a core of soft magnetic material around which a first winding and a second winding are wound and a leakage inductance based on the magnetic coupling between these windings is minimized by adding a third transformer winding serially connected to a capacitor, the latter being varied to reduce the leakage reactance over a broad frequency range.