A 65nm CMOS 2×2 MIMO multi-band LTE RF transceiver for small cell base stations

Lim, Kyoohyun; Lee, Sanghoon; Moon, Byeongmoo; Shin, Hwahyeong; Kang, Kisub; Lee, Yongha; Kim, Seungbeom; Lee, Jinhyeok; Lee, Hyungsuk; Shim, Hyunchul; Sung, Cheolhoon; Park, Geumyoung; Lee, Garam; Kim, Minjung; Park, Seokyoung; Jung, Hyosun; Lee, Jongryul

doi:10.1109/esscirc.2017.8094593

Cited by 10 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resonant can be derived from admittance condition Y IN − UB − odd = 0 or impedance condition Z IN − UB − odd = ∞, 1 or it has a denominator equal with zero.

Z_{5} ((), \frac{Z_{5, e} + Z_{5, o}}{2}) + Z_{6} Z_{4} \cot θ_{4} \tan θ_{5} + Z_{4} ((), \frac{Z_{5, e} + Z_{5, o}}{2}) \cot θ_{4} \tan θ_{4} - {(\frac{Z_{5, e} + Z_{5, o}}{2})}^{2} \tan θ_{5} \tan θ_{6} = 0

…”

Section: Dual‐band Bpf Based On Source‐load Coupling With Stub‐block mentioning

confidence: 99%

“…A highly flexible RF device must be supported by a high‐performance bandpass filter (BPF) that can be controlled. This requirement has motivated many researchers to produce BPFs with controllable performance 1 . Several methods have been proposed to control the frequency passband, such as the stepped impedance ring resonator (SIRR) with shorted stubs, 2 defected and irregular stepped‐impedance resonators (DI‐SIRs), 3 multilayer resonator, 4 loop resonator, 5 cross resonator, 6 substrate‐integrated waveguide (SIW) cavities, 7 and half‐mode substrate integrated waveguide (HMSIW) 8 .…”

Section: Introductionmentioning

confidence: 99%

“…In this Letter, a dual‐band BPF based on a source‐load coupling structure is proposed, as shown in Figure 1A. It is clearly distinct from the microstrip structure used in References 1‐11. The topology of the coupling structure is given in Figure 1B.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A highly independent and controllable dual‐band bandpass filter based on source‐load coupling with stub‐block isolation structure

Denny

2020

Micro & Optical Tech Letters

View full text Add to dashboard Cite

The main problem of dual‐band bandpass filter (BPF) structures is to control each passband performance individually, separately, and independently. This Letter is proposed a dual‐band BPF based on a source‐load coupling structure with stub‐block isolation to overcome the problem. The lower band resonator structure is placed on the top side, while the upper band resonator is placed at the bottom side, with the source‐load (SL) coupling structure in the middle. An additional stub‐block isolation structure is added to the center of the SL coupling structure. As a result, we have successfully designed an independent dual‐band bandpass filter with highly controllable working frequency/frequency center (fc), bandwidth (BW), reflection coefficient (S11), and isolation (ISO) between the passbands. The proposed dual‐band BPF was fabricated on an RT/Duroid 5880 substrate. Furthermore, this dual‐band BPF achieved an insertion loss/fractional bandwidth of 0.48 dB/7.71% and 0.35 dB/12.37% at 1.82 and 2.58 GHz, respectively. The good agreement between the simulated and measured results validates the proposed method.

show abstract

“…The resonant can be derived from admittance condition Y IN − UB − odd = 0 or impedance condition Z IN − UB − odd = ∞, 1 or it has a denominator equal with zero.

