Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Hussam AlShammary"'
Publikováno v:
IEEE Journal of Solid-State Circuits. 56:3094-3108
This article presents a full-duplex (FD) rake receiver (RX) that uses the orthogonality properties of pseudo-noise (PN) codes to reject transmitter (TX) self-interference (SI) in the RF domain, allowing simultaneous transmit and receive (STAR) operat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::434656b229c2477afda4576d8011006f
https://doi.org/10.1109/jssc.2021.3079138
https://doi.org/10.1109/jssc.2021.3079138
Autor:
Hussam AlShammary, Alfred Festus Davidson, Aravind Nagulu, Ahmed Hamza, Cameron Hill, James F. Buckwalter, Jonathan Tao, Harish Krishnaswamy
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 69:955-968
This article presents a CMOS-based, code-domain (CD), full-duplex (FD) transceiver operating in a link at 1 GHz. The CD FD link rejects in-band transmitter self-interference (TX SI) by more than 100 dB through a combination of pseudo-noise (PN) code
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b507f5cb0e51303fe44f6943be04245d
https://doi.org/10.1109/tmtt.2020.3035354
https://doi.org/10.1109/tmtt.2020.3035354
Publikováno v:
IEEE Journal of Solid-State Circuits. 55:1909-1921
Code-domain signal processing techniques implemented at radio frequencies (RFs) enable simultaneous transmit and receive (STAR) applications. With direct sequence spread spectrum (DSSS) techniques and RF correlators, transmit (TX) self-interference (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb626c76d905e4300958c33f6a3dd192
https://doi.org/10.1109/jssc.2020.2970718
https://doi.org/10.1109/jssc.2020.2970718
Publikováno v:
IEEE Journal of Solid-State Circuits. 55:1199-1211
A code-domain transceiver front end that incorporates a transmit modulator and a receive (RX) RF signal correlator is presented. An integrate-and-dump $N$ -path filter improves rejection by 8 dB. We propose an RF chopper switch with 12.1-/23.1-dBm P1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ad555e2b8ee6cc13f890c8919702979
https://doi.org/10.1109/jssc.2019.2960486
https://doi.org/10.1109/jssc.2019.2960486
Publikováno v:
IEEE Journal of Solid-State Circuits. 55:261-271
This article demonstrates a signal processing technique for receiving non-contiguous RF channels by concurrently mixing several RF bands to adjacent IF channels. Consequently, channel selection does not require local oscillator tuning and the propose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54aae3bef37d99bb607c41397c780817
https://doi.org/10.1109/jssc.2019.2960201
https://doi.org/10.1109/jssc.2019.2960201
Publikováno v:
IEEE Solid-State Circuits Letters. 3:490-493
This letter presents a tunable notch filter that can be reconfigured to improve rejection while offering high power handling. The notch filter uses a series $N$ -path filter in conjunction with an impedance-transformed shunt $N$ -path filter to impro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2866839241c8b15b8ce3b529e478c7c
https://doi.org/10.1109/lssc.2020.3033183
https://doi.org/10.1109/lssc.2020.3033183
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:5315-5328
This article reports signal processing and circuit techniques for direct RF signal modulation. A pulse-encoded transition (PET) technique is introduced to reduce undesired harmonic distortion (HD) and adjacent channel leakage ratio (ACLR) generated b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c0642c4aa0cb39ab07a239990f35847
https://doi.org/10.1109/tmtt.2019.2951565
https://doi.org/10.1109/tmtt.2019.2951565
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:2730-2740
This paper demonstrates generalized code-selective filters for code-pass and code-reject signal processing at RF. A code-reject scheme using a quarter-wave ( $\lambda /4$ ) impedance transformation is also demonstrated to overcome tradeoffs of insert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2eaf434e90918bbf2f085fefc063fd59
https://doi.org/10.1109/tmtt.2019.2916306
https://doi.org/10.1109/tmtt.2019.2916306
Publikováno v:
2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
This paper presents a 3-finger rake receiver (RX) that exploits multipath characteristics in PN-modulated received signals to improve the signal-to-noise ratio (SNR) in full-duplex (FD) links. Orthogonality between PN codes allows up to 41.2 dB of TX
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cf80ac519989ceeace748719ac8de85
https://doi.org/10.1109/rfic49505.2020.9218443
https://doi.org/10.1109/rfic49505.2020.9218443
Autor:
James F. Buckwalter, Harish Krishnaswamy, Hussam AlShammary, Eythan Lam, Ahmed Hamza, Aravind Nagulu, Cameron Hill
Publikováno v:
2020 IEEE/MTT-S International Microwave Symposium (IMS).
This paper describes a full-duplex (FD) radio transceiver that uses CMOS RFICs to realize high power handling and linearity. A high-rejection, magnetic-less CMOS circulator at the antenna along with high-rejection, blocker-tolerant RF code-domain cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c24eaea0431f441b1a257dcea78ae28e
https://doi.org/10.1109/ims30576.2020.9224077
https://doi.org/10.1109/ims30576.2020.9224077