A novel dual-core dual-mode class-F voltage-controlled oscillator (VCO) with wide frequency tuning range (TR) is proposed in this letter. It consists of two coupled parallel “8”-shaped inductor and two crossed-coupled VCO cores.

2025年1月2日 · To address the great labour challenge arising from sizing a wide tuning range (TR) multi-mode voltage-controlled oscillator (VCO) manually, an electronic design automation methodology is proposed in this paper, which can optimize multiple circuit dimensions and design objectives of the wide TR multi-mode VCO simultaneously, achieving ...

In order to lower the phase noise (PN), transformer-based, trifilar-coil, and multi-core VCO topologies have emerged in recent years [1–4]. However, at millimeter-wave (mm-Wave) bands, TR becomes narrow and the Q-factor of resonance tank becomes low as the parasitic effect increases, especially for complicated trifilar-coil tank.

2023年8月4日 · This paper presents a design methodology of an extended wide TR LC-VCO utilizing a folded feedline layout-based parasitic reduction technique. Furthermore, the technique being proposed relaxes the required \ ( {g}_ {m}\) for the oscillation startup condition, thereby diminishing power consumption and phase noise.

2016年9月1日 · Focusing on the VCO's tuning range (TR), it is important to notice that a linear VCO gain (KVCO) is critical for Phase Locked Loop systems as it determines the dynamic characteristics such as bandwidth and phase noise for the synthesized signal [1].

Such limitations are particularly pertinent to tunable circuits such as passive phase shifters [1] and Voltage-Controlled Oscillators (VCOs), where tunable elements, such as varactors and switches, are employed.

This paper presents a design method-ology of an extended wide TR LC-VCO utilizing a folded feedline layout-based parasitic reduction technique. Furthermore, the technique being proposed relaxes the required gm for the oscillation startup condition, thereby diminishing power consumption and phase noise.

A voltage-controlled oscillator (VCO) with a high oscillation frequency (fosc) and a wide tuning range (TR) is an essential component of a high speed communication system [1]. However, there are major limit-ations associated with the fosc and the TR of a VCO from the parasitic capacitance (Cp) of the transistors.

2021年2月20日 · 在 VCO 处于控制环路中的应用中，如 PLL，调谐灵敏度是 VCO 元件的增益，可能会影响控制环路的动态性能和稳定性。 VCO 的输出功率规定了向指定阻抗负载输送的功率，对于 RF VCO 来说通常是 50 欧姆 (Ω)。

2019年12月24日 · A switched coupled transmission line (SCTL) method with high Q and flexible structure is proposed for mm-wave VCO to improve tuning range (TR), meanwhile maintaining low phase noise, low power dissipation and zero additional area. This TR extension method is also proved effective in a switched coupled coplanar waveguide (SCCPW) VCO.