1
David Weber, Manolis Terrovitis, David Su: Method and apparatus for signal power loss reduction in RF communication systems. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, May 1, 2007: US07212788 (77 worldwide citation)

Multiple power amplifiers in an RF front end are coupled to multiple antennas without diversity switching between the PAs and antennas. Diversity switches direct signals to broadcast by a selected antenna to a PA coupled to the selected antenna. Multiple LNAs are similarly coupled to the diverse ant ...


2
William J McFarland, Keith Onedera, Arie Shor, David Su, Manolis Terrovitis, John Thomson, Masoud Zaragari: Dual frequency band wireless LAN. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, July 31, 2007: US07251459 (28 worldwide citation)

A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components such as fine gain control and fine fr ...


3
Manolis Terrovitis: Transformer implementation using bonding wires. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, August 15, 2006: US07091791 (21 worldwide citation)

The use of the magnetic coupling between bonding wires can be advantageously used to transform a differential signal to a single-ended signal. Because bonding wires are very good conductors, this differential to single-ended signal transformation can be performed with minimal signal loss. Moreover, ...


4
William J McFarland, Keith K Onodera, Arie Shor, David K Su, Manolis Terrovitis, John S Thomson, Masoud Zaragari: Dual frequency band wireless LAN. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, January 4, 2011: US07865150 (8 worldwide citation)

A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components such as fine gain control and fine fr ...


5
Manolis Terrovitis: DC-couples RF multi-stage amplifier. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, March 24, 2009: US07508264 (8 worldwide citation)

An RF amplifier can include multiple gain stages, wherein each gain stage can be DC coupled to an adjacent gain stage. Each input gain stage can include either n-type gain transistors or p-type gain transistors. Multiple input gain stages can be designed/built by interleaving input gain stages of di ...


6
Manolis Terrovitis: CMOS transceiver analog front end having a combined power amplifier and low noise amplifier. Qualcomm Atheros, Bever Hoffman & Harms, January 17, 2012: US08099062 (7 worldwide citation)

A complementary metal oxide semiconductor transceiver analog front end circuit includes a combined transmit and receive amplifier block that produces an amplified transmit differential signal and receives a receive differential signal through the same pair of input/output nodes coupled to an externa ...


7
Manolis Terrovitis, Srenik Mehta: Mitigating parasitic current that leaks to the control voltage node of a phase-locked loop. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, November 7, 2006: US07132865 (7 worldwide citation)

Parasitic current at the control voltage node of a phase-locked loop (PLL) can significantly reduce performance of the PLL. Off-state transistors in either the charge pump or the filter can cause this parasitic current. A method of canceling a parasitic current generated by the charge pump in the PL ...


8
Manolis Terrovitis: Tunable circuit including a switchable inductor. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, August 15, 2006: US07091784 (7 worldwide citation)

The frequency of a differential circuit can be advantageously adjusted using a switchable inductor. Specifically, the switchable inductor allows a base inductance to be increased by activating one of a plurality of inductor stages. A switch in an inductor stage can be opened to activate that inducto ...


9
David J Weber, Manolis Terrovitis, David K Su: Method and apparatus for signal power loss reduction in RF communication systems. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, September 15, 2009: US07590390 (6 worldwide citation)

Multiple power amplifiers in an RF front end are coupled to multiple antennas without diversity switching between the PAs and antennas. Diversity switches direct signals to broadcast by a selected antenna to a PA coupled to the selected antenna. Multiple LNAs are similarly coupled to the diverse ant ...


10
Manolis Terrovitis: Charge pump with large bypass capacitors. Atheros Communications, Bever Hoffman & Harms, Jeanette S Harms, October 31, 2006: US07130225 (6 worldwide citation)

A charge pump can advantageously include a PMOS transistor that functions as a first current source and an NMOS transistor that functions as a second current source. The transistors can be appropriately sized to provide low parasitic charge injection. Capacitors can function as low impedance voltage ...