Z_{5} ((), \frac{Z_{5, e} + Z_{5, o}}{2}) + Z_{6} Z_{4} \cot θ_{4} \tan θ_{5} + Z_{4} ((), \frac{Z_{5, e} + Z_{5, o}}{2}) \cot θ_{4} \tan θ_{4} - {(\frac{Z_{5, e} + Z_{5, o}}{2})}^{2} \tan θ_{5} \tan θ_{6} = 0

…”

Section: Dual‐band Bpf Based On Source‐load Coupling With Stub‐block mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A highly independent and controllable dual‐band bandpass filter based on source‐load coupling with stub‐block isolation structure

Denny

2020

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…This can be further seen, that there are only a handful of papers (up to the year of 2019) on GaAs/GaN and other III-V semiconductor based transceivers published. Moreover, the articles published under the latter conditions present only an integrated high-end part (mixers, amplifiers and biasing) without any digital capabilities (de Sousa et al, 2004;Villain et al, 2000;Boveda & Ortigoso, 1995;Liberati & Calori, 2008;Lim, Lee et al, 2017;Dyadyuk, Shen & Stokes, 2014). An article (Pettenpaul, 1998) provided a discussion on the application of hetero-devices in GaAs and Si and can be summarized as follows:…”

Section: Fig 12 Modern Transceiver Block Diagrammentioning

confidence: 99%

Mid-band 5G wireless network power amplifier research

Vasjanov¹

2019

View full text Add to dashboard Cite

Vilnius 2019 Disertacija rengta 2015-2019 metais Vilniaus Gedimino technikos universitete. Vadovas doc. dr. Vaidotas BARZDĖNAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001). Vilniaus Gedimino technikos universiteto Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo taryba: Pirmininkas prof. habil. dr. Romualdas NAVICKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001). Nariai: dr. Alvydas LISAUSKAS (Lenkijos mokslų akademijos Aukšto slėgio fizikos institutas, fizika-N 002), doc. dr. Vitalij NOVICKIJ (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001), prof. dr. Šarūnas PAULIKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001), prof. dr. Algimantas VALINEVIČIUS (Kauno technologijos universitetas, elektros ir elektronikos inžinerija-T 001). Disertacija bus ginama viešame Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo tarybos posėdyje 2019 m. birželio 13 d. 10 val. Vilniaus Gedimino technikos universiteto senato posėdžių salėje.

show abstract

“…The RF switches and switchable matching networks may help in achieving a wide frequency tuning range; however, the soaring number of radios and frequency bands will require additional tuning circuitry in a limited volume [17]- [23]. In the context of transmitter, a reconfigurable antenna ideally requires one or more multiband transmitters along with on-chip/off-chip tuning networks and RF switches [24]. Some transmitters have been proposed [25]- [27], yet the die area and the bulky off-chip tuning networks are major issues.…”

Section: Introductionmentioning

confidence: 99%

A 1.5–5-GHz Integrated RF Transmitter Front End for Active Matching of an Antenna Cluster

Saleem

Stadius

Hannula

et al. 2020

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

A recently proposed method for realizing frequencyreconfigurable antennas across a wideband is based on adjusting the feed amplitudes and phases of a multiport antenna. In this article, we demonstrate the feasibility of the method, for the first time, with a conjunction of an integrated RF transmitter and a four-element antenna cluster. The implementation performs on-chip amplitude and phase tuning with supply scaling and delay tuning circuits to tune the antenna cluster without requirement of matching network. The antenna cluster is built with four closely spaced antenna elements implemented on a printed circuit board. The transmitter integrated circuit (IC) is implemented in a 28-nm CMOS process with the chip size of 0.85 mm × 0.95 mm, including pads. The proof-of-concept implementation demonstrates tunability across a wideband from 1.5 to 5 GHz.

show abstract

A 65nm CMOS 2×2 MIMO multi-band LTE RF transceiver for small cell base stations

Cited by 10 publications

References 4 publications

A highly independent and controllable dual‐band bandpass filter based on source‐load coupling with stub‐block isolation structure

A highly independent and controllable dual‐band bandpass filter based on source‐load coupling with stub‐block isolation structure

Mid-band 5G wireless network power amplifier research

A 1.5–5-GHz Integrated RF Transmitter Front End for Active Matching of an Antenna Cluster

Contact Info

Product

Resources

About