Transceiver front-end

• US 20060183434A1
• Filed: 04/10/2006
• Published: 08/17/2006
• Est. Priority Date: 08/10/2001
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Lin, Chi-Hung, Westra, Jan Roelof, van de Plassche, Rudy J.
• Granted Patent: US 8,081,932 B2
• Time in Patent Office: Days
• US Class Current: 455/78
• CPC Class Codes: H04B 1/583 using a bridge network

Abstract

A transceiver front-end provides an interface between a transmission medium and transmitter, and between a transmission medium and receiver. The transceiver front-end includes a hybrid circuit, a high-pass filter, and a gain stage, that permits the reduction or the complete elimination of buffer amplifiers. Buffer amplifiers can be eliminated because the hybrid circuit and/or the high-pass filter are adapted so that they can be directly connected to each other, without a loss in circuit performance. Furthermore, the high-pass filter and/or the gain stage are also adapted so they can be directly connected. As such, the transceiver front-end can be constructed using all passive components, reducing or eliminating excess heat generation.

Claims

1. A transceiver front-end, comprising:

a hybrid circuit having a first port that is connectable to a transmission medium, a second port that is connectable to a transmit source, and a third port;

a high-pass filter, having an input that is directly connected to said third port of said hybrid circuit; and

a gain stage, having an input that is connected to an output of said high-pass filter.

2-30. -30. (canceled)