Power efficient PIN attenuator drive circuit

Details Power efficient PIN attenuator drive circuit Power efficient PIN attenuator drive circuit

2007-03-15

2008-11-11

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Attenuators

C327S308000

Reexamination Certificate

active

07449976

ABSTRACT:
An attenuator circuit (10) having two or more branch circuits (12ato12e) has inputs (14ato14e) for the branch circuits (12ato12e) being connected essentially in parallel arrangement to an input port (20) for the attenuator circuit (10). Each branch circuit (12ato12e) includes one or more bipolar transistors (32ato32e) having a collector element receiving a signal from a power supply (24) through at least one RF positive-intrinsic-negative (PIN) diode (50a-50d) that a control circuit (24) is controlling. At least one resistive element (16a) couples an input (14b) of a second (12b) of the plurality of branch circuits (12ato12e) from the input port (20) to the branch circuits (12ato12e). Thus, each branch (12ato12e) of the attenuator circuit (10) draws current from a low voltage power supply (24) while still providing for sequential biasing of successive branches and linearization of overall control characteristics.

REFERENCES:
patent: 4236126 (1980-11-01), Weller et al.
patent: 4494084 (1985-01-01), Hughes
patent: 4912394 (1990-03-01), Sugimoto et al.
patent: 5847624 (1998-12-01), Pritchett
patent: 6011513 (2000-01-01), Wilson et al.
patent: 6147568 (2000-11-01), Souetinov
patent: 6472948 (2002-10-01), Kyriakos et al.
patent: 6667669 (2003-12-01), Goyette et al.
patent: 6683511 (2004-01-01), Souetinov et al.
patent: 6919774 (2005-07-01), Ritchey et al.
patent: 7002391 (2006-02-01), Madsen
patent: 7023294 (2006-04-01), Hauger et al.
patent: 2005/0093606 (2005-05-01), Kaiser, Jr.
patent: 2005/0156685 (2005-07-01), Hauger et al.
patent: 2005/0174157 (2005-08-01), Calo' et al.
patent: 2006/0028291 (2006-02-01), Endo et al.
patent: 2006/0044040 (2006-03-01), Kawai
patent: 2006/0097821 (2006-05-01), Ju et al.

Affiliated with

Also associated with

Rating

Power efficient PIN attenuator drive circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power efficient PIN attenuator drive circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power efficient PIN attenuator drive circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4022479