Can a conventional inductor be used to match Teng capacitance?

As the inherent capacitance of TENGs inversely affects their generated power , , the produced power can be improved by reducing the overall reactance of the circuit. This can be achieved by using a conventional inductor, but it is not appropriate for matching TENGs capacitances on the order of 10 −15 F.

Are off-chip bulky inductors suitable for RF energy harvesting systems?

In RF energy harvesting systems, the use of off-chip bulky inductors adds significant area overhead and additional parasitics associated with off-chip components. This paper proposes a fully on-chip tunable impedance matching strategy for such systems.

Can a matching circuit increase the output power of a Teng?

This paper presents a solution to enhancing the output power of a TENG by devising an active on chip (IC) matching circuit. The matching circuit generates a negative capacitance to counter the effect of TENG’s internal capacitance and boosts the produced current.

Can a fully on-chip tunable impedance matching scheme reduce power transfer losses?

This paper proposes a fully on-chip tunable impedance matching scheme to minimize power transfer losses across the antenna rectifier interface in an RF energy harvesting system. The proposed matching scheme eliminates the need for bulky off-chip inductors and uses on-chip varactor-based inductors for low form-factor applications.

How to design a matching circuit using an inductor?

From the last equation, it can be observed that to design a matching circuit using an inductor, its inductance value should be L = 1 ∕ 2 ω 2 C TENG. In other words, the inductor should have a time-varying inductance, a non-trivial task.

Why does a matching network need a fixed inductor?

In a matching network, the inductor is kept fixed, which results in a sub-optimal matching solution. The continuous tracking of impedance variations requires complex control circuitry, adding additional area and power overhead.