A Tail-Injected Divide-by-4 SiGe HBT Injection Locked Frequency Divider

A novel wide locking range divide-by-4 injection-locked frequency divider (ILFD) is proposed in the paper and was implemented in the TSMC 0.18 μm 1P6M CMOS process. The divide-by-4 ILFD uses two injection transistors in series and DC-biased above threshold voltage and a frequency doubler to enhance the function of linear mixers. At the drain-source bias of 0.9 V and at the incident power of 0 dBm, the locking range of the divide-by-4 is 2.6 GHz; from the incident frequency 12.2 to 14.8 GHz, the percentage is 19.26%. The core power consumption is 10.35 mW. The die area of ILFD is 1.026 × 0.943 mm 2 . Copyright Figure 4. Simulated locking range versus input power with the parameter C1. VDD = 0.9 V, Vb = 0.8 V, and Vinj = 1.7 V. INJECTION-LOCKED FREQUENCY DIVIDER USING ABOVE THRESHOLD MIXER

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Wide‐locking range divide‐by‐4 injection‐locked frequency divider using injection MOSFET DC‐biased above threshold region

Jang

Chang

Hsue

et al. 2015

Circuit Theory & Apps

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Wide-locking range LC-tank divide-by-4 injection-locked frequency divider using transformer feedback

Jang

Huang

Lin

2015

Int J RF and Microwave Comp Aid Eng

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A wide locking range, injection locked frequency divider (ILFD) circuit topology is explored. The modulus‐four ILFD utilizes a cross‐coupled voltage‐controlled oscillator in conjunction with transformer feedback, parallel‐tuned resonator, and two‐segment, series mixers at the injection point. The transformer feedback and two‐segment mixing circuit topology achieves a locking range of 2.7 GHz (14.1 to 16.8 GHz) at an injection point bias of 0.9 Vdc and 0 dBm injection power. Spectral measurements at the ILFD output demonstrate proper phase‐lock operation and expected phase noise reduction using a high quality signal source at the ILFD input. The ILFD is implemented in the TSMC 0.18 μm 1P6M CMOS process, utilizes a die area of 0.839 × 0.566 mm2 and consumes 16.56 mW. © 2015 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:557–562, 2015.

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An eight‐phase divide‐by‐4 SiGe HBT ring‐oscillator‐based injection‐locked frequency divider

Huang

Chang

et al. 2009

Micro & Optical Tech Letters

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band merged into one, and the impedance bandwidth increased. The existence of the shortest arm of a C-shaped stub-1 (L st2 ) and a stub-2 (L st3 ) caused the highest resonant frequency to decrease and the impedance bandwidth to increase, as shown in Figure 2(c). Therefore, the impedance matching of the proposed antenna can be independently controlled for each frequency band. The antenna was designed and analyzed using the Ansoft High-Frequency Structure Simulator (HFSS V11) [8] and the optimal design parameters discovered were L ¼ L st1 ¼ 16 mm, L st2 ¼ 7 mm, and L st3 ¼ 6 mm. RESULTSABSTRACT: This article presents an eight-phase divide-by-4 silicon-germanium (SiGe) heterojunction bipolar transistor (HBT) injection-locked frequency divider (ILFD). The ILFD is based on a four-stage ring oscillator and was fabricated in the 0.35 lm SiGe 3P3M BiCMOS technology. The divide-by-4 function is performed by injecting a signal to the base of the tail HBT. At the supply voltage V dd of 1.3 V and at the incident power of 0 dBm, the locking range is about 2.55 GHz from the incident frequency 12.7 to 15.25 GHz. The die area is 0.54 Â 0.54 mm 2 .ABSTRACT: Dual-wavelength clock recovery (CR) based on Stimulated Brillouin Scattering is realized. The maximum frequency spacing of two channels is theoretically analyzed and experimentally demonstrated. The total wavelength span of the CR scheme is investigated to be about 3.37 nm in experiment. Multiwavelength CR can be implemented within the span.

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A Tail-Injected Divide-by-4 SiGe HBT Injection Locked Frequency Divider

Cited by 28 publications

References 11 publications

Wide‐locking range divide‐by‐4 injection‐locked frequency divider using injection MOSFET DC‐biased above threshold region

Wide‐locking range divide‐by‐4 injection‐locked frequency divider using injection MOSFET DC‐biased above threshold region

Wide-locking range LC-tank divide-by-4 injection-locked frequency divider using transformer feedback

An eight‐phase divide‐by‐4 SiGe HBT ring‐oscillator‐based injection‐locked frequency divider

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