Impedance matching network
AssigneeEM Microelectronic-Marin SA
InventorsCao-Thong Tu, Kevin Scott Buescher
Life of this patent
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Abstract
An impedance matching network (10) for an active RFID transceiver (1), the impedance matching network (10) including: an impedance transformer (14) including a transformer input (13) and a transformer output (15), wherein the transformer input (13) is connectable to an antenna (12), an RF modulator (16) connectable to the transformer output (15), and an RF demodulator (20) capacitively coupled to the transformer output (15) via a capacitor (18).
Claims13
An impedance matching network (10) for an active RFID transceiver (1), the impedance matching network (10) comprising:
- an impedance transformer (14) comprising a transformer input (13) and a transformer output (15), wherein the transformer input (13) is connectable to an antenna (12),
- an RF modulator (16) connectable to the transformer output (15), and
- an RF demodulator (20) capacitively coupled to each of the transformer output (15) and the RF modulator (16) via a capacitor (18).
An impedance matching network (10) for an active RFID transceiver (1), the impedance matching network (10) comprising:
- an impedance transformer (14) comprising a transformer input (13) and a transformer output (15), wherein the transformer input (13) is connectable to an antenna (12),
- an RF modulator (16) connectable to the transformer output (15), and
- an RF demodulator (20) capacitively coupled to the transformer output (15) via a capacitor (18), wherein the RF demodulator (20) comprises a push pull amplifier (50) comprising a first and a second PMOS transistor (Pla, P1b) and a first and a second NMOS transistor (N1a, N1b) and wherein the gates of the first and second NMOS transistor are connected to the transformer output (15) via the capacitor (18).
Dependencies are inferred from the claim text.