Prior art

Based on the patent documentation and the list of cited prior art for US patent 8,593,358, here is an analysis of the most relevant references and their potential impact on the patent's claims under 35 U.S.C. § 102.

The core inventive concept of US patent 8,593,358 is the use of a single, tunable antenna structure within an antenna array for simultaneous operation by a plurality of transceivers in different frequency bands. An analysis for anticipation requires finding a single prior art reference that discloses all elements of a claim.

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Analysis of Cited Prior Art

The following analysis examines the patent citations listed in US patent 8,593,358.

1. US Patent 7,132,989 B1 (Kyocera Wireless Corp.)

• Full Citation: US Patent 7,132,989 B1, "Apparatus, system, and method for adjusting antenna characteristics using tunable parasitic elements."
• Publication/Priority Dates: Publication Date: Nov 7, 2006; Filing Date: May 4, 2005.
• Brief Description: This patent describes an antenna with tunable parasitic elements. The tuning is achieved by adjusting variable reactive components (like varactor diodes) to change the resonant frequency of the parasitic elements. The primary purpose is to compensate for antenna de-tuning caused by environmental factors, such as the proximity of a user's hand or head, thereby improving performance within a specific operating band.
• Anticipation Analysis (35 U.S.C. § 102):
  • This reference teaches an actively tuned antenna using electronic control, which is an element in claims 1 and 8 of '358.
  • However, the focus of '989 is on optimizing performance for a single band at a time to counteract environmental effects. It does not appear to disclose or suggest using the tuning mechanism to allow a plurality of different transceivers (e.g., cellular, Wi-Fi, Bluetooth) to use the antenna simultaneously in different frequency bands. Therefore, it likely does not anticipate the core combination of elements in claims 1, 8, 14, or 19.

2. US Patent Application Publication 2008/0158081 A1 (Broadcom Corporation)

• Full Citation: US 2008/0158081 A1, "Adjustable integrated circuit antenna structure."
• Publication/Priority Dates: Publication Date: Jul 3, 2008; Filing Date: Dec 29, 2006.
• Brief Description: This publication discloses an antenna structure integrated into a circuit, where the antenna's electrical properties can be adjusted. It uses switches to change the antenna's effective electrical length, allowing it to be tuned to operate efficiently in different frequency bands. The system is described with a transceiver coupled to this adjustable antenna.
• Anticipation Analysis (35 U.S.C. § 102):
  • This reference teaches an antenna that is tunable for multiple frequency bands using electronic control (switches), which is an element of claims 1 and 8 of '358.
  • The disclosure appears to focus on a single transceiver that can operate in different bands by re-tuning the antenna for each band sequentially. It does not explicitly teach a system where a plurality of distinct transceivers are coupled to the single antenna for simultaneous multi-band operation. The absence of this "simultaneous use by multiple transceivers" element means it likely does not anticipate the independent claims of '358.

3. US Patent 6,762,723 B2 (Motorola, Inc.)

• Full Citation: US Patent 6,762,723 B2, "Wireless communication device having multiband antenna."
• Publication/Priority Dates: Publication Date: Jul 13, 2004; Filing Date: Nov 8, 2002.
• Brief Description: This patent describes a multi-band antenna arrangement for a wireless device. It consists of multiple radiating elements, each designed for a different frequency band (e.g., GPS and Bluetooth), which may be located on a common substrate and share a ground plane. Each radiating element is coupled to its respective transceiver.
• Anticipation Analysis (35 U.S.C. § 102):
  • This reference describes a device with multiple transceivers for different bands.
  • However, it teaches the use of separate radiating elements for each band, even if they are on a common substrate. This is different from the core concept of '358, where a single antenna structure is shared and tuned. The structure in '723 is more akin to multiple co-located antennas, as depicted in FIG. 1 of the '358 patent, which is described as the state of the art the invention seeks to improve upon. Therefore, it does not anticipate the claims.

4. US Patent 8,421,695 B2 (Ethertronics, Inc.)

• Full Citation: US Patent 8,421,695 B2, "Multi-frequency, noise optimized active antenna."
• Publication/Priority Dates: Publication Date: Apr 16, 2013; Priority Date: Apr 11, 2008. The priority date is prior to the August 14, 2008 priority date of '358.
• Brief Description: This patent describes an active antenna system capable of operating at multiple frequencies. It includes an active circuit for impedance matching and can be controlled to tune the antenna's response. The system is designed to improve performance and efficiency for a transceiver.
• Anticipation Analysis (35 U.S.C. § 102):
  • This is a strong reference as it teaches an "active antenna" for "multi-frequency" use, aligning with elements of the '358 claims.
  • However, similar to the Broadcom reference ('081), the teachings in '695 appear focused on a single feed from a single (potentially multi-band) transceiver. There is no clear disclosure of connecting a plurality of separate transceivers to this one active antenna structure to enable simultaneous transmission or reception on different bands. This distinction is central to the claims of '358 (e.g., claim 14: "matching said at least one multiband antenna to said at least one multiband transmitter...in a plurality of different bands simultaneously"). This reference likely does not anticipate the claims for this reason.

5. Other Cited References

• US 3,381,222 A and US 3,689,928 A: These are early examples of tunable antennas. They teach the basic concept of tuning but lack the context of modern wireless devices with multiple simultaneous standards (like cellular, Wi-Fi, Bluetooth) and do not disclose the specific architecture of a plurality of transceivers using a single tunable antenna simultaneously.
• US 6,140,966 A (Nokia): This patent describes a dual-band antenna using a passive "double resonance" structure. It does not teach active or electronically controlled tuning to allow a plurality of transceivers to use the structure simultaneously, which is a key limitation of the claims of '358.
• US 8,456,366 B2 (Sony): This patent was filed on April 26, 2010, and claims priority to an application filed in 2009. As the critical priority date for US 8,593,358 is August 14, 2008, US 8,456,366 B2 is not prior art to this patent and cannot be used for an anticipation analysis.

Conclusion on Prior Art

While several cited references disclose elements of the claims, such as multi-band antennas or actively tuned antennas, none appear to explicitly disclose the complete combination required by the independent claims of US 8,593,358. The novel and non-obvious step claimed in '358 seems to be the specific architecture where a plurality of distinct transceivers are coupled to one single, electronically tunable antenna structure for simultaneous operation across their respective different frequency bands. The analyzed prior art generally teaches either passive multi-band antennas or tunable antennas used by a single transceiver, often for sequential band switching or single-band optimization.