Radio frequency (rf) power limiter and associated methods
AssigneeHarris Corporation, Corporation of the State of Delaware
InventorAlan William MAST
Life of this patent
Estimating the term…
Abstract
A resistive radio frequency (RF) signal power limiter is for connection between an antenna and a receiver circuit in an RF receiver system. The receiver circuit may include a low noise amplifier (LNA). The resistive RF signal power limiter may include at least one positive temperature coefficient (PTC) thermistor connected in series, and at least one negative temperature coefficient (NTC) thermistor connected in shunt between the at least one PTC thermistor and a reference voltage.
Claims24
A radio frequency (RF) receiver system comprising:
- an antenna;
- a receiver circuit;
- and
- a resistive RF signal power limiter connected between said antenna and said receiver circuit, and comprising
- at least one positive temperature coefficient thermistor connected in series between said antenna and said receiver circuit, and
- at least one negative temperature coefficient thermistor connected in shunt between the at least one positive temperature coefficient thermistor and a reference voltage.
A resistive RF signal power limiter for connection between an antenna and a receiver circuit of a radio frequency (RF receiver system, the resistive RF signal power limiter comprising:
- at least one positive temperature coefficient thermistor to be connected in series between said antenna and said receiver circuit;
- and
- at least one negative temperature coefficient thermistor to be connected in shunt between the at least one positive temperature coefficient thermistor and a reference voltage.
The resistive RF signal power limiter according to claim 18, further comprising a resistive device connected in parallel with the at least one negative temperature coefficient thermistor and thermally coupled thereto.
A method of using a resistive RF signal power limiter for connection between an antenna and a receiver circuit of a radio frequency (RF) receiver system, the method comprising:
- providing at least one positive temperature coefficient thermistor for connection in series between the antenna and the receiver circuit;
- and
- connecting at least one negative temperature coefficient thermistor in shunt between the at least one positive temperature coefficient thermistor and a reference voltage.
Dependencies are inferred from the claim text.