By Zhicheng Lin, Pui-In Mak Elvis, Rui Paulo Martins
This publication offers readers with a cutting-edge description of suggestions for use for ultra-low-power (ULP) and ultra-low-cost (ULC), short-range instant receivers. Readers will study what's required to installation those receivers in short-range instant sensor networks, that are proliferating commonly to serve the web of items (IoT) for “smart cities.” The authors handle key demanding situations concerned with the know-how and the common tradeoffs among ULP and ULC. 3 layout examples with complex circuit strategies are defined as a way to handle those trade-offs, which specific specialize in rate minimization. those 3 recommendations allow respectively, cascading of radio frequency (RF) and baseband (BB) circuits below an ultra-low-voltage (ULV) offer, cascading of RF and BB circuits in present area for present reuse and a singular function-reuse receiver structure, compatible for ULV and multi-band ULP purposes corresponding to the sub-GHz ZigBee.
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Extra resources for Ultra-Low-Power and Ultra-Low-Cost Short-Range Wireless Receivers in Nanoscale CMOS
Only RL). 2-V supply (VDD12) still adequate for the Blixer and hybrid ﬁlter, while relaxing the required LO swing (LOIP and LOIn). C1-3 for biasing are typical metal-oxide-metal (MoM) capacitors to minimize the parasitics. The balun-LNA features partial-noise canceling. To simplify the study, we ignore the noise induced by DBM (M5–M8) and the effect of channel-length modulation. 3 Circuit Implementation 39 TFIn;CG ¼ À Á 1À RL À Rin Gm;CS RL 2 ð3:1Þ where Gm,CS = gm,CS + gm,AGB. The noise of M1 can be fully canceled if RinGm, CS = 1 is satisﬁed.
7a) with amplitude of 2iRF/π at BB, and into the common mode (Fig. 7b) with amplitude of 0:5iRF at RF. To suppress the latter, CM was added to create a lowpass pole (CM//RTIA). For the differential IF signal, the pole is located at (CM + 2C1)//RTIA, which suppresses the out-of-channel interferers before they enter the TIA. As such, the TIA can be biased under a very small bias current. 5i RF RTIA CM 2C1 M5 M6 M5 LOIn M6 LOIn Fig. 7 Equivalent circuits of the mixer-TIA interface for a the differential low-IF signal and b the common-mode RF feed through ﬁltering because of the bidirectional impedance-translation property of the passive mixers [7, 8].
Krizhanovskii, J. 18 μm CMOS technology. IEEE Trans. Microw. Theory Tech. 54, 4062–4071 (2006) 28. Z. -I. P. 4-GHz ZigBee/WPAN receiver exploiting a “Split-LNTA + 50 % LO” topology in 65-nm CMOS. IEEE Trans. Microw. Theory Tech. 1 Introduction Ultra-low-power (ULP) radios have essentially underpinned the development of short-range wireless technologies  such as personal/body-area networks and Internet of Things. The main challenges faced by those ULP radios are the stringent power and area budgets, and the pressure of minimum external components to save cost and system volume.